JPH10317308A - Method for paving road with draining concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a draining road paving method which not only prevents splashes caused by vehicles but also provides a great sound insulating effect by causing surface water to be drained rapidly through a draining layer provided in a fixed thickness to pave the surface part of the road, while increasing the safety of foundation subsoil. SOLUTION: A bed-layer-consolidating concrete layer, formed by blending of aggregate, cement, and water and having a slump of 0 to 4 cm and aggregate grain sizes of 5 to 40 mm, with the inclusion of sand particles of 5 mm or less, is laid to pave the top of a foundation layer or lean concrete layer. A draining layer with a slump of 0 to 30 cm and a porosity of 15 to 30%, with pore sizes of 3 mm and more occupying 70% or more, is provided to pave the top of the bed-layer-consolidating concrete layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road pavement method using cement concrete, which can be applied to large and small roads, general roads, highway passages, and the like. Surface water does not penetrate into the stable treatment layer or below the base layer at all, and at the same time, the surface water rapidly flows through the drainage layer that is paved with a certain thickness on the surface layer of the road while maintaining the safety of the basement area group. The present invention relates to a drainage road pavement method which not only does not splash water from a vehicle but also has a large sound absorbing effect.

[0002]

2. Description of the Related Art In general, a road is one of structural layers of a road cross section due to repeated impact loads caused by heavy vehicles.
Even one layer can not be neglected to design or construct, but especially in the case of paving the road surface layer as a drainage layer as in the present application, on the safety of the foundation ground, water passing through the drainage layer will not reach the foundation ground at all. Measures to prevent penetration must be sought.

Accordingly, in the present application, an impermeable layer and a drainage layer are sequentially formed on the upper layer using cement concrete as a material, while using the existing road sectional structure layer having a base layer and a safety layer as it is. Where
Here, the drainage layer not only plays a role of quickly draining the surface water of the road due to rainfall, etc., so that there is no risk of water splashing, making vehicle operation safe and at the same time playing a role of absorbing noise. The water-impermeable layer performs a thorough water-impermeable role so that water that has passed through the drainage layer cannot penetrate into the base layer and the stable layer.

[0004] Here, the long-distance-related law prescribes various requirements relating to road pavement. The present application also satisfies the requirements of the related laws and regulations, and particularly focuses on the ease and convenience of construction. It can be said that this technology was developed. In other words, taking the case of the drainage layer in the present application as an example, the greater the number of drainage holes and the greater the size of the drainage holes, the smoother the drainage function, but the compressive strength and bending strength Is significantly less than the legally specified value and becomes vulnerable, but the present invention is intended to overcome such a mutual inversion function.

On the other hand, even if all the requirements of the law are satisfied, if it is difficult to construct, such a technique will be avoided, so that it is easy to construct or large-scale construction is possible. It can be said that the technology considered in the above is a very important technical factor. In addition, since the drainage function is an essential function in the present application, the drainage hole must not be clogged with fine-grained soil, fine particles, etc. Even if it is temporarily clogged, it has a structure that can penetrate itself without additional work. Is an important technical element that cannot be excluded.

[0006]

Therefore, the present invention, which takes into account such technical elements as described above, not only facilitates construction while increasing the compressive strength and bending strength to legally prescribed values or more, but also The mechanized construction is possible, the construction period is shortened, and at the same time, the process of forming the water permeable holes is simple, the size of the water permeable holes and the water permeable porosity are extremely large, and the water permeable through the water permeable holes is almost maintained in the initial state. It is intended to have the function of penetrating itself even if it is clogged with fine soil.

Another object of the present invention is to enhance the strength of the drainage layer, particularly the surface strength of the drainage layer, and to improve the adhesive strength between the drainage layer and the water-impermeable layer.
The problems of the prior art in relation to road pavement will be investigated. As a conventional technique to be compared with the present application, permeable concrete and drainage asphalt concrete are known. Both the application, the permeable concrete and the drainable asphalt concrete are all the same in that there are permeable holes through which water passes. However, from the viewpoint of materials used, the permeable concrete is the same as the present invention in that cement concrete mixed with aggregate is used, but the drainage asphalt concrete uses the aggregate as asphalt because the aggregate is used as asphalt. And the materials used are different from each other.

