JP2003147706A - Constructing method for block pavement of heavy-grade territory - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a constructing method for a block pavement capable of efficiently constructing the block pavement stable even in heavy-grade territory, and a block pavement structure of the heavy-grade territory constructed by the constructing method. SOLUTION: In the constructing method for the block pavement in the heavy- grade territory, a pavement block is fixed on a foundation. It is characterized by that it includes a process of at least filling a filling material in a joint space part existing in a predetermined area in a gradient direction downstream side from a grout injection predetermined position before injecting grout, and/or a process of bringing side faces of sides parallel with a gradient direction of adjacent pavement blocks closely together when arranging a plurality of the pavement blocks and arranging the plurality of pavement blocks so that no joint space part is formed in a direction parallel with the gradient direction. The block pavement structure of the heavy-grade territory is constructed by such constructing method for the block pavement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing block pavement in a slope section, and more specifically, it spreads an aggregate on a foundation such as a road having a slope to form an aggregate layer, and the aggregate layer is formed on the upper surface thereof. After arranging a plurality of pavement blocks, injecting injection material such as asphalt cement mortar to fill the gaps of the aggregate layer and fix the pavement blocks integrally on the foundation Construction of block pavement It is about the method.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Unexamined Patent Publication No. 6-3068.
09, International Publication No. WO97 / 13923,
According to Japanese Patent Application Laid-Open No. 10-237804, after forming an aggregate layer serving as a support layer which also functions as a leveling layer of a pavement block on a foundation such as a road, a plurality of pavement blocks are provided with a top surface height. A method for constructing a block pavement has been proposed in which the pavement blocks are arranged in parallel and then injected with a pouring material into the space between the upper surface of the base and the lower surface of the pavement block to stabilize the pavement block.

However, if these conventional block pavement construction methods are applied as they are to sections with slopes,
Since the injection material that is liquid at the time of injection has a self-leveling property that tries to maintain a horizontal state by gravity, the injected injection material overflows from the joint space part located downstream of the injection position in the gradient direction, In the above, there may occur a phenomenon in which it does not permeate into the aggregate layer under the pavement block and flows in the joint space portion and flows downstream in the gradient direction. If such a phenomenon occurs, not only will the pavement block be contaminated by the overflowed pouring material, but a shortage of pouring material will also occur in the aggregate layer, leaving voids due to insufficient filling, thus stabilizing the paving block on the foundation. There is an inconvenience that it is not fixed.

For this reason, conventionally, when constructing a block pavement in a slope section, injection of injection material is started from the most downstream section of the slope, overflow of the injection material from the joint space does not occur, and the foundation While looking for an injection interval of the injection material that does not leave a void in the space between the pavement block and the pavement block, and yet to prevent the injection material from flowing through the joint space, the injection amount per unit time is reduced. There was no choice but to follow the procedure of injecting the injection material while keeping it, confirming the hardening of the injection material that has already been injected, and then sequentially moving the injection position of the injection material to the gradient upstream section. For this reason, when the conventional block pavement construction method is applied to the slope section, there is a problem in that work efficiency is extremely poor and a stable block pavement cannot often be constructed.

In order to solve this problem, it has been attempted to change the permeability of the injectable material by adjusting the particle size of the aggregate forming the aggregate layer between the foundation and the pavement block. However, if the particle size of the aggregate is reduced to a fine aggregate such as sand, there is a problem that it becomes difficult to fill the injection material, and it is difficult to select an appropriate aggregate particle size. Since the required permeability differs depending on the size of the gradient, the aggregate grain size must be changed according to the size of the gradient in the construction section, which is a difficult construction method in practice. It has also been attempted to adjust the gel time of the injected material to suppress the overflow from the joint space, but similar to the method of adjusting the aggregate particle size, in a construction section where the gradient gradually changes. It is necessary to prepare an injection material having a different gel time for each construction section, which is extremely difficult in practice. Therefore, conventionally,
Block pavement was considered to be an unsuitable method to apply to slope sections.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of these conventional techniques, and even when applied to a slope section, the overflow of the injection material and the joint space portion are transmitted. It is an object of the present invention to provide a block pavement construction method capable of efficiently constructing a stable block pavement even in a slope section without the flow of water, and a block pavement structure in a slope section constructed by the construction method.

[0007]

Means for Solving the Problems The inventors of the present invention have conducted extensive studies on a construction method for constructing block pavement in a slope section in order to solve the above-mentioned problems, and as a result, in constructing the block pavement in the slope section, an injection material is used. Before injecting
At least, the joint space portion existing in a predetermined region downstream from the injection material injection planned position in the gradient direction is filled with the filling material, or the side surfaces on the side along the gradient direction of the adjacent pavement blocks are mutually By placing a plurality of paving blocks in close contact with each other so as not to form a joint space portion in the direction along the gradient direction, or by using both of them together, the injection material can be injected even in a section with a gradient. Is prevented from flowing down along the joint space part or overflowing from the joint space part, and a stable block pavement where no unfilled voids remain in the aggregate layer under the pavement block,
Finding that it can be constructed easily and efficiently,
The present invention has been completed.

That is, according to the present invention, an aggregate is laid on a foundation such as a road having a slope to form an aggregate layer, and after a plurality of paving blocks are arranged on the aggregate layer. A method of constructing block pavement in a gradient section in which an injection material is injected for each construction section of a predetermined length along the gradient direction, the gap of the aggregate layer is filled and a pavement block is fixed on a foundation, A: prior to injecting an injecting material, at least a step of filling a space filling portion into a joint space portion formed between pavement blocks existing in a predetermined region downstream from the injection material injecting planned position in the gradient direction, and / Or b: When arranging a plurality of pavement blocks, the side surfaces of the adjacent pavement blocks on the side along the gradient direction should be in close contact with each other and the joint space portion should not be formed in the direction along the gradient direction. Multiple pavement blocks By providing a method for constructing a block pavement for a slope section, which comprises the step of establishing, and a block pavement structure for a slope section constructed by such a method for constructing a block pavement, Is the solution.

In the construction method of the present invention, as described above, prior to injecting the injecting material, at least the joint material is present in the joint space portion existing in the predetermined region downstream in the gradient direction from the injection material injecting planned position. As a result, the injected pouring material is prevented from flowing through the joint space portion in the gradient downstream direction without permeating into the aggregate layer below the pavement block at the pouring position, and once The injection material that has penetrated into the layer does not overflow and overflow again from the joint space portion at the downstream position in the gradient direction. The area filled with the filling material from the injection material injection planned position toward the downstream in the gradient direction depends on the size of the gradient of the construction section, but if the gradient is about 10% or less that is usually expected on roads, etc. ,
The joint space portion along the gradient direction is a region from the injection material injection planned position to the downstream of the gradient direction by 50 to 100 cm, and the joint space portion along the direction orthogonal to the gradient direction is from the injection material injection planned position. It is a region of 20 to 40 cm downstream in the gradient direction. The filling material may be filled only in the joint space portion existing in the predetermined area as described above,
It is not always necessary to fill all joint space portions existing in the construction section.

On the other hand, in the construction method of the present invention, instead of filling the joint space portion along the gradient direction with the filling material, when arranging a plurality of pavement blocks, the pavement blocks adjacent to each other are inclined in the gradient direction. It is also possible to bring the side surfaces on the side along with each other into close contact with each other and not form the joint space portion in the direction along the gradient direction. By doing so, the injected injection material is prevented from flowing in the gradient downstream direction along the joint space portion, and the injection material once permeated into the aggregate layer is prevented from flowing in the gradient direction downstream position. It is also effectively prevented from overflowing again from the joint space portion and overflowing.

It is preferable that the injection material is injected into the construction section at predetermined lengths in the gradient direction, and the construction sections divided into the predetermined lengths are sequentially processed from the downstream side to the upstream side in the gradient direction. . However, as will be described later, when the partition material is embedded in the aggregate layer, the flow of the injected material is blocked by the partition material, so in the construction section partitioned by the partition material, from the downstream side in the gradient direction. It is preferable to sequentially inject the injection material toward the upstream side, but the injection order of the injection material may be different in each construction section unit partitioned by the partition material.

It is preferable that the injection of the injection material in one construction section is performed from the joint space portion located on the most upstream side of the gradient in the construction section, preferably, the joint space portion in the direction orthogonal to the gradient direction. However, when the gradient is relatively gentle, it does not necessarily have to come from the joint space portion located on the most upstream side of the gradient in the construction section, and not necessarily from the joint space portion in the direction orthogonal to the gradient direction. Is also good. Also, in some cases, remove the pavement block near the injection position,
The joint space portion may be temporarily enlarged, the injection material may be injected from the enlarged joint space portion, and the pavement block may be returned to the original position after the injection. The gradient length of the aggregate layer that can be sufficiently filled by injecting the injection material from one joint space part depends on the physical properties of the injection material to be used and the size of the slope of the construction section. Usually expected in 1 etc.
If the gradient is 0% or less, the range is about 1 to 2 m. Therefore, in the construction method of the present invention, it is preferable that the injection of the injection material is performed for each construction section having a length of about 1 to 2 m along the gradient direction.

