JP3475071B2 - Partially drainable road pavement structure and its construction method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partially drainable road pavement structure and a method for constructing the same. It relates to a road pavement structure and its construction method.

[0002]

2. Description of the Related Art In a snowfall area, snow is removed from the central part of a road by a snow remover, but snow removed by a snow remover accumulates at the end of the road. When snow is melted, the snow melt may flood the road surface or overflow the road and flow into houses along the road, resulting in unexpected damage. In addition, even if it is not a snowfall area, if the road side end is dented due to uneven subsidence, it is easy to cause rainwater etc. to accumulate, which may cause water splashing, freezing at night, etc. Or even cause an accident.

Conventionally, countermeasures against such a problem have not been sufficiently taken, and the residents along the road are able to eliminate the snow accumulated on the end of the road by draining it into a drainage groove nearby. However, no effective measures have been taken against rainwater accumulated on the road side edge.

On the other hand, in recent years, a drainage pavement in which rainwater is permeated from the pavement surface into the interior and drained,
This is because the pavement is constructed using a mixture with a high porosity, and rainwater is allowed to permeate into the gaps of the aggregate that forms the pavement for drainage, so the binding force between the aggregates is weak and the snowfall area As such, the pavement could not be used on roads where vehicles equipped with chains pass through in the winter. In addition, since a water-impermeable layer is provided on the base layer, and a water-permeable surface layer is provided on it, the work process is complicated and it is generally constructed over the entire crossing direction of the road. There was a problem that it was costly.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the prior art, and it is possible to remove snowmelt water from snow accumulated on the side of a road in a snowfall area or accumulated rainwater. It is an object of the present invention to provide a pavement structure that can be effectively drained, has strength and durability, and can be constructed at low cost by a simple operation, and a method for constructing the pavement structure.

[0006]

As a result of repeated studies to solve the above-mentioned problems, the inventors of the present invention have found that snow removed by a snow blower or the like accumulates rainwater or the like exclusively on roads. Focusing on the side edge, the drainage pavement structure is used only on the road side edge to share the function of draining snowmelt water, rainwater, etc. The present invention was completed by finding that the above problems can be solved by leaving the pavement as it is.

That is, the present invention provides a partial drainage road pavement structure in which a drainage pavement structure constructed by using a mixture for room temperature pavement is provided at an end of a road side adjacent to another existing or new pavement structure. A method of constructing a partially drainage road pavement structure in which a room temperature pavement mixture is laid at the road side edge adjacent to another existing or new existing pavement structure and a drainage pavement structure is constructed at the road side edge. The above problem is solved by providing the following.

In the partially drainage road pavement structure of the present invention, the central part of the road through which the vehicle runs is an existing or new pavement structure. Other pavement structures refer to pavement structures other than drainage pavement structures constructed using a room temperature pavement mixture, and are usually dense-grain type pavement structures constructed using a heated mixture. While such a dense-grained pavement structure has sufficient strength to withstand the passage of vehicles, it does not allow the penetration of snowmelt water or rainwater and does not have a drainage function. On the other hand, the drainage pavement structure constructed using a mixture for room temperature paving has the function of permeating and discharging snowmelt water, rainwater, etc., and the end of the road side where snow removed by a snowplow etc. accumulates is used for room temperature paving. By using a drainage pavement structure constructed using a mixture, it is possible to sufficiently cope with the concentration of snowmelt water, etc., and for the entire road, a partially drainage road pavement structure that has both sufficient strength and drainage performance It is possible to build. As described above, the idea of dividing a road in the longitudinal direction and assigning different functions to the respective parts does not exist so far, and the present invention is novel at least in this respect.

When constructing a drainage pavement structure at the end of the road side, a part of the existing pavement where rainwater etc. was likely to stay due to uneven settlement etc. was partially deleted for the purpose of repair and deleted. The drainage pavement structure may be constructed by laying a mixture for room temperature pavement on this part, or when building a new road pavement, the mixture for room temperature pavement is laid at the end of the road to form a drainage pavement. It may be done. In addition, when the road side end has a large dent, it is possible to construct a drainage pavement structure by laying a room temperature pavement mixture in the dent without cutting off the road side end of the existing pavement.

In the present invention, the drainage pavement structure constructed at the road side end is usually constructed as a single layer constituting the surface layer of the pavement. By doing so, even when a part of the existing pavement is deleted and the room temperature pavement mixture is to be laid in that part, or when a new road pavement is to be constructed, the work is simple. And, it becomes possible to construct the partially drainage pavement structure easily.