[0008] In connection with such matters, the problems of the prior art will be specifically examined. First, the case of permeable concrete is examined. 1) The permeable hole is formed so that the surface water passes through the entire thickness of the section structure layer of the road (from the surface layer to the roadbed). There is a great concern that the foundation ground will be damaged by water, and there is a drawback that roads that require absolute ground safety are unsuitable. 2) Since permeable concrete was originally developed as a pavement means for preserving groundwater, all the main efforts were focused only on the formation of permeable pores. 20% or more of the amount (13% permeable concrete contains small particles of # 4 or less up to 40%)
Even if the maximum size of a thick aggregate is increased, small particles will be distributed throughout, and the size of pores will not exceed 3 mm, so that soil and greetings etc. It is inevitable that the pores are closed due to the water, and this is pointed out as a problem in terms of the water permeability. 3) The back surface layer in contact with the vehicle is where the weakness of the strength due to the water permeation hole persists. However, if this is not reinforced by another means, there is a great concern that it will be broken by the impact load of the vehicle, Pavement has been pointed out as a problem. Next, the drainage asphalt concrete, which is a conventional technique, will be examined. 1) Drainable asphalt concrete uses asphalt as a binder for bonding aggregates. At this time, the formation of water-permeable holes depends on the ratio of the amount of aggregate and asphalt used. The amount of used is limited.

The amount of asphalt used in drainable asphalt concrete is only about 4 to 5%. 4-5%
As a binder, the amount is too small, so that the adhesive strength with the aggregate is proportionally reduced, and there is a problem that the adhesive strength with the aggregate is destroyed by the repeated load of the vehicle, which greatly impairs the stability. Become like 2) Drainable asphalt concrete uses asphalt as a binder, so in summer when the temperature rises, the surface layer of the road will melt in a softened state. Particulates will reach the asphalt and will not fall off once worn, and during this repetition, there is a great concern that the water holes will be blocked, causing problems in the drainage function. 3) At the same time, drainage Since asphalt softens as the temperature rises in the summer, asphalt softens, the vehicle's repetitive load causes the water-permeable holes to sink in the road part in the direction of travel where the wheels come in contact, forming deep grooves along the vehicle's traffic line. This causes a problem that the flatness is impaired.

[0010]

SUMMARY OF THE INVENTION The present invention, which has solved the above-mentioned drawbacks of the prior art, requires a drainage function as an essential condition so that the compressive strength, the bending strength and the like satisfy the requirements of the road-related laws and regulations. In addition, the drainage hole has no concern about blockage, but maintains the drainage rate in almost the original state by itself, is easy to construct, and not only facilitates mechanized construction, but also the foundation ground Not only is the stability assured, but also the strength of the surface drainage layer is greatly reinforced.

According to the first aspect of the present invention, in the road sectional structure layer, a) a mixture of "aggregate + cement + water" on the base layer or the lean concrete layer, and slump (Slump) = 0-4 cm And a step of laying a consolidated concrete layer for a base layer in which the size of the aggregate is 5 to 40 mm and the size of the sand is 5 mm or less, and b) "aggregate + cement + Blended with water and slump (Slu
mp) = 0 to 30 cm, the porosity ratio is 15 to 30%, and the size of the pores is 3% or more and 70% or more, and the size of the pores is 10 mm or more and at least 10%.
%, And the size range of the aggregate is set so that the maximum size of the aggregate is 40 mm, the minimum size is 5 mm or more, and the residual weight percentage is 90% or more. The method is characterized in that it is performed in a step of laying a layer on the upper part of a solidified concrete layer for a base layer.

According to the second aspect of the present invention, the drainage layer and the concrete layer around the base layer form a slump.
Is characterized in that the particle size of the aggregate is made to be 0. In the invention according to claim 3, after laying the compacted concrete layer for the base layer, watering is performed within one hour,
It is characterized by having a drainage layer laid on it.