Further, in the construction method of the present invention, it is desirable that when forming the aggregate layer, a partition material that partitions the aggregate layer at predetermined intervals is embedded in the aggregate layer. The partitioning material may be one that linearly partitions the aggregate layer at predetermined intervals along the gradient direction, but preferably the aggregate layer is divided into a plurality of small chambers that are two-dimensionally distributed along the upper surface of the base. It is better to use a partition. By partitioning the aggregate layer into a plurality of regions by the partition material in this manner, the injected material is prevented from penetrating beyond the partition material and further permeating to the outside, and by the partition material. Since the flow of the injection material is blocked, the injection material that has been injected and is being hardened first is then injected by the pressure of the injection material that is sequentially injected from the upstream side.
It is effectively prevented that the fluid gradually flows and overflows from the joint space portion. The presence of the partition material is particularly effective in the construction section where the gradient is relatively large. The embedding interval of the partitioning material depends on the size of the gradient of the construction section, but if the gradient is about 10% or less that is usually expected on roads, it will be about 0.1 to 5 m in the gradient direction. It is preferably embedded in the aggregate layer. When using a partition material that forms a plurality of small chambers, it is desirable to embed the partition material over the entire gradient region.

In the construction method of the present invention, after the injection of the injection material, the joint material is filled in the joint space portion including the space above the filling material. Therefore, the filling material is at the top of the joint space,
It is preferable to fill the pavement block to a depth that leaves a space of about 1/8 to 1/2 of the thickness.

The block pavement constructed by the construction method of the present invention as described above is an aggregate layer, a plurality of paving blocks arranged thereon, and a hardened injection material for filling the gaps of the aggregate layer. And has a filling material in at least a part of the joint space portion, and / or has a pavement structure in which the side surface along the gradient direction of the pavement block is in close contact, In some cases, the aggregate layer further includes a partition material that partitions the aggregate layer at predetermined intervals. In the block pavement in the slope section having such a structure, the aggregate gap of the aggregate layer is sufficiently filled with the injection material, and the foundation and the pavement block are integrated, which is stable and durable. It is a block pavement in a rich slope section.

[0016] In the present invention, the foundation includes all the foundations on which an aggregate layer is laid and leveled to form an aggregate layer, and a pavement block can be arranged on the upper surface of the aggregate layer. Can include an asphalt stabilization layer, an asphalt concrete layer, an asphalt cement layer, and the like, which includes what is generally called a base layer. Further, in the present specification, “downstream in the gradient direction” refers to a lower elevation in the gradient direction, and “upstream in the gradient direction” refers to a higher elevation in the gradient direction. Also, in some cases,
In some cases, the gradient direction is not unidirectional, or the direction of the side surface of the pavement block to be placed does not necessarily match the gradient direction. In such a case, it is called "joint space along the gradient direction". Is the joint space with the largest gradient,
"The joint space part along the direction orthogonal to the gradient direction" means
It refers to the joint space with the smallest gradient.

The object of the construction method of the block pavement in the slope section and the block pavement structure in the slope section of the present invention is a sidewalk,
It is not limited to the roadway, and any other pavement where block pavement is required, such as community roads, shopping malls, bicycle paths, parks, plazas,
It also includes parking lots.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION First, materials used will be described.

<Aggregate> The aggregate to be spread on the substrate in the present invention may be aggregate having a continuous grain size or aggregate having a single grain size, and it is possible to secure continuous voids and have a normal strength. If so, the stone quality, size, etc. are not particularly limited. Crushed stone, slag, crushed stone, gravel, ascon crushed material, concrete crushed material or artificial fired aggregate, brick, tile crushed material,
Ceramic particles, emery, etc. can also be used, but preferably, No. 6 crushed stone with a particle size of 5 to 13 mm, or a particle size of 1
No. 5 crushed stone of 3 to 20 mm is used.

<Pavement Block> The pavement block used in the present invention may be any of natural stone, paving concrete, flat plate, brick, interlocking block, elastic block, tile and the like. These pavement blocks are preferably provided with air vent slits on their bottom surfaces. There is no particular restriction on the shape of the pavement block,
Square such as square or rectangle, triangle, pentagon,
Any shape that can be used as a paving block, such as a hexagon, an octagon, a geometric pattern shape, or a combination thereof, may be used, but the joint space portion formed between the paving blocks In the sense that the shape is simple and the construction direction of the present invention is relatively easy to apply, a square,
Alternatively, a quadrangle such as a rectangle is preferable.

As the natural stone, stone materials such as marble, granite, andesite and granite can be mainly used.
As the shape of the stone material, a shaped rectangular parallelepiped or cubic block or stone block, a crushed stone, a shaped stone plate, an irregular shaped stone plate, or the like is used. In addition, as the concrete pavement for pavement, a normal flat plate, a color flat plate, a wash-out flat plate, a pseudo stone plate, etc. are mainly used as the pavement concrete flat plate specified in JIS A 5304. Can also be used.

As the bricks, there are ordinary bricks, interlocking block bricks and the like, and as the ordinary bricks, those conforming to JIS R 1250 can be preferably used. As the interlocking block, one that conforms to the quality standard of the interlocking block described in "Interlocking Block Pavement" published in 1994 by the Interlocking Block Association is preferably used.

As the elastic block, it is possible to use, for example, a granular rubber mainly obtained by crushing a waste tire or the like, which is heated and compression-molded by adding a liquid urethane resin or the like as a binder. Mainly JIS
The tiles of porcelain, plaster, pottery, etc. specified in A 5209 are used. Further, an elastic tile in which viscoelasticity is added to the tile can also be used.

<Injection Material> The injection material used in the present invention can be injected from the joint space portion, penetrates into the aggregate layer, and integrally fixes the foundation and the pavement block through the aggregate layer. Any material may be used as long as it can be used, but preferably, it has excellent fluidity, has a sufficient pot life, gels within 1 hour, and has a predetermined strength within 3 hours. It is preferable to express the above, and to have a quick-hardening property that allows the constructed block pavement to be opened to traffic. Specifically, asphalt cement mortar (hereinafter, simply referred to as "AC mortar") as described below is preferable. ) Is preferred.

That is, AC mortar is a cement, an asphalt emulsion, a quick-setting admixture, a fine aggregate, a setting modifier,
A composition comprising aluminum powder, an expansive admixture, an additive and a required amount of added water. The individual components are described in detail below.

The cement used in AC mortar includes, for example, ordinary Portland cement, early strength Portland cement, super early strength Portland cement, moderate heat Portland cement, blast furnace cement, silica cement,
Examples include fly ash cement, sulfate resistant cement, ultra-rapid cement, and jet cement.

The asphalt emulsion used for AC mortar is a nonionic asphalt emulsion, which is obtained by emulsifying and dispersing asphalt in water using a nonionic emulsifier, a dispersant, a stabilizer and the like. The content of solids in the nonionic asphalt emulsion is usually 40 to 7
It is within the range of 0% by weight. Solid content of 40% by weight
If the amount is less than the above, it tends to be impossible to impart a predetermined viscoelasticity to the AC mortar, whereas if the solid content exceeds 70% by weight, the viscosity is increased to obtain a good AC mortar. Tend not to be. As the asphalt in the nonionic asphalt emulsion, one having a penetration (25 ° C.) of about 40 to 300 is preferable in consideration of the characteristics after decomposition and curing.

The asphalt emulsion used in the AC mortar may or may not contain a polymer, but the polymer-containing asphalt emulsion is preferred. The resin emulsion used for the polymer-containing asphalt emulsion includes SBR emulsion, acrylic emulsion, EVA emulsion and the like. In the present invention, a polymer-containing asphalt emulsion mainly containing an SBR emulsion is preferably used. SBR emulsions are weakly alkaline and have good mixability with cement and nonionic asphalt emulsions. The mixing ratio of the asphalt emulsion and the resin emulsion is the weight ratio,
(Asphalt emulsion): (Resin emulsion) = 99-
The range of 75: 1 to 25 is preferable, and more preferably,
(Asphalt emulsion): (Resin emulsion) = 95-
It is in the range of 75: 5 to 25. When the weight ratio of the resin emulsion is less than 1, the effect of mixing the resin emulsion is not seen, and conversely, when the weight ratio of the resin emulsion exceeds 25, the polymer-containing asphalt emulsion is thickened and good results are obtained. AC mortar cannot be obtained, and the pumping work becomes difficult.

The amount of asphalt emulsion or polymer-containing asphalt emulsion used is usually in the range of 50 to 230 parts by weight per 100 parts by weight of cement. When the amount of the asphalt emulsion or the polymer-containing asphalt emulsion used is less than 50 parts by mass, it is impossible to impart a predetermined viscoelasticity to the AC mortar. The amount of asphalt emulsion or polymer-containing asphalt emulsion used is 23
If the amount exceeds 0 parts by mass, the strength of the AC mortar decreases and the supporting force of the AC mortar packed bed decreases.