Further, it is desirable to incorporate a water conduit pipe in the portion of the drainage pavement structure in the present invention. By laying a water conduit pipe, it becomes possible to efficiently collect the drainage from the drainage pavement structure and discharge it to the catchment basin. It goes without saying that the drainage pavement structure portion of the present invention and the water collecting basin are appropriately connected by a drainage hole.

The present invention is characterized in that a drainage pavement is constructed using a mixture for cold pavement. The mixture for room temperature pavement is mainly produced by mixing aggregate and hydraulic inorganic material, and further asphalt emulsion as required, and can be constructed at room temperature, so that CO ₂ is generated by heating the material. It is an excellent pavement material that does not only have good workability but also has little impact on the global environment.

The present invention also fills and integrates the joint between the drainage pavement structure and another existing or new pavement structure with a mixture containing fine aggregate, asphalt emulsion and hydraulic inorganic material. Thus, the drainage pavement structure and other existing or new pavement structure are firmly adhered and integrated. Because a step is likely to occur at the joint between the drainage pavement structure constructed using the room temperature pavement mixture and another existing or new pavement structure, and the density and slip resistance become discontinuous at the joint. The joint portion is a portion that is easily damaged by the passage of the vehicle. In the present invention, a fine aggregate, an asphalt emulsion, and a mixture containing a hydraulic inorganic material are poured into the joint portion or the peripheral portion thereof, and at least the void portion of the drainage pavement structure is filled with the existing or new pavement. The joint is reinforced by being integrated with the structure. By doing so, it becomes possible to impart sufficient durability to the partially drainage road pavement structure.

In the present specification, the road side end means a side end of a road on which a vehicle generally does not pass, and in the case of a road where there is no distinction between a sidewalk and a road, the road shoulder or its vicinity is used. , For roads with distinction between sidewalks and roadways, use the side strip of the roadway adjacent to the sidewalk or its vicinity, and, for roads with a median strip, the side strip adjacent to the median strip. Alternatively, it indicates the vicinity thereof, and may include a part of the lane depending on the road. Further, the central part of the road means a part of the road other than the end part on the road side.

In the present invention, usually, the drainage pavement is constructed by using the mixture for room temperature pavement at the road side end portion within a certain distance from the road side edge, and the region where the drainage pavement is constructed is It is not always necessary to include the road side edge or the vicinity thereof, and in some cases, the drainage pavement may be constructed at a position some distance from the road side edge. Further, the present invention does not exclude a pavement structure in which a drainage pavement structure is additionally provided in a portion other than the road side end portion.

Roads to which the partially drainage road pavement structure and its construction method of the present invention are applied are not only general roads and highways but also premises roads such as factories, parking lots, plazas, airfields, port facilities, etc. Including all places where vehicles and the like are paved, and in each place, the parts where the vehicles and the like are less likely to pass correspond to the road-side end.
Further, the partially drainage road pavement structure of the present invention and the method for constructing the same are not limited to drainage of snowmelt water in a snowfall area, but rainwater or the like is infiltrated into the road surface of the road side end,
Of course, it can be applied to the case of draining.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The partially drainable road pavement structure and its construction method of the present invention will be described in detail below.

FIG. 1 is a view showing an example of a cross section of a partially drainable road pavement structure of the present invention. In FIG. 1, reference numeral 1 is a partially drainage road pavement structure of the present invention, 2 is a drainage pavement structure, 3 is a surface layer of an existing pavement, 4 is a base layer of an existing non-drainage pavement, and 5 is an existing pavement. The upper layer roadbed is shown. Reference numeral 6 is a water conduit pipe buried in the drainage pavement structure 2, 7 is a U-shaped groove, 8 is snow that has been removed by a snow blower or the like and has accumulated on the road side end, and 9 is a vehicle tire.

In the case of FIG. 1, the drainage pavement structure 2 is constructed by shaving off the road side end of the surface layer 3 of the existing pavement, and then paving the room temperature paving mixture. In the example shown in the figure, only the surface layer 3 of the existing pavement is shaved off, and the room temperature paving mixture is laid at the shaved place. However, the existing pavement to be shaved off is not limited to the surface layer 3 part. If the surface layer 3 of the existing pavement is thin, the base layer 4 is also scraped off. Conversely, if the surface layer 3 of the existing pavement is sufficiently thick, the surface layer 3 is left uncut. You can If the existing pavement is curved, the base layer 4 may be partially scraped off or the surface layer 3
There is also a case where it is partially left and scraped off. In any case, it is preferable to scrape off the existing pavement so that the drainage pavement structure constructed by the pavement mixture for cold pavement to be paved usually has a thickness that constitutes the surface layer of the pavement.
The preferable thickness of the drainage pavement structure 2 is about 3 to 10 cm. When the thickness of the drainage pavement structure 2 is less than 3 cm,
This is not to say that it cannot be implemented, but if it does not have sufficient drainage capacity, and if it exceeds 10 cm, the drainage capacity does not increase despite the increase in construction cost, which is uneconomical.