[0013] In the invention according to the fourth aspect, after one hour has passed since the solidified concrete layer for the base layer has been laid, "water + cement + unique assimilating agent" is sprayed, and drainage is scattered thereon. Characterized by paving layers. Claim 5
The invention described above is characterized in that a water-soluble epoxy resin or a water-soluble acrylic resin is permeated into the surface layer of the drainage layer to reinforce the drainage layer.

[0014] In the invention according to claim 6, the solidification for the base layer is provided.
On the concrete layer from the center of the road to both sides
It is characterized in that the gradient is set to 2 to 7%. Contract
In the invention according to claim 7, the road cross-section structure layer
A) on top of the base layer or lean concrete layer,
Water: 80-140kg / m^Three, Cement: 250-40
0kg / m^Three, 40-5 mm aggregate: 950-1550
kg / m^Three5mm or less sand: 470-1000kg /
m^Three, Concrete water reducing agent: 2.0kg / m^ThreeThe following
Blended so that the pump (Slump) = 0-4cm,
After paving, harden so that the maximum density is 90% or more.
Forming a compacted concrete layer for the base layer; b) before
After hardening the concrete layer for the base layer in the above process,
1m on the back before drying or within about 1 hour^TwoThis
Watering to 1 kg or less; c) watering in the above step
After that, within 1 hour, 1m based on aggregate maximum unit weight ^Two
Cement: 300-450 kg / m^Two, Water: 90-14
0kg / m^Two, Concrete water reducing agent: 2.0kg / m^TwoLess than
So that the slump below is 0-3cm
After mixing and paving, the maximum density should be 95% or more.
Solidifying and forming a drainage concrete layer: and d) 1 weight of water on the surface of the drainage concrete layer in the step
Minute cement or gypsum: 1 to 0.2 weight minutes, high flow
Waving agent: 0.005% by weight or less, EVA water-soluble epoxy,
Or water-soluble acrylic type resin: 0.15% by weight or less
The mixed liquid mixed below will reach the concrete for the base layer
Sprinkle enough to ensure the strength of the drainage concrete layer, and
The method is characterized by including: a method of reinforcing durability.

In the invention according to claim 8, after the solidified concrete layer for the base layer is solidified in order to strengthen the adhesive strength between the solidified concrete layer for the base layer and the upper drainage concrete layer,
If the surface is dry or if about 1 hour has passed,
A mixture of 0.1 to 0.5 parts by weight of cement and 0.005 parts by weight or less of a high flowable admixture mixed with 1 part by weight of water is used. The method is characterized in that the method includes a step of sprinkling the mixture to 1 to 1 kg and removing surface pores remaining in the compacted concrete for the base layer.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The technical configuration of the present invention will be specifically described as follows. (A) Drainage layer The drainage layer (thickness: 3 to 15 cm), which is in charge of drainage through the water hole, closes the water hole at the same time while satisfying the requirements of the Road Management Law, especially in terms of compressive strength and bending strength. In addition to not being able to do so, it is the purpose of the present application that the permeation hole is almost maintained in the original state,
To achieve these goals, the following requirements must be satisfied at the same time. (1) Formation of pores (water-permeable pores) (2) Porosity and distribution of pores by size and size (3) Grain size composition of aggregate that satisfies (2) Is determined by the composition of the composition, but the conditions of the composition in the present application are as follows. a) Aggregates and aggregates are in the form of mutual positions that are almost touching. b) As a binder for the aggregate, the cement paste is set in a hardened state so as to cover the main surface of the aggregate. c) The pores between the aggregates are to be filled with small aggregates. d) The porosity should be about 15 to 30%. e) The size of the pores and the degree of distribution according to the size are: 3% or more occupies 70% or more of the size of at least 1%.
0% or more. Here, in order to simultaneously satisfy the conditions a) and b), the slump of the cement mortar in which “aggregate + cement + water” is blended must be zero or about 3 cm.