The rapid hardening admixture used in AC mortar is
Calcium aluminate and anhydrous gypsum in a weight ratio of 1:
It is a mixture obtained by mixing at a ratio of 1.4 to 2.9. This mixture imparts a rapid hardening property to the cement and an early strength development to the AC mortar. If the compounding ratio of anhydrous gypsum is less than 1.4, the rapid hardening property is weak, and if the compounding ratio of anhydrous gypsum exceeds 2.9, the rapid hardening property becomes too strong and it becomes difficult to control the pot life. The amount of rapid hardening admixture used is
Usually, it is in the range of 0 to 100 parts by mass, preferably 40 to 70 parts by mass, relative to 100 parts by mass of cement. If the amount of the rapid-hardening admixture used exceeds 100 parts by mass, the rapid-hardening property becomes too strong, and the work becomes difficult. The use of the rapid hardening admixture is not an essential condition, and may be omitted if there is no limitation on the curing time after the injection and filling of AC mortar.

The fine aggregate used for AC mortar is river sand,
Hill sand, mountain sand, screens, silica sand, etc. As for the particle size, the FM value (coarse particle ratio) is usually 1.0 to
A range of 1.6 is preferred. If the FM value is less than 1.0, the AC mortar thickens and the filling properties deteriorate, while
If the FM value exceeds 1.6, the materials are likely to be separated. Further, instead of the fine aggregate, a powdered material of a mineral substance such as fly ash or silica powder may be used. The amount of fine aggregate used is usually in the range of 60 to 330 parts by mass with respect to 100 parts by mass of cement. When the amount of fine aggregate used is less than 60 parts by mass, the volume of AC grout after curing tends to contract, whereas when the amount of fine aggregate used exceeds 330 parts by mass, material separation occurs. Work becomes difficult.

The setting regulator used in AC mortar is
Examples of polycarboxylic acids include jet setters and the like, which are useful for adjusting the pot life of AC mortar. The amount of the coagulation modifier used is usually in the range of 0 to 5 parts by mass with respect to 100 parts by mass of cement. When the amount of the coagulation modifier used exceeds 5 parts by mass, the pot life is sufficient, but early strength development cannot be expected.

The aluminum powder used in AC mortar is 0% to 100 parts by weight of cement in order to adjust the expansion coefficient.
It is used in the range of ~ 0.05 parts by mass. Usage is 0.0
If it exceeds 5 parts by mass, the AC mortar may be expanded and destroyed, which is not preferable.

The expansive admixture used for AC mortar includes lime type and CSA type. The expansive admixture is not only effective in preventing cracks due to volumetric contraction of the AC mortar injected into the aggregates and joint voids, but it also prevents the material separation of the AC mortar and provides dispersibility and watertightness. It is useful. The use amount of the expansive admixture is usually in the range of 0 to 40 parts by mass with respect to 100 parts by mass of cement. If the amount of the expansive admixture used exceeds 40 parts by mass, the AC mortar may expand and break, which is not preferable.

Additives used in AC mortar include superplasticizers and air entrainers. The fluidizing agent is for improving the workability of the AC mortar, and the air entraining agent is effective for improving the frost damage resistance of the AC mortar. The amount used is usually in the range of 1 to 5 parts by mass with respect to 100 parts by mass of cement. If the fluidizing agent is less than 1 part by mass, no effect is obtained. On the contrary, if it exceeds 5 parts by mass, the material separation and curing failure of the AC mortar are caused, which is not preferable. Also, the air entrainment agent is 1
If it is less than 5 parts by mass, no effect is obtained, and if it exceeds 5 parts by mass, curing of AC mortar is significantly hindered, which is not preferable.
Usually, an additive capable of imparting both fluidization and air entrainment is used, but each may be used alone, or both may be used in combination.

As the additive water used for AC mortar,
Generally, any fresh water can be used as long as it does not contain any harmful substances in the cement. For example, tap water, industrial water, ground water, river water, lake water, etc.

The AC mortar used in the present invention can be produced by the following preparation method. That is, first, put the required amount of asphalt emulsion in a predetermined container,
While mixing with a hand mixer, required amounts of added water, a coagulation regulator, an additive and the like are added to prepare a mixed solution.
Next, the AC mortar used in the present invention can be prepared by adding predetermined amounts of cement, a rapid-hardening admixture, fine aggregate, and aluminum powder to this mixed solution and kneading with high speed stirring. In addition, in order to improve work efficiency, it is necessary to add a mixture such as a mixture of rapid hardening admixture, fine aggregate and aluminum powder in the required amount in advance to cement, or additives in the asphalt emulsion in advance. You may use the asphalt emulsion which mixed the quantity. The prepared AC mortar is
Immediately ready for injection work.

<Packing Material> The packing material used in the present invention is particularly limited as long as it can prevent inflow of the pouring material into the joint space portion and overflow of the pouring material from the joint space portion. However, crushed stone, river sand, sea sand, mountain sand, silica sand, glass beads, screenings, slag slag, etc. can be used, but AC mortar permeates properly 6
Crushed stone No. 7 or crushed stone No. 7 is preferably used alone or in combination.

<Joint material> As the joint material to be injected and filled in the joint portion, in addition to the above AC mortar used as an injection material, a heating type injection joint material or a room temperature type injection joint material can be used. The heating type injection joint material is selected from joint products made of elastomer asphalt, elastomer resin or the like. The room temperature injection joint material is selected from elastic joint products made of polysulfide, urethane resin, epoxy resin, acrylic resin, silicone resin and the like. Also, cement milk or the like can be used.

<Partitioning Material> The partitioning material used in the present invention has flexibility so that it can be used by embedding it in the aggregate layer, has an effect of preventing permeation and passage of the injection material, and has voids. It is preferable to have a degassing property that does not leave a residue and to be integrated with an aggregate, a substrate, a pavement block or the like through an injection material. The material is not particularly limited as long as it satisfies such characteristics, and synthetic fibers (for example, polyester, polyamide, aromatic polyamide, polypropylene, polyethylene, vinylon, acryl, polyvinyl chloride, polyvinylidene chloride, polyurethane, fluororesin, etc.), Made of fibers such as inorganic fibers (eg alkali resistant glass fibers), natural organic fibers (eg hemp, cotton etc.), semi-synthetic fibers (eg rayon, acetate etc.), carbon fibers, metal fibers (eg stainless steel, steel etc.) Woven fabrics, non-woven fabrics, knitted fabrics, mesh fabrics, mats (such as felt), and thin film sheets made of these materials can be used. Also, nets and sheets made of metal wires, plastic wires, etc., foam plastic (eg, foamed polyurethane) sheets, paper sheets, plastics, rubber (eg, butadiene rubber, chloroprene rubber) films and sheets, and metals. Foil, sheet, mesh, etc. can also be used. The above materials may be used alone or in combination of two or more, but it is generally preferable to use a non-woven fabric or a woven fabric.

The partition material composed of the above materials is usually in the form of a sheet having a width wider than the layer thickness of the aggregate layer, and is cut into an appropriate length at the time of use. Embedded within. When such a sheet-shaped partition material is used, there is the complexity that the builder must determine the partition position by measuring the partition interval etc. each time, but as a partition material, a predetermined size is used. When using a partitioning material in which a plurality of small chambers are formed in a honeycomb shape, it is convenient because the operator does not have to measure the partitioning interval each time. As such a partitioning material, for example, a plurality of sheet-shaped materials may be fixed to each other at appropriate places by means such as heat fusion, sewing, welding, or adhesives, or may be engaged and expanded. It is sufficient to use a chamber in which a large number of small chambers are formed in a two-dimensional shape, which are reticulated and surrounded by side walls made of the sheet material. Such a partitioning material can be compacted by crushing the small chambers during storage or transportation so that it can be made compact by simply squeezing it into the base during use. There is an advantage that it can be done.

Next, with reference to the drawings, a method of constructing a block pavement in a slope section of the present invention and a pavement structure obtained by the method will be described.

FIG. 1 is a schematic diagram for explaining an example of a method of constructing a block pavement in a slope section of the present invention, and for convenience, shows each layer constituting the block pavement structure by cutting out at different positions. There is. In FIG. 1, reference numeral 1 denotes a base, and the base 1 has an inclination of an angle α with respect to the horizontal. In the example of FIG. 1, the base 1 is lower on the front side than on the back side. Base 1 with a slope like this
When building a block pavement on top, first of all, foundation 1
As a tack coat, for example, an asphalt emulsion (“PK-4”, manufactured by Nichireki Co., Ltd.) of 0.4 (l /
m ² ), and the tack coat layer 2 is formed. The tack coat layer is not always necessary, but it is desirable to form the tack coat layer in order to enhance the adhesiveness to the aggregate and the injectable material described later.