The room temperature mixture for pavement is carried into the cut-off portion, laid down and leveled, and fully paved to be paved. Prior to carrying in the room temperature paving mixture, the upper surface of the base layer 4 at a portion where the room temperature paving mixture is paved, for example U.
It is desirable to apply a tack coat to the exposed surface of the side groove such as the groove 7, or to adhere a waterproof sheet (not shown) to the upper surface of the base layer 4 with an asphalt-based solvent adhesive or the like. By doing so, water such as snowmelt water that has penetrated into the drainage pavement structure 2 does not penetrate into the base layer 4,
It is collected in the water pipe 6 and discharged to the water collecting basin. It goes without saying that the water collecting basin is provided in advance at an appropriate position in the U-shaped groove. Further, for example, as shown in FIG. 2, when the subsidence of the existing pavement is severe and the road side end is considerably recessed, the open-grain-size pavement mixture is directly paved without scraping the existing pavement. It is also possible to build a drainage pavement structure. In this case as well, it is the same as cleaning the exposed surface of the existing pavement, applying a tack coat to the exposed surface, laying a waterproof sheet, and further providing a water pipe.

The water guiding pipe 6 is formed by spirally winding a stainless steel material, glass fiber, natural fiber, synthetic fiber, artificial fiber, carbon fiber, metal fiber, metal wire or the like in a mesh or mesh shape. And a reinforced heat-resistant synthetic resin tube having a large number of holes, a tube made of a synthetic fiber such as polyester, polyamide, polypropylene, vinylon or the like or a non-woven fabric of carbon fiber can be used. The cross-sectional shape of the water guiding pipe 6 is not limited to a circle, and various forms such as a triangle, a quadrangle, and an ellipse are possible. The diameter of the water pipe 6 is 10 to 30 m
Therefore, it is needless to say that the thickness of the drainage pavement structure 2 is required to be thicker when the water conduit 6 is buried.

The position where the drainage pavement structure 2 is constructed is a road side end where snow 8 removed by a snow blower or the like is accumulated, because there are generally few vehicles passing through the drainage pavement structure. The width X from is usually in the range of 10 to 200 cm, preferably 30 to 150 cm. Width X is 10c
If it is less than m, not only sufficient drainage capacity is not obtained, but also paving work of the room temperature paving mixture becomes difficult. On the other hand, if the width X exceeds 200 cm, the drainage capacity increases, but the frequency with which the tires of the vehicle pass through increases and the construction cost increases, which is not preferable. The width X of the drainage pavement structure does not always have to be constant, and can be changed when the road width changes and the side belt width changes. In addition, in the example of FIG. 1 and FIG. 2, the drainage pavement structure is constructed in contact with the road side edge, but the construction position of the drainage pavement structure does not necessarily have to be in contact with the road side edge. You may make it provide a fixed distance from an edge. In such a case, it goes without saying that it is necessary to provide a pipeline or the like leading to the water collecting basin on the existing pavement portion that remains in contact with the road side edge. Also, in a snowfall area, when constructing a drainage pavement structure,
It is preferable to bury a snow melting device (not shown) such as an electric heating mat or a hot water pipe under the drainage pavement structure.

FIG. 3 is an enlarged view of a joint portion between the drainage pavement structure 2 and the surface layer 3 of the existing pavement in the example of FIG.
The same parts as those are denoted by the same reference numerals. A step is likely to occur at the joint between the drainage pavement structure 2 and the surface layer 3 of the existing pavement,
Further, since the density and the slip resistance are discontinuous, there is a risk that the drainage pavement structure 2 will be damaged by the passage of vehicles, and therefore, as shown in FIG.
It is desirable to pour into the joint portion and its peripheral portion and to fill the voids in the joint portion and its peripheral portion to improve the adhesion between the drainage pavement structure 2 and the existing pavement, and to integrate them. By doing so, for example, even if the corner portion 11 shown by reference numeral 11 is present in the surface layer 3 of the existing pavement, it is filled with the mortar-like mixture 10,
A strong joint can be formed. The mortar-like mixture 10 is preferably poured so as to partially cover the surface layer 3 of the existing pavement with a thickness of about 1 to 2 mm, and the filling width Y of the mortar-like mixture 10 is about 5 to 30 cm, preferably 7
~ 25 cm, and the width Z covering the surface layer 3 is 2 to 10 cm
The degree, preferably about 3 to 7 cm, is desirable for obtaining sufficient bondability. In this way, the joint between the drainage pavement structure and the non-drainage pavement structure is filled with a mortar-like mixture,
By integrating, the durability of the partially drainage road pavement structure of the present invention is further improved. After filling the joint and its periphery with the mortar-like mixture 10, if necessary,
A top coat may be performed by spraying an acrylic resin or an epoxy resin on the upper portion of the drainage pavement structure 2.