The item directly related to the conditions of c) d) e) is the “granule size of the aggregate”. Since the numerical values are specifically given in c) d) e), The grain size of the material is thus determined. However, even if the grain size of the aggregate is determined, the size of the aggregate can only be selected within the range that satisfies the road conditions and the values specified by the road-related laws. 40mm, the minimum dimension is 5mm,
Its range was limited.

However, the size range of the aggregate is 5 to 40 m.
Even if it is limited to m, the aggregate of 5 mm or less is inevitably produced in the process of handling the aggregate and is mixed in 5 to 40 mm, regardless of the technical configuration of the present application. 90% of residual weight percentage of 5mm or more
We set the limits so that On the other hand, since the cement mortar is in a state close to Slump = 0, it can be hardened with a roller, and can be mass-produced where a mechanized construction is possible, and the construction period can be shortened. % Or more.

In addition, the reason why the size of the pores is set to 3 mm or more and occupied 70% in d) and e) is that the pores are not closed by fine particles such as soil and dust. In particular, what is particularly important is that the pore size is 10 mm or more occupying at least 10% or more. At the moment when rainwater passes through the large pore of 10 mm or more, a vacuum is generated, This is because it plays a role of penetrating adjacent pores closed by inhalation.

By repeating such an inhalation operation, the pores are maintained almost in their original state. But,
No matter how good the compressive strength and bending strength are, the surface of the drainage layer is formed with water-permeable holes, and it is necessary to reinforce the surface because there is a concern that it will be destroyed by the impact load of the vehicle . EVA water-soluble epoxy resin or water-soluble acrylic resin and water-soluble asphalt are used as a reinforcing agent for the back layer, and if these are used and sprinkled on the surface of the drainage layer, a fine pore of 0.5 mm or less can be obtained. It penetrates all over, and the strength of the drainage layer is reinforced. The penetration of the reinforcing resin is sufficient if the surface layer of the drainage layer is about 5 mm,
It is even better if it penetrates the entire thickness of the drainage layer.

Here, an example of a method for measuring the porosity according to the size of the pores is as follows. The measurement method for measuring the porosity of 31 mm or more is to cut the site or sample with a cutter machine, draw a straight line with a pen on the cut surface, calculate the ratio of the entire length and the part where the line was drawn. The indirect porosity (A) was measured and the pores having a diameter of 3 mm or more were measured and measured in the portion (pores) not drawn.
The above indirect porosity (B) is calculated. A (indirect porosity): [(overall length−length of line drawn portion / overall length) × 100 B (indirect porosity of diameter 3 mm or more): [length of pores 3 mm or more in diameter Sa / (total length-length of line drawn)] x 100 (B) Water-impermeable layer (consolidated concrete layer for base layer) Paving so that water that has passed through the drainage layer does not penetrate into the foundation ground In the present application, the impermeable layer to be used is a compacted concrete layer for the base layer of the road section structure layer, which greatly contributes to the safety of the foundation ground.

Compacted concrete layer for base layer (having a thickness of 5 to 2
5cm) a) Slump value is 0-4cm
B) The compressive strength and the bending strength should select the particle size of the aggregate that can simultaneously satisfy the conditions that satisfy the legally required values. Of 5 to 40 mm in size and 5 mm or less of small particle sand.

After pavement, the compaction rate was 90% or more. Here, since the slump (Slump) value is 0 to 4 cm, not only can the drainage pavement be laid immediately after hardening, but also the roller can be hardened, the mechanized construction is easy, and small particles can be formed. It is contained, has a dense structure, and is comparable to an impermeable layer. In addition, if the transverse gradient of the consolidated concrete layer for the base layer is given to about 2 to 7%, not only the drainage from the drainage layer is quickly performed, but also
There is an advantage that the vacuum state can be instantaneously increased by rapid drainage. (C) Reinforcement construction of the concrete layer for the base layer and the drainage layer After the solidification of the concrete layer for the base layer, the drainage layer can be immediately paved, and the construction is very quick. But,
After solidifying the solidified concrete layer for the base layer, water is sprinkled to such an extent that the surface of the solidified concrete layer for the base layer is slightly muddy, and a drainage layer is constructed.