Next, on the tack coat layer 2, for example, crushed stone No. 6 having a particle size of 13 to 5 mm or a particle size of 20 to
A 13 mm crushed stone of No. 5 is spread and leveled to form an aggregate layer 3.
The thickness of the aggregate layer 3 is not particularly limited, but is usually 3 to 10
cm thickness is good. The formed aggregate layer 3 functions as a support layer that also serves as the leveling of the pavement block arranged thereon. On the aggregate layer 3, a plurality of pavement blocks 4a, 4b, 4c.
・ Install. In the example of FIG. 1, the paving block 4
Although a rectangular shape is used as a, 4b, 4c ..., The shape of the pavement block is not limited to a rectangular shape. Pavement blocks 4a, 4b, 4c ...
Are arranged at intervals from each other, and the pavement blocks 4a,
Joint space parts 5 _L2 , 5 _L3 , 5 _L4, ... along the gradient direction and joint space parts 5 _R1 along the direction orthogonal to the gradient direction are formed between 4b, 4c. . The joint width is not particularly limited, but is usually about 5 to 15 mm.

On the other hand, the planned injection position of the injection material is the injection material 9
Since there is an injection funnel 6 for injecting, the joint space portion 5 _R1 along the direction orthogonal to the gradient direction,
From the joint space _{5 R1,} filled between filling material 7, 7, 7, ... in a predetermined area toward the gradient direction downstream. The filling materials 7, 7, 7, ... Are not particularly limited as long as they can prevent the inflow of the injection material into the joint space portion and the overflow of the injection material from the joint space portion. As described above, river sand, sea sand, mountain sand, silica sand, glass beads, screenings, slag slag, etc. can be used. For example, when the above-mentioned AC mortar is used as an injecting material, the particle diameter is 2.5 to 13 mm. , Preferably a particle size of 2.5
It is better to use crushed stone of ~ 5 mm.

The filling thickness of the filling materials 7, 7, 7 ... Is not particularly limited as long as it can prevent the inflow of the injection material into the joint space portion and the overflow of the injection material from the joint space portion. However, it is usually 1 / 8th of the thickness of the paving block used.
It is filled so as to leave an unfilled space having a depth of about ½. For example, when a pavement block having a thickness of 8 cm is used, the filling materials 7, 7, 7, ... Have a depth of 4 to 7 cm from the upper surface of the aggregate layer 3, preferably 5 to 6 cm. It is filled to the depth, and 1 to the upper part of the filling material 7, 7, 7 ...
It is filled to leave an unfilled space of 4 cm, preferably 2-3 cm. The unfilled space is filled with a joint material as described later.

In the example of FIG. 1, only the space fillers 5 _L2 , 5 _L3 , 5 _L4, ...
7 seem to be filled, but as is clear from FIG. 2 which is a plan view of FIG. 1 viewed from above, the filling materials 7, 7, 7 ... The joint space portions 5 _R2 and 5 _R3 along the direction orthogonal to the are also filled. Joint space part 5 _L1 , 5 _L2 , 5 _L3 ... along the gradient direction
As regards a predetermined region between filling material is filled are from grout injection scheduled joint space 5 _R1, to a range of distance L, the length of this distance L is, the magnitude of the gradient of the construction period 10% usually expected on roads, etc.
If the slope of degree less, 50~100cm from joint space _{5 R1} is a grout injection scheduled position.

On the other hand, regarding the joint space portions 5 _R2 , 5 _R3, ... Which are arranged along the direction orthogonal to the gradient direction, the predetermined region filled with the filling material is the joint space portion which is the injection material injection scheduled position. 5 _R1 to the range of the distance R, and the length of the distance R depends on the size of the slope of the construction section, but if the slope is about 10% or less that is usually expected on roads, Joint space part 5 where injection material is to be injected
It is 20 to 40 cm from _R1 . Padding material 7, 7, 7
.. need only be filled in the joint space portion existing in the predetermined area in this manner, and it is not necessary to fill all joint space portions existing in the construction section, but in some cases, All joint space portions existing in the section may be filled. Further, in the examples of FIGS. 1 and 2, the distance L indicating the length of the filling region of the filling material to the joint space portions 5 _L1 , 5 _L2 , 5 _L3, ... The distance R indicating the length of the filling area of the filling material to the joint space portions 5 _R2 , 5 _R3, ... Along the direction orthogonal to is different, but the distance L and the distance R are equal to each other. Of course, it is also good. However, in general, the pressure at which the injection material overflows from the joint space portions 5 _L1 , 5 _L2 , 5 _L3 , etc. along the gradient direction is higher than the joint space portions 5 _R2 , 5 _R2 , 5 along the direction orthogonal to the gradient direction. _It is considered that the pressure is larger than the pressure at which the injection material overflows from _R3 ..., Therefore, it is preferable that the distance L is longer than the distance R.

After the filling of the filling materials 7, 7, 7, ... Is completed, the filling material is poured from the filling funnel 6. The injection device used when injecting the injection material is not limited to the injection funnel, and an injection scallop or a tremie tube may be used. The injected injection material is the joint space portions 5 _L1 , 5 _L2 , 5 _L3 ... And the joint space portion 5 _R2 .
5 _{R 3} is filled with the filling material 7, 7, 7 ..., so that it does not flow down the gradient space downstream along the joint space portion, nor overflow from the joint space portion. While permeating into the aggregate layer 3 from the joint space portion 5 _R1 and filling the voids of the aggregate layer 3 thoroughly, it flows downstream in the gradient direction and hardens, paving blocks 4a, 4b, 4c ...
Is integrally fixed to the base 1. At this time, if necessary, the pavement block 4b near the injection material injection planned position or the pavement block located above the paper surface is temporarily removed, the joint space portion _5R1 is temporarily enlarged, and injection is performed from there. The material may be injected. Needless to say, the pavement block that has been temporarily removed is returned to its original position after the injection of the injection material is completed. Such modifications are naturally within the scope of the present invention.

In order to avoid the overflow of the injection material from the joint space portion and to fill the aggregate layer 3 with no space,
It is preferable to inject the injection material into each construction section having a predetermined length. For example, in the example shown in FIG. 2, the length of the construction section filled by the injection of the injection material from one location is shown as S, and the joint space portion is separated from the injection funnel 6 by S in the downstream in the gradient direction. 5 _R6 has a separate injection funnel 6 '
Is arranged, which means that the joint space portion _5R6 is also the joint space portion for injecting the injection material. It is preferable to start the injection of the injection material from the construction section located downstream in the gradient direction, and after confirming that the injected and filled injection material has hardened to a certain degree, sequentially inject the material upstream in the gradient direction. The gradient length of the aggregate layer that can be sufficiently filled by injecting the injection material from one joint space part depends on the physical properties of the injection material to be used and the size of the slope of the construction section. In the case of a gradient of 10% or less, which is usually expected in the above, the range is about 1 to 2 m. Therefore, the length S of the construction section filled by the injection of the injection material from one place is preferably in the range of about 1 to 2 m.

In the examples of FIGS. 1 and 2, the injection of the injection material is performed from the joint space portion located on the most upstream side of the gradient in the construction section divided by the distance S as a unit. , It is not necessary to inject from the joint space portion located on the most upstream side of the gradient in the construction section, and the injecting material also flows into the aggregate layer 3 on the upstream side in the gradient direction due to the injection head pressure of the injecting material,
It is also possible to inject the injecting material from a position that is lowered to the downstream side in the gradient direction by the distance that can be filled. Further, as for the injection of the injection material, it is preferable to select the joint space portion along the direction orthogonal to the gradient direction as in the examples of FIGS. 1 and 2 above.
Depending on the case, it may be a joint space portion along the gradient direction.

After confirming the injection and the curing of the filled injection material,
The joint space is filled in the joint space including the upper space of the filling material to complete the block pavement.

FIG. 3 is a plan view for explaining another example of the method for constructing a block pavement for a gradient section according to the present invention. The same parts as those in FIGS. 1 and 2 are designated by the same reference numerals. . In the example of FIG. 3, the pavement blocks 4a, 4b, 4c ...
When placed, the pavement blocks 4a, 4b, 4c ...
No joint space portion along the gradient direction is formed between them. On the other hand, in the direction orthogonal to the gradient direction, the joint space portion 5
_R1 , 5 _R2 , 5 _R3 ... Are formed, and the joint space portions 5 _R2 , 5 _R3 are filled with the filling materials 7, 7.

[0054] In this state, when injecting the injection material from the injection funnel 6 which are arranged in the joint space 5 _R1, injected injected material is not present joint space along the gradient direction and the gradient Since the joint space parts 5 _R2 , 5 _R3 along the direction orthogonal to the direction are filled with the filling materials 7, 7, 7, ..., Without flowing down through the joint space part in the gradient direction, Also, without overflowing from the joint space portion, it permeates the aggregate layer 3 from the injection joint space portion 5 _R1 and flows into the downstream in the gradient direction while filling the voids of the aggregate layer 3 thoroughly and hardening. Pavement blocks 4a, 4b,
4c ... is integrally fixed to the base 1. The construction section is divided into predetermined distances S, and the injection material is injected and filled sequentially from the downstream side in the gradient direction. After confirming the injection and the hardening of the filled injection material, the upper space portion of the filling material is set. Filling the joint space portion including the joint material with the joint material to complete the block pavement is the same as in the example of FIGS. 1 and 2.