FIG. 4 shows an example of newly constructing the partially drainage road pavement structure of the present invention, and the same parts as those in FIG. 1 are designated by the same reference numerals. In FIG. 4, 12 is a center line of a road, 13 is a formwork, 14 is an anchor bolt for fixing the formwork 13, 15 is a lower roadbed, and 16 is subgrade soil. For the partially drainage road pavement structure, after constructing the base layer 4 up to the normal method, first, the center line 12
To the part of the drainage pavement structure excluding the road side end is surrounded by the formwork 13, 13, and the ordinary asphalt mixture is put into the formwork 13, 13 and spread, leveled, and rolled. Done. After rolling, after confirming that the surface layer 3 of the non-drainage pavement exhibited a predetermined strength, the formwork 13 on the road side edge side was removed, and the mixture for room temperature pavement was placed between the surface layer 3 and the road side edge. Bring in. Prior to carrying in, applying a tack coat, laying a waterproof sheet, and further laying the water conduit 6 are the same as in the case of FIG.

Next, the carried-in room temperature pavement mixture is spread and leveled and compacted to construct the drainage pavement structure 2. As in the case of FIG. 1, the mortar mixture is poured into the joint between the drainage pavement structure 2 and the surface layer 3 to fill the joint and the peripheral portion thereof, and the drainage pavement structure 2 and the surface layer 3 are tightly integrated. It is the same. Of course, a top coat may be applied if necessary.

Next, the room temperature paving mixture and the mortar mixture used in the present invention will be described.

<Room Temperature Paving Mixture> The room temperature paving mixture used in the present invention is a mixture having a porosity of 10 to 30%.
It is suitable for constructing drainage pavement, and its typical blending ratio is 0 to 15 parts by weight of asphalt emulsion and 1 to 15 parts by weight of hydraulic inorganic material to 100 parts by weight of aggregate. . The porosity is measured by measuring the weight in the air and water in a state where the mixture is compacted by rolling the mixture in a usual manner,
The actual density is obtained by the relational expression (air weight) / {(air weight)-(water weight)}, and then (porosity%) = 10.
It is a value obtained by the formula of 0-100 × {(actual density) / (theoretical density)}.

As the aggregate used in the mixture for room temperature pavement used in the present invention, any aggregate can be used as long as it is an aggregate for pavement described in "Asphalt Pavement Guidelines" issued by the Japan Road Association. It can be used, for example, crushed stone, crushed stone, gravel, steel slag, and the like, and asphalt-coated aggregate and recycled aggregate obtained by coating these aggregates with asphalt can also be used. Other similar granular materials, such as artificial fired aggregate, fired foam aggregate, artificial lightweight aggregate,
It is also possible to use ceramic ware, luxobite, synopearl, aluminum, plastic, ceramics, emery and the like.

The coarse aggregate used in the present invention is generally crushed stone No. 7 having a particle size range of 2.5 to 5 mm and a particle size range of 5
~ 13mm No.6 crushed stone, particle size range 13-20mm 5
No. crushed stone, crushed stone obtained by mixing one or more of these, or synthesized crushed stone can be used. It is also possible to use those aggregates coated with about 0.3 to 2% by weight of the aggregate, asphalt emulsion, straight asphalt, modified asphalt, epoxy resin and its curing agent, rubber or synthetic resin.

The amount of coarse aggregate used is preferably in the range of 93 to 75% by weight, when the total amount of aggregate is 100% by weight.

The fine aggregate used in the present invention is 2.5 mm
It passes through the sieve, for example, river sand, hill sand, mountain sand,
Screening powder, crushed stone dust, silica sand, artificial aggregate, stone powder, incinerator ash, clay, talc, fly ash, carbon black, etc., but also rubber powder particles, cork powder particles, wood powder particles, resin powder Granules, pulp, artificial aggregates, etc. may be mentioned, and these fine aggregates may be used alone or in combination of two or more.

The amount of fine aggregate used is preferably in the range of 7 to 25% by weight when the total amount of aggregate is 100% by weight.

The hydraulic inorganic material used in the room temperature paving mixture of the present invention includes cement, anhydrous gypsum, hemihydrate gypsum,
Powdery slag and the like can be mentioned.