The reason why the settlement power is increased is that both the solidified concrete layer for the base layer and the drainage layer have slump (S
This is because the cement paste is blended so that (lump) is close to 0, so that the two layers become integrated while the instantaneous hydration action of the cement paste containing water becomes vigorous. On the other hand, after about 1 hour after the hardened concrete layer for the base layer is hardened, the surface becomes dry. However, at this time, if only water is sprinkled, the effect cannot be obtained as the previous effect. +
High flowable agent (high degree fluid)
If the ng agent) layer is provided, the settlement force between the layers can be reinforced.

At this time, in mixing "water + cement", water is minimized in order to enhance the strength of the settlement force between the layers. However, if such a small amount of water is used, "water + cement" is obtained. Not only is it not easy to spread on the compacted concrete layer for the base layer, but it is not dispersed all over, so it solidifies in some places, so that the woven fabric is easy and can be spread all over the cement with "water + cement" The reason for this is that a high flowable wetting agent having a large dispersing effect is used.

In addition, it can be said that the cement paste is inserted into the drainage hole of the drainage layer to cause an anchoring action in the above-mentioned case or one of the reasons for reinforcing the setting force. Based on the above-described main configuration, the mixing ratio of the concrete layer for the base layer and the drainage layer and the construction process will be as follows, as specific numerical examples. (1) Mixing ratio of compacted concrete for base layer and paving process The compounding ratio of the compacted concrete for base layer of the present invention is water:
80~140kg / m ^3, cement: 250~400k
g / m ^3, 40~5mm aggregate of: 950~1,550k
g, small particle sand of 5 mm or less: 470 to 1,0
00 kg / m ³ and concrete water reducing agent: 2.0 k
g / m ³ or less, and the slump of this mixed water is 0 to 4 c.
m.

In general, curing concrete is about 30
Compared to the case where it takes about a day, the hardened concrete of the above composition has a slump of 0 to 4 cm, so after hardening, it can be immediately permeable to a permeable pavement and cured. No extra time is required, and the construction period can be greatly reduced. After paving the compacted concrete for the base layer of the above mixed material, it is compacted with a roller or the like so that the compacting rate is 90% or more, and the compacted thickness is 5 to 25 cm. The compressive strength and flexural strength required for the compacted concrete for the base layer are 180 kg / m ² or more and 28 kg / m ² or more, respectively. In the compacting step for the base layer of the present invention, the compressive strength is 240 kg / m ² or more. And the bending strength 40kg /
In m ² or more, all above this reference. At this time, it is sufficient if the consolidation ratio is 90% or more, but it is more preferable if the consolidation ratio is 95% or more. (2) on the surface of the base layer for the firm concrete layer and the drainage layer of Truth force reinforcement construction for the base layer hardened concrete layer, in a case where there remains considerable still moisture (within 60 minutes after the firm roughly), 1m ² per on its surface Sprinkle water to 1 kg or less, and when the surface is almost dry (when it has passed 60 minutes after roughening), 0.1 to 0.5 weight of cement is added to 1 weight of water, A solidified concrete layer for a base layer is formed by dispersing a mixed liquid containing not more than 0.005 parts by weight so as to be 0.1 to 1 kg per 1 m ² and actively inducing the hydration action of an unmixed cement paste. And the drainage layer will be strengthened. (3) Mixing ratio of drainage concrete layer and pavement process After watering on the surface of the solidified concrete layer for the base layer, about 60
Within minutes, a drainage concrete layer is laid on top of it.
1m ^{3 based} on aggregate maximum unit weight, cement: 300
４５０450 kg / m ³ , unit water volume: 90-140 kg /
m ³ , and concrete water reducing agent: 2.0 kg / m ³ or less,
Inorganic pigment for coloring: 10% or less of cement weight, water-soluble acrylic resin as mixing polymer, EV
A, at least one of water-soluble epoxy, SBR latex, and oiled asphalt: mix 20% or less of cement usage fee, make slump 0-5cm, and after laying it, maximum density Harden to 90% or more, preferably 96% or more, so that the thickness is 3 cm to 15 cm.