FIG. 4 is a schematic diagram for explaining still another example of the method for constructing the block pavement in the gradient section of the present invention, in which the front side is the gradient upstream side. The tack coat layer 2 is not shown. The difference from the construction method described so far is that a partition material for partitioning the aggregate layer 3 between the upper surface of the base 1 and the pavement blocks 4a, 4b ... In the aggregate layer 3 in a direction orthogonal to the gradient direction. 8 is embedded. (Although there is an aggregate on the front side of the partition material 8,
For convenience, not shown). The partition member 8 may be simply embedded in the aggregate layer 3 so as to prevent its movement due to the weight of the aggregate, or it may be partially embedded on the base 1 by a tack coat (not shown) or an appropriate adhesive. It may be fixed.

By embedding the partition material 8 in the aggregate layer 3 in this way, the flow of the injecting material shown by the arrow in FIG. 4 is blocked by the partition material 8 and the flow section of the injecting material is positively activated. It becomes possible to limit it. This is particularly effective in a construction section with a large gradient, in which the injection material that has been injected and hardened first gradually flows due to the pressure of the injection material that is sequentially injected from the upstream side, and overflow occurs. It is possible to prevent it from happening.

FIG. 5 shows the embedding of the partition material 8 and the filling material 7.
It is a side view which shows the example at the time of using together with the filling of. As shown in the figure, the partition member 8 is embedded in the aggregate layer 3 at a W interval. The illustrated partition member 8 is embedded so that the cross-sectional shape is S-shaped, but the cross-sectional shape of the partition member 8 is not limited to the illustrated one, and the flow of the injecting material can be blocked. If it is one, the cross sectional shape is inverted S
It may be in the shape of a letter or in a U shape rotated by 90 degrees.

It is needless to say that the embedding interval W of the partitioning material 8 depends on the size of the gradient in the construction section, and it is better to narrow it when the gradient is large and wide it when the gradient is gentle. It is usually about 0.1 to 5 m, preferably about 3 to 5 m for a gradient of about 10% or less that is expected, and for example, about 6.5% for a gradient of about 4 m.
m is preferred. If the embedding interval W is less than about 0.1 m, the number of embedding of the partition member 8 increases, which makes the work troublesome. If the burying interval W exceeds about 5 m, and if the gradient is large, there is a risk that the pressure of the injecting material injected to the upstream side in turn causes overflow on the downstream side. The partition material 8
Is normally buried along the direction orthogonal to the gradient direction, but if the direction of the joint space part and the direction orthogonal to the gradient direction do not necessarily match, it is buried in the direction along the joint space part. Alternatively, it may be appropriately buried in a portion where the flow of the injected injection material is intended to be blocked.

In the example of FIG. 5, the construction section of the distance W is equally divided by two injection sections of the length S, and in each injection section, from the vicinity of the injection joint space portion to the downstream side in the gradient direction. Filling materials 7, 7, 7, 7, ... Are filled in the joint space portion located in the area of the predetermined length. In the construction section of the distance W shown in FIG. 5, first,
The injection material 9 is injected from the injection funnel 6 ′ on the downstream side in the gradient direction, and after confirming its curing, the injection material 9 is injected from the injection funnel 6 on the upstream side in the gradient direction. In the construction section of the distance W shown in FIG. 5, the flow of the injecting material 9 filling the aggregate layer 3 is blocked by the partition material 8 on the downstream side in the gradient direction, and more than the partition material 8 on the upstream side in the gradient direction. Even if the injection material 9 is further injected to the upstream side, the flow is blocked by the partition material 8 on the upstream side in the gradient direction, so that the pressure does not reach the injection material 9 in the construction section. Therefore, the injection material 9 does not overflow from the joint space portion on the downstream side in the gradient direction. Further, as described above, in the joint space portion located in the region of the predetermined length from the vicinity of the joint space portion to be injected toward the downstream side in the gradient direction, the filling materials 7, 7, 7, 7, ...
Is filled, so that the injected pouring material 9 does not flow down through the joint space portion to the downstream side in the gradient direction or overflow from the joint space portion on the way. After confirming the curing of the injected and filled injection material 9, the filling material 7,
The joint space is filled with the joint space including the upper space of 7, 7, 7 ... to complete the block pavement.

As the partition member 8, for example, as shown in FIG. 6, a plurality of sheet-shaped partition members 8a, 8b, 8c ...
Are fixed to each other at predetermined fixing points 10, and when expanded, the plurality of small chambers 11a, 11b, 11c ... Surrounded by the side walls of the sheet-shaped partition members 8a, 8b, 8c. You may use the partition material 8 formed in. Such a partition member 8 is used for storing or transporting the small chamber 11
It becomes compact by crushing a, 11b, 11c ..., and when used, it is possible to partition the aggregate layer at predetermined intervals of vertical and horizontal lengths D _L , D _R by simply expanding it. It is extremely convenient. In FIG. 6, reference numerals 12a, 12b, 12c ... Indicate a sheet-like partitioning material 8a, 8b, 8c .. It will be described later.

The vertical and horizontal lengths D _L , D _R of the small chambers 11a, 11b, 11c, ... Are the partition members 8 for linearly dividing the aggregate layer.
Similarly, although it may be appropriately determined according to the gradient of the construction section, etc., it is usually selected from the range of 0.1 to 5 m. Vertical and horizontal length _D L, _{D R} is the aspect of length _D L, _{D R} is, 0.1 m
If it is less than the above, the construction is troublesome and not suitable. On the other hand, if the vertical and horizontal lengths D _L and D _R exceed 5 m, it becomes difficult to stop the overflow due to the pressure at the time of injecting the injection material, although it depends on the size of the gradient. The vertical and horizontal lengths D _L , D
_Rs may be the same as or different from each other, and when they are different, it is preferable that the length in the gradient direction is shorter than the length in the transverse direction of the gradient. Small chambers 11a, 11b, 11c
The shape of .. is not particularly limited, and may be any shape such as a square, a rectangle, a circle, a rhombus, and a polygon.
Further, as described above, the means for fixing the sheet-shaped partition members 8a, 8b, 8c ... At the fixing points 10 is not particularly limited, and heat fusion, sewing, welding, adhesive, engagement, etc. Appropriate means can be used. Alternatively, it may be integrally molded.

FIG. 7 is a schematic view for explaining a usage pattern of the partition member 8 in which a plurality of small chambers are two-dimensionally formed.
In the example of this figure, the width of the sheet-shaped partition members 8a, 8b, ... That compose the partition member 8 is wider than the thickness of the aggregate layer 3, and the sheet-shaped partition members 8a, 8b ,. ,
The base 1 and the pavement blocks 4a, 4 by bending
b, 4c, ...
.., 12p, 12q .. can be formed. To use this partition material 8,
First, the partition material 8 is spread on the base 1, and the lower portions of the sheet-shaped partition materials 8a, 8b ...
12b ... is formed, and the margin portions 12a, 12b ...
..Sheet-shaped partition members 8 by placing aggregates on the bases, fixing the glue margins 12a, 12b ... On the base 1 with a tack coat or an appropriate adhesive, or by using both together
A partition member 8 composed of a, 8b ... Is fixed on the base 1. Next, aggregate is spread in the small chambers 11a, 11b, 11c ... Formed by the sheet-shaped partitioning materials 8a, 8b ... And the aggregate layer 3 is formed. Subsequently, the pavement blocks 4a, 4b, 4c, ... Are arranged on the aggregate layer 3 with their upper surface heights aligned. At this time, the sheet-shaped partition member 8
The margin portions 12p and 12q on the upper portions of a and 8b may be simply bent on the aggregate layer 3, or may be paved with a tack coat or an appropriate adhesive.
It may be fixed to the lower surface of. Thereafter, filling the filling material in the joint space portion at an appropriate position and injecting the injection material is the same as the conventional construction method.

It is to be noted that, as described above, the joint space portion is filled with a filling material, and the paving blocks adjacent to each other are brought into close contact with each other when the paving blocks are arranged so that the joint space along the gradient direction is not formed. In addition, embedding a partition material in the aggregate layer may be appropriately selected according to the situation of the construction site and used alone or in combination, but as a guideline, the gradient is 5%. In the case of a relatively gentle construction section of less than, the joint space is filled with a filling material and the paving blocks adjacent to each other are closely adhered to each other when the paving blocks are arranged to form a joint space along the gradient direction. Do not do so, either alone or in combination. In the case of a relatively steep construction section with a gradient of 5% or more, the joint space is filled with a filling material. To, and / or are brought into close contact with paving blocks adjacent to each other in distribution 設時 paving blocks,
It is preferable to use both the formation of the joint space along the gradient direction and the embedding of the partition material in the aggregate layer.