As the cement to be used, ordinary Portland cement, early strength Portland cement, super early strength Portland cement, moderate heat Portland cement, white Portland cement, blast furnace cement, silica cement, alumina cement, expansion cement, blast furnace colloid cement, colloid Cement, ultra-rapid cement, white cement, fly ash cement, sulfate resistant cement, jet cement and the like can be mentioned. These hydraulic inorganic materials may be used alone or in combination of two or more thereof, and further, water and known admixture materials for cement such as shrinkage compensating materials, hardening accelerators, hardening retarders, It is also possible to use a dispersant, an air entraining agent, a thickening agent, a water reducing agent, a filler and the like in combination.

The amount of hydraulic inorganic material used depends on the aggregate 10.
It is usually in the range of 1 to 15 parts by weight, preferably 3 to 9 parts by weight, based on 0 parts by weight. When the amount of the hydraulic inorganic material is less than 1 part by weight, the stability of the cured product of the asphalt mixture at room temperature decreases, while when it exceeds 15 parts by weight, the rigidity of the cured product becomes excessive and the flexibility is not exhibited. It causes cracks.

The asphalt emulsion used in the mixture for room temperature paving of the present invention includes petroleum oil such as natural asphalt such as lake asphalt, straight asphalt, blown asphalt, semi-blown asphalt, solvent deasphalting asphalt (eg, propane deasphalting asphalt). Asphalt, heavy oil, tar, pitch, etc., or a mixture of two or more bituminous substances, using various surfactants and emulsifiers such as clay (for example, bentonite), and further alkali, acid, salt, dispersant , A protective colloid and the like are added as necessary, and the mixture is emulsified in water by an appropriate emulsifying machine such as a colloid mill, a homogenizer and a homomixer.

As the emulsifier, any of a cationic type, an anionic type and an amphoteric type can be used.

Examples of the cationic emulsifier usable in the present invention include aliphatic or alicyclic monoamines, diamines, triamines, amidoamines having a long chain alkyl group,
Polyaminoethylimidazoline, long-chain hydroxyalkyldiamine, rosinamine, ethylene oxide adducts of these amines, amine oxides, or these amine-based surfactants treated with acids such as hydrochloric acid, sulfamic acid, and acetic acid Examples thereof include water-dispersible salts, and quaternary ammonium salts of these amine-based surfactants. Further, nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene alkyl allyl ether, and oxyethylene / oxypropylene block copolymer can be used together with these surfactants.

Examples of anionic emulsifiers usable in the present invention include higher alcohol sulfates, alkylallyl sulfonates, alkylbenzene sulfonates, α-olefin sulfonates, higher alcohol ethoxylates, higher alcohol ethoxylate sulfates, Soap, naphthalene sulfonate and formalin modified products,
Examples thereof include alkali lignin salts, lignin sulfonates, casein alkali salts, and polyacrylates.

Examples of the amphoteric emulsifier that can be used in the present invention include alkylphenol, mono- and polyhydric alcohol acids, alkylene oxide adducts such as aliphatics, aliphatic amines, aliphatic amides and ethanolamines. Is mentioned.

The dispersant and protective colloid used in the asphalt emulsion include sodium naphthalene sulfonate, casein, alginic acid, gelatin, carboxymethyl cellulose, ethyl cellulose, hydroxyethyl cellulose, polyvinyl alcohol, sodium polyacrylate, lignin sulfonate, Examples include nitrohumates.

The asphalt emulsion used in the present invention is a post-mix type method in which the bituminous material to be emulsified and dispersed is directly mixed with one or more selected from rubber and thermoplastic polymer. It is also possible to use a modified asphalt emulsion modified by.

The rubber and the thermoplastic polymer used in the modified asphalt emulsion are, for example, natural rubber, gutta-vircha, cyclized rubber, styrene-butadiene rubber, styrene-isoprene rubber, isoprene rubber, polyisobutylene rubber, butadiene. Rubber, chloroprene rubber, butyl rubber, halogenated butyl rubber, chlorinated polyethylene, chlorosulfonated polyethylene, ethylene propylene rubber,
EPT rubber, alfin rubber, styrene / butadiene block copolymer rubber, styrene / isoprene block copolymer rubber, and ethylene / vinyl acetate copolymer, ethylene / acrylate copolymer, polyethylene, vinyl acetate / acrylate copolymer It is a thermoplastic polymer such as a polymer, and one or more of these are used in combination. These are, for example, powder, latex, emulsion, and water-based ones, and latex-, emulsion-, and water-based ones are used exclusively for the modified asphalt emulsion by the post-mix type method. It may be used in a modified asphalt emulsion by a mix type method.