In general, the compressive strength and the bending strength required for a concrete layer for roads are each 180 kg.
/ M ² or more and 28 kg / m ² or more. In the present invention, the compressive strength and the bending strength of the drainable concrete layer are approximately 240 kg / m ³ or more and the bending strength of 40.
Above kg / m ² all exceed this standard. In this step, The reason for limiting the cement usage 300~450kg / m ³ in the case of 450 kg / m ³ or more, when compacting with a roller, occurs sponge phenomenon, 300 kg / m
^In the case of ³ or less, the compressive strength is 18 in the appropriate porosity state.
This is because it becomes less than 0 kg / m ³ and cannot serve as a road pavement material.

At this time, the aggregate used is such that the aggregate on the surface when the vehicle is running can be prevented from being damaged.
The absolute dry specific gravity is 2.50 or more, the abrasion rate according to the Los Angeles abrasion test method is 30% or less, and the maximum particle size of the aggregate is 40 mm or less. An aggregate having a porosity of 35% or more and 55% or less is used.

When the porosity of the aggregate is limited to 35 to 55% based on the stuffing (bar) compaction test standard for the padding, if the porosity of the aggregate is 35% or less, after the polymer is scattered, the drainage property is reduced. In the concrete, when the porosity is 15% or less and the water permeability is 10-1 cm / sec or less, and when the porosity of the aggregate is 55% or more, despite the use of many cements, This is because not only the strength of the drainage concrete is weak, but also the pavement becomes difficult due to the occurrence of the sponge due to the excessive use of cement.

In this process, the reason why the aggregate having a wear rate of less than 30% in the Los Angeles abrasion test is limited is that when the aggregate having a wear rate of 30% or more is used, the friction with the wheel and the road surface are reduced. This is because the aggregate easily collapses, which further reduces the water permeability and may result in shortening the life of the road. (4) Reinforcing process for improving strength and durability of drainage concrete layer To prevent corrosion of pores in drainage concrete layer and improve strength and durability, cement or gypsum is added to one weight of water: 1
0.2 wt.%, High flowable humectant: 0.005 wt.% Or less,
Inorganic pigment: 0.005 to 0.05 parts by weight, EVA water-soluble epoxy or water-soluble acrylic resin:
A mixed solution of 0.15 wt.% Or less and methanol: 1 wt.% Or less is sufficiently spread on the surface of the drainage concrete layer so that the mixed solution reaches the solidified concrete layer for the base layer. Desirably, the porosity of the drainage concrete ranges from about 18% before spraying the mixed solution to about 1% after spraying.
It is better to make it 5%. After this mixed spraying, a curing cloth such as vinyl is covered for about one day or more to prevent evaporation of water and cure. It is desirable to spray this mixed liquid within 3 hours after solidifying the drainage concrete layer, or after 1 day or more, because the solidification starts 3 hours after solidifying. The reason for working on the pavement surface is that the durability of the drainage concrete may be reduced, and that the work is performed from the upper part of the drainage concrete since the first curing is performed after one day.

On the other hand, as a reinforcement treatment for improving the strength and durability of the drainage concrete layer, instead of spraying the mixed solution, a state before the surface is dried after the drainage concrete layer is solidified. Sprinkle water on the surface of the drainage concrete layer with a powerful spray to wash out the cement paste adhering to the surface of the aggregate, soak the washed paste between the gaps, and increase the adhesive strength between the pores. There are ways to increase it. However, when drainage concrete and layers are reinforced by this method, the surface aggregate protrudes, which has the advantage of making use of the natural beauty.However, the surface aggregate can be detached or crushed. Because of the disadvantage of high performance, this method is preferably applied to a road or a square where only small vehicles pass, rather than a road where large vehicles frequently pass. Hereinafter, the present invention will be described based on examples.