The block pavement constructed as described above has an aggregate layer, a plurality of paving blocks arranged on the aggregate layer, and a hardened injecting material for filling the gaps in the aggregate layer,
At least a part of the joint space portion has a filling material and / or has a pavement structure in which the side surface of the pavement block along the gradient direction is in close contact, and in some cases, further In the aggregate layer, there is a partition member that partitions the aggregate layer between the upper surface of the base and the lower surface of the pavement block along a direction substantially orthogonal to the gradient direction. The block pavement in the slope section having such a structure is a stable and durable slope section in which the aggregate layer is sufficiently filled with the injection material and the foundation and the paving block are integrated. It is a block pavement.

In the above example, the case of using a rectangular pavement block has been described, but as the pavement block that can be used in the present invention, as described above, a square, a triangle, a pentagon, Hexagon, octagon,
Any shape that can be used as a pavement block, such as a geometric pattern shape or a combination thereof, may be used. FIG. 8 shows an example in which a hexagonal pavement block is used. In FIG. 8, two injection sections of length S are shown, and in each injection section, a predetermined length from the vicinity of the planned injection joint space where the injection funnels 6 and 6 ′ are located to the downstream in the gradient direction. Filling materials 7, 7 are filled in the joint space portion existing in the sano area. In the example of FIG. 8, 5 _L1 , 5 _L2 , 5 _L3 ... Become joint space portions along the gradient direction, and 5 _R1 , 5 _R2 , 5 _R3.
・ ・ Is the joint space along the direction orthogonal to the gradient direction.

Hereinafter, the present invention will be described in more detail by experiments and examples.

<Experiment 1> In order to simulate block pavement in a slope section, a box-shaped iron frame was prepared, and the inside of the iron frame was set to have a gradient of 5%.
A crushed stone having a particle diameter of 5 to 13 mm was spread to a thickness of about 3 cm to form an aggregate layer as a support layer also serving as leveling.
A 20x30x8 cm thick natural stone pavement block was placed on the top of the block so that the lateral direction of the block, that is, the side surface having a length of 20 cm was aligned with the gradient direction so that the joint width was 1 cm.
A joint injection space portion for injecting the injection material is determined on the upstream side of the gradient in the iron frame, and as shown in FIG. Each of the joint space portions along the direction orthogonal to the gradient direction was filled with the filling material. However, regarding the joint space portion along the gradient direction, the length of the filling area of the filling material,
That is, L is 100 cm downstream from the planned injection joint space portion in the gradient direction, and with respect to the joint space portion along the direction orthogonal to the gradient direction, the first joint in the gradient downstream direction from the injection planned joint space portion, that is, , Up to the joint space portion indicated by 5 _R2 in FIG. Since the length of the paving block used in the gradient direction is 20 cm, the length of the filling region of the filling material with respect to the joint space portion along the direction orthogonal to the gradient direction, that is, R, is 20 cm. As the filling material, crushed stone having a particle size of 5 to 10 mm was used and filled up to a depth of about 3 cm from the upper surface of the pavement block. Then, the injection material was injected from the joint space space to be injected using the injection funnel.

The composition and physical properties of the injection material (AC mortar) used are as follows. Cement: Ordinary Portland cement (manufactured by Taiheiyo Cement Co., Ltd.) 100 parts by mass Polymeric asphalt emulsion: “BF sol” (manufactured by Nichireki Co., Ltd.) 63 parts by mass Fine aggregate: Silica sand 7 83 parts by mass Rapid hardening admixture: Calcium aluminum Hydrate and anhydrous gypsum in a weight ratio of 1 part of calcium aluminate mixed with 2 parts of anhydrous gypsum 25 parts by mass Coagulation modifier: "Jet Setter" (manufactured by Taiheiyo Material Co., Ltd.) 0.1 parts by mass Additive: "Mighty 150" (manufactured by Kao Corporation) 0.5
71 parts by mass of added water Physical properties: shown in Table 1

[0069]

[Table 1]

The injected injection material does not flow down the joint space portion along the gradient direction but immediately penetrates into the aggregate layer, and overflow of the injection material is also seen from the joint space portion downstream in the gradient direction. I couldn't do it. After confirming the hardening of the injected material, the block pavement was opened and the filling state in the aggregate layer was observed, but no unfilled void was observed over the entire injection section, indicating a good filled state.

<Experiment 2> The length of the filling region of the filling material, that is, L is 70 cm with respect to the joint space portion along the gradient direction.
An injection experiment was performed under the same conditions as in Experiment 1 except that The injected injection material quickly penetrated into the aggregate layer without flowing down along the joint space portion along the gradient direction, and no overflow of the injection material was observed from the joint space portion downstream in the gradient direction. . After confirming the hardening of the injected material, the block pavement was opened and the filling state in the aggregate layer was observed, but no unfilled void was observed over the entire injection section, indicating a good filled state.

<Experiment 3> Particle size of the filling material is 2.5 to 5 mm.
An injection experiment was carried out under the same conditions as in Experiment 2 except that the crushed stone was used. The injected injection material quickly penetrated into the aggregate layer without flowing down along the joint space portion along the gradient direction, and no overflow of the injection material was observed from the joint space portion downstream in the gradient direction. . After confirming the hardening of the injected material, the block pavement was opened and the filling state in the aggregate layer was observed, but no unfilled void was observed over the entire injection section, indicating a good filled state.

<Experiment 4> The length of the filling region of the filling material with respect to the joint space portion along the gradient direction, that is, L is 70 cm.
An injection experiment was performed under the same conditions as in Experiment 3 except that The injected injection material quickly penetrated into the aggregate layer without flowing down along the joint space portion along the gradient direction, and no overflow of the injection material was observed from the joint space portion downstream in the gradient direction. . After confirming the hardening of the injected material, the block pavement was opened and the filling state in the aggregate layer was observed, but no unfilled void was observed over the entire injection section, indicating a good filled state.

<Experiment 5> An injection experiment was conducted under the same conditions as in Experiment 4, except that the filling material was dry sand. The injected injection material did not flow down along the joint space portion along the gradient direction, and no overflow of the injection material was seen from the joint space portion downstream of the gradient direction, but after confirming the curing of the injection material, When the block pavement was excavated and the filling state in the aggregate layer was observed, voids not filled with the injection material were observed in the aggregate layer. It is considered that this is because the dry sand used as the filling material penetrated into the aggregate layer and hindered the good penetration of the injection material.

<Experiment 6> An injection experiment was performed under the same conditions as in Experiment 5, except that no filling material was filled. During the injection, the injected injection material flowed down along the joint space along the gradient direction and overflowed beyond the iron frame used. After confirming the hardening of the injection material, the block pavement was opened and the filling state in the aggregate layer was observed. As a result, a large number of voids in which the injection material was not filled were observed in the aggregate layer.

<Experiment 7> An injection experiment was conducted under the same conditions as in Experiment 4, except that the joint space portion along the gradient direction was not filled with the filler. During the injection, the injected injection material flowed down along the joint space along the gradient direction and overflowed beyond the iron frame used.
After confirming the hardening of the injection material, the block pavement was opened and the filling state in the aggregate layer was observed. As a result, a large number of voids in which the injection material was not filled were observed in the aggregate layer.

<Experiment 8> Except that the gradient of the iron frame was set to 7.5% and the length of the filling region of the filling material with respect to the joint space portion along the gradient direction, that is, L was 50 cm.
An injection experiment was performed under the same conditions as in Experiment 1.
During the injection, the injected injection material oozes from the joint space portion along the direction orthogonal to the narrowed gradient direction to the joint space portion along the gradient direction, then overflows and flows downstream in the gradient direction for use. It overflowed from the bottom of the iron frame, albeit slightly. After confirming the hardening of the injection material, the block pavement was opened and the filling state in the aggregate layer was observed. As a result, some voids not filled with the injection material in the aggregate layer were observed.

<Experiment 9> The gradient of the iron frame was set to 7.5%, and R was 40 cm for the joint space portion along the direction orthogonal to the gradient direction, that is, from the planned joint space portion to the gradient downstream direction. An injection experiment was performed under the same conditions as in Experiment 3 except that the space filling material was filled up to the second joint space portion, that is, the joint space portions indicated by 5 _R2 and 5 _R3 in FIG. . The injected injection material quickly penetrated into the aggregate layer without flowing down along the joint space portion along the gradient direction, and no overflow of the injection material was observed from the joint space portion downstream in the gradient direction. . After confirming the hardening of the injected material, the block pavement was opened and the filling state in the aggregate layer was observed, but no unfilled void was observed over the entire injection section, indicating a good filled state.