In addition to the above rubber and thermoplastic polymer, in order to improve adhesiveness and compatibility, a thermoplastic solid resin, solid rubber, liquid resin, softening agent, as a tackifier,
You may add a plasticizer etc. For example, rosin and its derivative, terpene resin and petroleum resin and its derivative, alkyd resin, alkylphenol resin, terpene phenol resin, coumarone indene resin, synthetic terpene resin, alkylene resin, polyisobutylene, polybutadiene, and copolymerization of isobutylene and butadiene. Oils, mineral oils, process oils, pine oils, anthracene oils, pine oils, plasticizers, animal and vegetable oils, polymerized oils and the like. Further, an antioxidant, an antioxidant, sulfur and the like can be added. Furthermore, for the purpose of adjusting the viscosity of the modified asphalt emulsion, MC, CM
It is also possible to add a water-soluble polymer protective colloid such as C, HEC, PVA, or gelatin.

The compounding ratio of the asphalt to the rubber and the thermoplastic high molecular weight polymer in the modified asphalt emulsion is about 10 to 100 parts by weight, preferably about 100 to 100 parts by weight of the rubber and the thermoplastic high molecular weight polymer. Is 20
It is about 50 parts by weight. When the amount of the rubber and the thermoplastic polymer is less than 10 parts by weight, the modified asphalt emulsion has poor adhesiveness and grasping power to the aggregate after being decomposed and hardened, whereas 100 parts by weight. If it exceeds, the cohesive force is too strong and peeling from the aggregate is likely to occur, which is not economical. As the asphalt in the modified asphalt emulsion, the penetration (25 ° C) is 40 to 300 in consideration of the characteristics after decomposition and curing.
It is preferable to use a grade. The evaporation residue (solids) concentration of the modified asphalt emulsion is usually 40-80.
Although it is about wt%, in the present invention, it is desirable that the concentration is as high as possible.

In addition, these asphalt emulsions contain an ultraviolet absorber, various additives, a viscosity modifier, etc. for the purpose of improving heat resistance, preventing deterioration by ultraviolet rays, improving workability, and improving adhesiveness. You may add.

The amount of the asphalt emulsion used in the mixture for room temperature paving of the present invention is usually about 0 to 15 parts by weight, preferably about 5 to 10 parts by weight, based on 100 parts by weight of the aggregate. When the amount of the asphalt emulsion used exceeds 15 parts by weight, the stability of the room temperature paving mixture is rather lowered, which is not preferable.

The room temperature paving mixture of the present invention can be produced by mixing and stirring the above-mentioned aggregate, hydraulic inorganic material and asphalt emulsion.

The room temperature paving mixture thus produced contains
Further, the thermosetting resin may be added as an emulsion. Examples of the thermosetting resin emulsion include those obtained by emulsifying an epoxy resin and its curing agent. The amount of the thermosetting resin emulsion added may be very small, for example,
It is about 0.1 to 3 parts by weight with respect to 100 parts by weight of the aggregate. The amount of the curing agent used may be about 60 to 80 parts by weight based on 100 parts by weight of the solid content of the thermosetting resin emulsion. Further, a pigment or the like may be added to form a colored room temperature pavement mixture.

<Mortar-like mixture> Next, the mortar-like mixture used in the present invention will be described.

The mortar-like mixture used in the present invention comprises fine aggregate, asphalt emulsion, and hydraulic inorganic material as main components, and is prepared by mixing and stirring them. As the fine aggregate, the asphalt emulsion and the hydraulic inorganic material to be used, the same ones used for the mixture for room temperature paving can be used, and the typical mixing ratio of the asphalt emulsion is 100 parts by weight of the fine aggregate. On the other hand, it is in the range of 10 to 50 parts by weight, preferably 20 to 40 parts by weight. If the amount of asphalt emulsion is less than 10 parts by weight or more than 50 parts by weight,
Although it cannot be used at all, it has the disadvantage that it is difficult to obtain a good mixture. The typical blending ratio of the hydraulic inorganic material is 0 to 10 parts by weight, preferably 1 to 6 parts by weight, based on 100 parts by weight of the fine aggregate. When the amount of the hydraulic inorganic material exceeds 10 parts by weight, it cannot be said that it cannot be used, but it becomes difficult to obtain a good mixture.

For the decomposition of the asphalt emulsion, it is best to rely on natural decomposition, but in some cases, it may be compulsorily decomposed by using a decomposition agent.

The present invention will be further described below with reference to examples, but it goes without saying that the present invention is not limited to these examples.