[0033]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A base layer, an auxiliary base layer, and lean concrete, which have been formed in a usual manner, are 50 m in length and 9 in width.
For a road with a width of 3 m on both sides of a road shoulder, the base layer was formed as concrete, and drainage concrete was laid on it. At this time, 20 cm of hardened concrete for the base layer was laid, 10 cm of drainage concrete was laid on the top, 5 cm of the edge (road shoulder) was laid with ordinary concrete, and 10 cm of drainage concrete was laid.
It will be paved, the color will be light green, and a perforated pipe will be installed on the side of the boundary stone. The following equipment and materials were prepared for this example. (Equipment = 2 finishers for asphalt concrete paving (width 4.5cm), 1 tandem roller 6-8ton 1 tire roller 10-12ton1
, 1 Remicon Plant, Dump tr
uck 1 unit, other asphalt concrete paving equipment). The following steps were carried out using the above materials. FIG. 5 shows the mixing ratio of the compacted concrete for the base layer and the drainage permeable concrete used in this case.

Step I: A mold is placed on top of the formed or paved auxiliary base layer, base layer, and phosphorus concrete (to be 30 cm or more) according to a usual method, and the concrete around the base layer is finished with a finisher. Using a tandem roller while paving from one side so that the cross slope becomes 3% and the thickness of the pavement becomes 20cm in consideration of the compaction rate. Hardened to 96% or more of the optimum density.

Second step: At least 60 minutes after hardening, 1 part by weight of water is mixed with 0.3 part by weight of concrete and 0.003 part by weight of a specific assimilating agent.
The powder was sprayed on the surface of the compacted concrete for base layer so as to be 0.3 kg per unit, and pores on the surface remaining in the compacted concrete for base layer were removed. Third step: Immediately after the removal of the mixed liquid in the previous step, drainage concrete is laid with a finisher for asphalt laying, and tandem rollers and tire rollers are consolidated so that the maximum compaction density becomes 96% or more. Was.

Fourth step: as a strength and durability reinforcing agent
And 1 weight of water and 0.2 weight of cement
0.002% by weight, 0.02% by weight of green pigment, and water-soluble
Make a mixture of 0.2 parts by weight
1m on the surface of water-based concrete ^Two4.2kg per
Spread the mixture until the mixed concrete layer
After having been absorbed, apply about 1
Over a period of days, the mixture will solidify without water evaporation
did. Before this mixture is sprayed, it is more than 18%
Drainage concrete porosity is about 15% after spraying
Became.

Fifth step: According to the usual method, the culture was sprinkled several times, and after 2 days or more, the eyes of a rope and a rope were placed and hardened sufficiently for 28 days or more, and the vehicle was opened. The rim of the side face (road shoulder) was also paved in the order of the first step, the second step, the third step, the fourth step, and the fifth step. After the completion of the passage construction according to the above-described example, tests were performed on the porosity, compressive strength, water permeability, compaction rate, adhesive strength, and the like. FIG. 6 shows the result.

As shown in FIG. 6, the embodiment according to the present invention has excellent strength and water permeability, and has a strong adhesion between the compacted concrete layer and the drainage concrete layer, and has excellent durability. Things. And, in the present invention, there is no need to delay the work period for compacting after laying the compacted concrete, so that it is possible to shorten the construction period and save the construction cost.

[0039]

According to the present invention, not only the construction is easy but also the mechanized construction is possible while the compressive strength and the bending strength are maintained more than the specified values of the Road Related Law, and the construction period is shortened. The process of forming the water-permeable holes is simple, the size of the water-permeable holes and the water-porosity are extremely large, and the water-permeability through the water-permeable holes can be kept almost in the initial state, even if it is temporarily clogged with fine-grained soil. , Can perform the function of passing through itself, the surface strength of the drainage layer is large, the durability against the impact load of the vehicle is large, the drainage layer and the concrete layer for the base layer are integrally bonded, and the sound absorbing effect This is a very useful pavement method because the safety of the ground is large.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating the concept of general permeable pavement.

FIG. 2 is a cross-sectional view illustrating the concept of drainage concrete pavement.

FIG. 3 is a cross-sectional view of a general highway constructed by a normal method.

FIG. 4 is a cross-sectional view of a drainable pavement depicted in accordance with the present invention.