<Experiment 10> The length of the filling region of the filling material, that is, L is 50 c with respect to the joint space portion along the gradient direction.
m, and at a position 200 cm downstream from the joint space where the injection material is to be injected downstream in the gradient direction, in a direction orthogonal to the gradient direction, a nonwoven fabric with a basis weight of 85 g / m ² (“spun bond”, width about 25 cm, An injection experiment was performed under the same conditions as in Experiment 9 except that one sheet (manufactured by Toyobo Co., Ltd.) was embedded so as to partition the upper surface of the iron frame and the lower surface of the pavement block into substantially vertical partitions. After confirming the hardening of the injection material, the block pavement was cut open and the filling condition in the aggregate layer was observed.The embedded non-woven fabric effectively blocked the permeation of the injection material to the downstream side of the gradient, and the embedding of the non-woven fabric was confirmed. Was confirmed to be effective in blocking the flow of the injection material.

<Experiment 11> As a partitioning material, a plurality of non-woven fabrics (“Spunbond 4081” was used instead of the non-woven fabric.
N ”, manufactured by Toyobo Co., Ltd., polyester long-fiber non-woven fabric, weight per unit area weight 85 g / m ² , width 10 cm) is fixed with an adhesive at an appropriate position, and when expanded 0.7 m × 0.7
An injection experiment was performed under the same conditions as in Experiment 10 except that a partitioning material in which a plurality of small chambers each having a square shape of m were formed two-dimensionally was used. After the partitioning material was installed, the lower part of the partitioning material was bent to form a glue margin, which was spotted on the iron frame with a quick-drying adhesive, and further the aggregate was placed and fixed so as not to move. The non-woven fabric used as the partitioning material was thin and flexible, and even when it was embedded in the aggregate layer, it was well sandwiched between the aggregates and was well blended, and was integrated with the aggregate layer.
Further, since the non-woven fabric used had air permeability and wettability, no air was formed even when the injection material was injected, and it was well compatible with the aggregate and the base, and further with the pavement block. Further, when installing the partitioning material, it was sufficient to simply expand the partitioning material and form a small chamber, and it was possible to lay it reliably and easily without having to measure the installation interval. After confirming the hardening of the injection material, open the block pavement,
Observation of the filling state in the aggregate layer confirmed that the embedded non-woven fabric effectively blocks the permeation of the injectable material to the downstream side of the gradient, and embedding the non-woven fabric is effective in blocking the flow of the injectable material. Was done. In addition, it was confirmed that the injection material was filled in every corner of the small chamber, and that filling in the transverse direction of the gradient could be performed without any problem.

<Experiment 12> An injection experiment was performed under the same conditions as in Experiment 3 except that the iron frame gradient was 7.5%. No overflow of the injected injection material was observed, but leaching of the injection material was observed in the joint space not filled with the filling material. After confirming the hardening of the injected material, the block pavement was opened and the filling state in the aggregate layer was observed, but no unfilled void was observed over the entire injection section, indicating a good filled state.

<Experiment 13> The length of the filling region of the filling material with respect to the joint space portion along the gradient direction, that is, L is 70 c.
m, and a non-woven fabric having a basis weight of 65 g / m ² at a position 200 cm downstream from the planned joint space of the pouring material in the gradient direction at a position 200 cm below the non-woven fabric (“spun bond”, One piece with a width of about 25 cm, manufactured by Toyobo Co., Ltd., and a woven cloth with a basis weight of 70 g / m ² (thickness: 0.
An injection experiment was performed under the same conditions as in Experiment 10 except that the total number of sheets was changed from 1 mm, a width of about 25 cm [nylon / polyester woven fabric], manufactured by Toyobo Co., Ltd. to 1 sheet. After confirming the hardening of the injected material, the block pavement was cut open and the filling state in the aggregate layer was observed.The embedded non-woven fabric and woven cloth effectively blocked the infiltration of the injected material to the downstream side of the gradient, It was confirmed that the embedded non-woven fabric and woven fabric are effective for blocking the flow of the injecting material.

<Experiment 14> As a partitioning material, a plurality of non-woven fabrics (“Spunbond 4061”) were used instead of two non-woven fabrics.
N ”, manufactured by Toyobo Co., Ltd., polyester long-fiber non-woven fabric, weight of 65 g / m ² , width of 10 cm) is heat-sealed at an appropriate location, and when expanded, it is a substantially rectangular small chamber of 1.0 m × 0.7 m. An injection experiment was conducted under the same conditions as in Experiment 13, except that a plurality of partitioning materials formed in a two-dimensional shape were used. After the partition material was installed, the lower part of the partition material was bent to form a glue margin, and the aggregate was placed and fixed so as not to move. The non-woven fabric used as the partitioning material was thin and flexible, and even when it was embedded in the aggregate layer, it was well sandwiched between the aggregates and was well blended, and was integrated with the aggregate layer. Further, since the non-woven fabric used had air permeability and wettability, no air was formed even when the injection material was injected, and it was well compatible with the aggregate and the base, and further with the pavement block. Also, when installing the partition material, simply expand the partition material,
It was sufficient to form a small chamber, and there was no need to measure the installation interval, and it was possible to lay it reliably and easily. After confirming the hardening of the injection material, the block pavement was cut open and the filling condition in the aggregate layer was observed.The embedded non-woven fabric effectively blocked the permeation of the injection material to the downstream side of the gradient, and the embedding of the non-woven fabric was confirmed. Was confirmed to be effective in blocking the flow of the injection material. In addition, it was confirmed that the injection material was filled in every corner of the small chamber, and that filling in the transverse direction of the gradient could be performed without any problem.

<Experiment 15> An injecting experiment was conducted under the same conditions as in Experiment 5, except that the filling material was replaced by dry sand and wet sand having a water content of about 3% by weight was used. The injected injection material quickly penetrated into the aggregate layer without flowing down along the joint space portion along the gradient direction, and no overflow of the injection material was observed from the joint space portion downstream in the gradient direction. . After confirming the hardening of the injected material, the block pavement was opened and the filling state in the aggregate layer was observed, but no unfilled void was observed over the entire injection section, indicating a good filled state.

<Experiment 16> The pavement blocks are arranged so that the side surfaces along the gradient direction are in close contact with each other, and the joint space portion along the gradient direction is not formed. Therefore, in the joint space portion along the gradient direction, Experiment 4 except that the filling material is not filled
Similarly to the above, an injection experiment was performed under the same conditions. The injected injection material quickly penetrated into the aggregate layer and did not overflow from the joint space portion downstream in the gradient direction.
After confirming the hardening of the injected material, the block pavement was opened and the filling state in the aggregate layer was observed, but no unfilled void was observed over the entire injection section, indicating a good filled state.

The results of Experiments 1 to 16 are summarized in Table 2. In Table 2, “◯” in the “Observation result” section indicates that the result was good, “Δ” indicates that it was slightly good, and “x” indicates that it was poor. Shall be represented.

[0087]

[Table 2]

From the results of Experiments 1 to 16 above, when the gradient is 5% or less, the length of the filling region of the filling material with respect to the joint space portion along the gradient direction, that is, L is 50 cm.
If the gradient is 7.5%,
L needs to be about 70 cm, and if the gradient is 10% or less, which is usually expected on roads, L is 50 to 10
It was found that about 0 cm is sufficient. Similarly, the length of the filling region of the filling material with respect to the joint space portion along the direction orthogonal to the gradient direction, that is, R, may be about 20 cm when the gradient is 5% or less, but the gradient is 7 About 40 cm is required at 0.5%, and R is 20 to 40 cm if the gradient is 10% or less that is usually expected on roads.
We obtained the knowledge that the degree is good.

<Example> The road width is about 6 m and the extension is 55 m.
Then, the construction method of the block pavement of the slope section of the present invention was applied to a substantially straight road having a cross slope of 1.5% and a longitudinal slope of 6.5%. An asphalt-stabilized layer was paved on the base layer as a base, and 0.4 l / m ² of the asphalt emulsion “PK-4” (manufactured by Nichireki Co., Ltd.) was applied as a tack coat on this layer. Particle size 5 to 1 on this
3 mm of crushed stone is spread evenly on average of 3 cm, and natural stone pavement blocks of 20 × 30 × 8 cm are sequentially arranged from the downstream in the gradient direction with joint spacing of 10 mm, and the surface height becomes a predetermined height and flat. It was arranged while ensuring the property. In this block arranging work, a nonwoven fabric having a basis weight of 80 g / cm ² (“spunbond”, manufactured by Toyobo Co., Ltd., width of about 25 cm) is transversely arranged at a distance of 4 m from the downstream in the gradient direction.
It was buried so as to partition the crushed stone layer. In addition, in order to grasp a proper embedding interval of the partition material, a part of the construction section was provided with the same non-woven fabric in sections having embedding intervals of 3 m, 5 m, and 6 m, respectively. The pavement block near the embedding position of the non-woven fabric was marked to clarify the embedding position.