[0054]

[Example 1] The existing pavement of the road on the premises of the factory site was stripped off from the side edge of the road over a length of 10 m with a width of 1 m. For the scraping, a road surface cutting machine having a heating device was used, and the cutting depth was 5 cm. 0.7 liters of Catiosol GM (asphalt emulsion with rubber, manufactured by Nichireki Co., Ltd.) is applied to the exposed existing pavement surface and the exposed surface of the U-shaped groove
m ^{2 was} sprayed to give a tack coat. The spraying was performed using an engine sprayer. After the tack coat, a water guiding pipe (stainless steel, diameter: 17 mm) was arranged along the U-shaped groove, and the end of the water guiding pipe was guided into a water collecting basin arranged at the end of the U-shaped groove. Subsequently, the mixture for room temperature pavement was dispersedly placed from the pug mill mixer after the cutting portion of the existing pavement and spread evenly with a rake or a scoop to obtain a uniform thickness. The spread thickness was set to 7 cm in consideration of the subsequent rolling reduction. After spreading and leveling, rolling was performed using a vibrating roller and a vibrator.

The materials used in the cold pavement mix were as follows: Aggregate and hydraulic inorganic material: A mixture of asphalt emulsion coated aggregate and early-strength Portland cement as hydraulic inorganic material. The mixing ratio of the early-strength Portland cement to the aggregate is 4 parts by weight based on 100 parts by weight of the aggregate. (Product name: Porous Rock (manufactured by Nichireki Co., Ltd .; packing 50 kg / bag)) Asphalt emulsion: Modified asphalt emulsion. Properties of solids in modified asphalt Viscosity (25 ° C) 350 Evaporation residue 70 (%) pH 9.0 (Product name: Poruszol (manufactured by Nichireki Co., Ltd., packaging 20 liters / can))

100 parts by weight of the porous rock was put into a pug mill mixer and kneaded for 30 seconds, then 8 parts by weight of porous sol was added and mixed for about 1 minute and a half to obtain a room temperature paving mixture. When a part of this room temperature mixture was taken and a physical property test was conducted separately, the following results were obtained.

<Marshall stability test> I. Curing days 3 days, test temperature 20 ℃ Stability 645 (kgf) Flow value 19 (1/100 cm) Porosity 21.5 (%) B. Curing days 7 days, test temperature 60 ℃ Stability 1220 (kgf) Flow value 21 (1/100 cm) Porosity 21.5 (%)

<Cantablo test> C. Curing days 7 days, test temperature 20 ℃ Loss rate 9.8 (%)

<Wheel tracking test> D. Curing days 7 days, test temperature 60 ℃ Dynamic stability 10,000 (times / mm)

<Labeling Test> e. Curing days 7 days, test temperature -10 ° C Abrasion amount 0.7 (cm ² )

After the paving of the above-mentioned room temperature paving mixture, a mortar-like mixture of fine aggregate, asphalt emulsion and hydraulic inorganic material was poured and filled at the joint with the existing pavement. The materials used for the mortar mixture were as follows:

[0062]   Fine aggregates and hydraulic inorganic materials: fine aggregates and early-strength Portora as hydraulic inorganic materials                             Mixture with hand cement. Early strength portland semé                             The ratio of the ingredients to the fine aggregate is 100 fine aggregate.                             2 parts by weight to parts by weight. (Product name: Lomenpa                             Catch (manufactured by Nichireki Co., Ltd., packaging 3.5 kg / bag)                             )   Asphalt emulsion: Modified asphalt emulsion                             Properties of solids in modified asphalt                               Penetration (25 ° C) 62 (1/10 mm)                               Softening point 58 (℃)                               Evaporation residue 42 (%)                           (Product name: Packsol (manufactured by Nichireki Co., Ltd.)                             1 liter / paper box))

When 3.5 liters of the above-mentioned lomen patch was mixed with 1 liter of Pakzol and stirred, a mortar-like mixture was obtained in about 15 seconds. A part of the obtained mortar-like mixture was taken and a physical property test was conducted separately, and the following results were obtained. <Properties before curing> Pot life (11 ° C) 8 minutes Curing time (11 ° C) 25 minutes <Properties after curing> Marshall stability 385 kgf Marshall flow value 42 (1/100 cm)

The above mortar-like mixture was poured from the joint surface to the existing pavement side with a width of 5 cm and to the drainage pavement side with a width of 20 cm, and after waiting for the mortar-like mixture to fully penetrate, the overflowing mortar-like mixture was formed. And was spread across the pavement body on both sides of the joint surface with a rubber rake so as to cover the joint surface with a thickness of 1 to 2 mm. The mortar-like mixture solidified in about 5 to 7 minutes, and the joint surfaces were firmly integrated and bonded.