FIG. 5 is a diagram showing the mixing ratio of compacted concrete and drainage concrete used in the present example.

[Fig. 6] Concrete for base layer, drainage concrete,
It is a figure which shows a standard expected value and a test method.

Claims (8)

[Claims] 1. In a road cross-section structure layer, a) Slump is mixed with "aggregate + cement + water" on a base layer or a lean concrete layer.
４4 cm, and the particle size of the aggregate is 5
Paving a compacted concrete layer for a base layer that is 〜40 mm and contains small particles of 5 mm or less; b) Slump (Slu) mixed with “aggregate + cement + water”
mp) = 0 to 30 cm, the porosity ratio is 15 to 30%, and the size of the pores is 3% or more and 70% or more, and the size of the pores is 10 mm or more and at least 10%.
% Of the aggregate, and at the same time, the size range of the aggregate is such that the maximum size of the aggregate is 40 mm, the minimum size is 5 mm or more, and the residual weight percentage is 90% or more. A drainable concrete pavement method, which is performed in a step of laying a layer on a solid concrete layer for a base layer. 2. The drainable concrete pavement method according to claim 1, wherein the drainage layer and the concrete layer surrounding the base layer are formed by setting the grain size of the aggregate so that the slump is zero. . 3. After laying a hardened concrete layer for a base layer,
3. The drainable concrete paving method according to claim 1, wherein water is sprinkled within one hour, and a drainage layer is laid thereon. 4. After laying a hardened concrete layer for a base layer,
3. The drainable concrete pavement method according to claim 1, wherein after one hour, "water + cement + unique assimilating agent" is sprayed and a drainage layer is laid thereon. . 5. The drainage concrete paving method according to claim 1, wherein the drainage layer is reinforced by infiltrating a water-soluble epoxy resin or a water-soluble acrylic resin into the surface layer of the drainage layer. 6. The drainable concrete pavement method according to claim 1, wherein the solid concrete layer for the base layer has a transverse gradient of 2 to 7% from the center of the road toward both sides. 7. The road section structure layer, comprising: a) water: 8 on the base layer or the lean concrete layer;
0 to 140 kg / m ³ , cement: 250 to 400 kg
/ M ³ , aggregate of 40-5 mm: 950-1550 kg /
m ^3, 5 mm or less sand: 470~l000kg / m ^3, the concrete water reducing agent: 2.0 kg / m ³ were blended as follows becomes slump (Slump) = 0~4cm the after paving, the maximum density of 90 % To form a base concrete layer; and b) solidifying the base concrete layer in the above step.
Before the surface dries, or within about an hour,
a step of watering the m ² per 1kg or less; after watering of c) the step, within about 1 hour, the maximum unit volume weight 1 m ² Cement Aggregate: 300~450kg /
m ² , water: 90-140 kg / m ² , concrete water reducing agent: 2.0 kg / m ² or less, Slump =
A step of forming a drainage concrete layer by mixing the mixture so as to have a maximum density of 95% or more after paving, and forming a drainage concrete layer: and d) 1 weight of water on the surface of the drainage concrete layer in the above step. Min. Cement or gypsum: 1 to 0.2 wt.%, High fluidizing agent: 0.005 wt.% Or less, EVA water-soluble epoxy,
Or a water-soluble acrylic type resin: a method of mixing a mixture of not more than 0.15% by weight and sufficiently dispersing the mixed liquid to the solidified base layer concrete to reinforce the strength and durability of the drainage concrete layer is included. A drainage concrete pavement method characterized by the following. 8. When the surface of the solidified concrete layer for the base layer is dried after the solidified concrete layer for the base layer is solidified to enhance the adhesive strength between the solidified concrete layer for the base layer and the upper drainage concrete layer, or
If the time has passed, cement 0.1 to 1 weight of water
A mixture obtained by mixing 0.5% by weight and 0.005% by weight or less of the high flowable wetting agent has a surface of 0.1% / m2. l to lkg
The drainable concrete pavement method according to claim 7, further comprising a step of dispersing the concrete so as to obtain the surface pores remaining in the compacted concrete for the base layer.