The space between the joint spaces for injection was set to 1.5 m along the longitudinal direction, that is, the gradient direction, and was determined in consideration of the non-woven fabric embedding position. A crushed stone having a grain size of 2.5 to 5 mm was filled as a filling material into the joint space portion formed in a length of about 60 to 70 cm from the joint to be injected downstream in the gradient direction. After filling, excess crushed stone was removed along the joints with a broom, and the filling depth of the filling material was adjusted to be approximately 3 cm lower than the upper surface of the pavement block. After that, the injection material was injected sequentially from the downstream side to the upstream side in the gradient direction from the joints scheduled to be injected. As the injection material, the same AC mortar as used in Experiment 1 was used. ,

As a result, in the construction section where the embedding interval of the partitioning material is 4 m or less, no overflow phenomenon of the injected material is observed, and after confirming the hardening of the injected material, the block pavement is cut open and the filling state of the aggregate layer is observed. However, no unfilled void was observed and the state of filling was good. On the other hand, in the construction section where the embedding interval of the partition material is 5 m, there is a tendency of overflow phenomenon at the position where the composite gradient at the end of the road is large, and in the construction section where the embedding interval of the partition material is 6 m, the synthetic gradient is large. An overflow phenomenon was observed at the edge of the pavement. From the above, it was found that the embedding interval of the partition material is usually 3 to 5 m, preferably 4 m.

[0092]

As described above, according to the method for constructing the block pavement in the gradient section of the present invention, prior to injecting the injecting material, at least a predetermined area extending from the injection material injecting planned position toward the downstream in the gradient direction. Since the filling material is filled in the joint space part formed between the pavement blocks existing in the pavement block, the injected injection material does not penetrate into the aggregate layer under the pavement block at the injection position and travels through the joint space part. It is prevented from flowing in the downstream direction of the gradient, and the injected material once permeating the aggregate layer does not overflow and overflow from the joint space portion again at the downstream position in the gradient direction.

Further, in the method for constructing a block pavement in a gradient section of the present invention, when arranging a plurality of pavement blocks, the side faces of the adjacent pavement blocks along the gradient direction are brought into close contact with each other, and By not forming the joint space portion in the direction along the line, the injected pouring material is prevented from flowing along the joint space portion in the downstream direction of the gradient, and at the same time, once the aggregate layer is formed. It is also effectively prevented that the injection material that has penetrated into the joint overflows again from the joint space portion at the downstream position in the gradient direction and overflows.

Further, in the method for constructing a block pavement in a gradient section of the present invention, when forming the aggregate layer, a partition material for partitioning the aggregate layer between the upper surface of the base and the lower surface of the pavement block is used as the aggregate layer. By embedding in the inside, since the flow of the injection material is blocked by the partition material, the injection material that is being injected and hardened first is then sequentially injected from the gradient direction upstream side by the pressure of the injection material, Overflow is effectively prevented. Especially as a partition material
If a plurality of sheet-shaped partition materials are fixed to each other at predetermined fixing points, and when expanded, a plurality of small chambers surrounded by the side walls of the sheet-shaped partition material are formed in a two-dimensional manner By compacting the small chamber at the time of transportation or transportation, it will be compact, and when used, it will be possible to partition the aggregate layer at a predetermined vertical and horizontal length interval without measuring the partition interval by simply expanding it. The effect is obtained.

The block pavement constructed by the method for constructing the block pavement in the gradient section of the present invention as described above has an aggregate layer, a plurality of paving blocks arranged thereon,
Hardened injection material filling the aggregate layer gap, at least a part of the joint space has a filling material, and / or the side surface of the pavement block on the side along the gradient direction is in close contact. In some cases, a partition material for partitioning the aggregate layer between the upper surface of the base and the lower surface of the pavement block is further provided in the aggregate layer. The block pavement in the slope section having such a structure is a stable and durable slope section in which the aggregate layer is sufficiently filled with the injection material and the foundation and the paving block are integrated. It is a block pavement structure.

According to the present invention, the block pavement structure in the stable and durable slope section as described above is
It is possible to construct easily and efficiently.

[Brief description of drawings]

FIG. 1 is a schematic diagram for explaining an example of a construction method of the present invention.

FIG. 2 is a plan view for explaining an example of a construction method of the present invention.

FIG. 3 is a plan view for explaining another construction method of the present invention.

FIG. 4 is a schematic diagram for explaining still another example of the construction method of the present invention.

FIG. 5 is a side view for explaining still another example of the construction method of the present invention.

FIG. 6 is a diagram for explaining an example of the partitioning material of the present invention.

FIG. 7 is a schematic diagram for explaining still another example of the construction method of the present invention.

FIG. 8 is a plan view for explaining still another construction method of the present invention.

[Explanation of symbols]

1 Base 2 Tack Coat 3 Aggregate Layers 4a, 4b ... Pavement Blocks 5 _L1 , 5 _L2 ... Joint Spaces 5 _R1 , 5 _R2 ... Along the direction perpendicular to the gradient direction Joint space 6, 6'Injection funnel 7 Filling material 8 Partitioning material 9 Injecting material 10 Fixing portions 11a, 11b ... Small chambers 12a, 12b ... Glue portion α Gradient angle R Joint space along the gradient direction Length L of a predetermined area with respect to a part Length S of a predetermined area with respect to a joint space portion along a direction orthogonal to the gradient direction Length of a construction section W filled by injection of injection material from one location W Buried distance D _L , D _R Vertical and horizontal length of small chamber

Continued front page    (72) Inventor Norio Nishizawa             3-13-1, Kyobashi, Chuo-ku, Tokyo Taisei Lo             Inside Tech Co., Ltd. (72) Inventor Takuo Tamaki             3-13-1, Kyobashi, Chuo-ku, Tokyo Taisei Lo             Inside Tech Co., Ltd. (72) Inventor Kohei Kobayashi             2-2569, 21-2 Takaragicho, Utsunomiya City, Tochigi Prefecture (72) Inventor Katsutoshi Sato             2-7-8 Satsuki, Utsunomiya City, Tochigi Prefecture (72) Inventor Takahiro Yamamoto             110 Koganei, Kokubunji-cho, Shimotsuga-gun, Tochigi             Ground 2 Nichireki Koganei Dormitory B F-term (reference) 2D051 AD07 AE01 AF01 AF02 AF04                       AF06 AF07 AF11 AG03 AG11                       AG12 AG13 AG14 AG15 AG16                       AG17 AG19 AH01

Claims (10)

[Claims] 1. An aggregate is laid on a foundation such as a road having a slope to form an aggregate layer, and a plurality of paving blocks are arranged on the aggregate layer. A method for constructing a block pavement in a gradient section in which an injection material is injected for each construction section having a predetermined length to fill the gaps in the aggregate layer to fix a pavement block on a base, wherein: a: injection material Prior to injecting the filling material, at least a step of filling the joint filler into the joint space portion formed between the pavement blocks existing in a predetermined region downstream in the gradient direction from the injection material injection planned position, and / or b: When arranging a plurality of paving blocks, a plurality of paving blocks are formed so that the side surfaces of the adjacent paving blocks along the gradient direction are in close contact with each other and the joint space portion is not formed in the direction along the gradient direction. The step of arranging Method of constructing block pavement slope segment characterized by. 2. The predetermined region from the injection material injection planned position toward the downstream in the gradient direction is an area from the injection material injection planned position to 50 to 100 cm downstream in the gradient direction with respect to the joint space portion along the gradient direction, The method for constructing a block pavement in a gradient section according to claim 1, wherein the joint space portion along the direction orthogonal to the gradient direction is a region from the injection material injection planned position to 20 to 40 cm downstream in the gradient direction. 3. The injection of injection material is about 1 along the gradient direction.
The method for constructing a block pavement in a gradient section according to claim 1 or 2, which is performed for each construction section having a length of 2 m. 4. The block pavement of a gradient section according to claim 1, 2 or 3, including a step of embedding a partition material for partitioning the aggregate layer at a predetermined interval in forming the aggregate layer in the aggregate layer. How to build. 5. The method for constructing block pavement in a gradient section according to claim 4, wherein the partition material partitions the aggregate layer into a plurality of small chambers that are two-dimensionally distributed along the upper surface of the base. 6. The method for constructing block pavement in a gradient section according to claim 4 or 5, wherein the partition material partitions the aggregate layer at intervals of at least about 0.1 to 5 m in the gradient direction. 7. The joint material is filled in the joint space portion including the upper space of the filling material after the injection of the filler material.
A method for constructing a block pavement in a gradient section according to 3, 4, 5 or 6. 8. An aggregate layer, a plurality of paving blocks arranged on the aggregate layer, and a hardened injecting material filling a gap of the aggregate layer, and at least a part of the joint space portion is packed. A block pavement structure in a graded section that has lumber and / or is closely adhered to the side surface along the graded direction of the pavement block. 9. The block pavement structure in a gradient section according to claim 8, wherein the aggregate layer has partitioning materials for partitioning the aggregate layer at predetermined intervals along the gradient direction. 10. A plurality of sheet-shaped materials are fixed or engaged with each other at appropriate places, and when expanded, a plurality of small chambers surrounded by side walls of the sheet-shaped material are two-dimensionally formed. Partition material for building block pavement.