After the pavement, a sprinkler was used to sprinkle the road side end after a curing period of one day, but the water was quickly infiltrated and discharged from the road side end, and the central part of the road was flooded. It never happened. In addition, one month after paving, five sample cores were sampled and observed with a core borer from around the joint between the drainage pavement structure and the existing pavement. The part was completely filled with the mortar-like mixture.

[0066]

Example 2 A submerged surface layer portion having a width of 35 cm from the L-shaped groove side groove, including a part of the base layer portion, was cut to a thickness of 6 cm by a small road surface cutting machine. After cleaning after cutting, 0.9 l / m ^{2 of} asphalt emulsion containing rubber (trade name: Catiosol GM (manufactured by Nichireki Co., Ltd.)) as a tack coat
Sprayed. After spraying, the same water conduit pipe as in Example 1 was laid, and then the room temperature paving mixture was laid.

The composition of the room temperature paving mixture used is as follows. Aggregate: No. 6 crushed stone (Kuzu, Tochigi Prefecture) 66.7% by weight No. 7 crushed stone (Kuzu, Tochigi Prefecture) 24.4% by weight Hydraulic inorganic material: Hayatake Portland Cement (Sumitomo Osaka Cement Co., Ltd.) 7 1.2% by weight Tap water (W / C = 23.6%) 1.7% by weight Admixture (Mighty 100 (manufactured by Kao Corporation) 1.1 parts by weight per 100 parts by weight of cement Additive (styrene butadiene) Rubber) 20.5 parts by weight to 100 parts by weight of cement

A predetermined amount of hydraulic inorganic material, tap water, admixture, and additive are charged into a pan-type mortar mixer, and 20 to 3 are added.
After mixing for 0 seconds, the aggregate was added and further mixed for 90 to 120 seconds to obtain a room temperature paving mixture. The physical properties of this room temperature paving mixture after being cured for 28 days were as follows. Compressive strength 343 (kgf / cm ² ) Porosity 22 (%) Cantablo test loss rate 8.9 (%)

After paving the mixture for room temperature paving, the same mortar mixture as in Example 1 was used to fill and integrate the joints. As in Example 1, after a one-day curing period, water was sprinkled on the road-side end by a sprinkler, but the water penetrated and discharged from the road-side end promptly, and the center of the road was flooded. It never happened. In addition, one month after paving, five sample cores were sampled and observed with a core borer from around the joint between the drainage pavement structure and the existing pavement. The part was completely filled with the mortar-like mixture.

[0070]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, a drainage pavement structure using a mixture for room temperature pavement is constructed at the road side end adjacent to another existing or new pavement structure. , Even if a large amount of snowmelt water flows out from the snow accumulated on the road side edge or rainwater gathers at the road side edge, these snowmelt water, rainwater, etc. are quickly infiltrated and discharged. Is something that can be done. Further, in the present invention, since the drainage pavement structure is constructed as a single layer constituting the surface layer, the construction is simple and economically excellent. Moreover, since the room temperature pavement mixture used in the present invention does not require heating at the time of construction and the required amount can be easily manufactured on site, not only when newly installed, but especially when repairing only the road side end portion. In addition to being extremely effective when a drainage pavement structure is formed only on the road side end, it also has an excellent effect that it does not generate CO ₂ gas due to heating of the material and has little impact on the global environment. It is a thing. Furthermore, since the mortar-like mixture is poured into the joint between the drainage pavement structure and another existing or new pavement structure and the joint is filled and integrated, an extremely durable partially drainage road pavement structure is provided. Is what you get. As described above, the present invention has various excellent effects and is an industrially extremely useful invention.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a partially drainable road pavement structure of the present invention.

FIG. 2 is a cross-sectional view showing another example of the partially drainage road pavement structure of the present invention.

FIG. 3 is an enlarged view of a joint portion.

FIG. 4 is a cross-sectional view showing another example of the partially drainage road pavement structure of the present invention.

[Explanation of symbols]

1 Partly drainage road pavement structure 2 Drainage pavement structure 3 surface 4 base layers 5 Upper roadbed 6 water pipe 7 U-shaped groove 8 accumulated snow 9 vehicle tires 10 Mortar-like mixture 11 corner notch 12 Center line 13 Formwork 14 Anchor bolt 15 Lower roadbed 16 Roadbed

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenichi Anku 7-1-55, Minami Enkajima, Taisho-ku, Osaka City, Osaka Prefecture Sumitomo Osaka Cement Co., Ltd. Cement Concrete Research Institute (72) Inventor Norio Sumida 1958, Omiya, Omiya, Saitama Prefecture -243 (72) Inventor Ryo Ito 4-16-19 East, Kokubunjicho Station, Shimotsuga-gun, Tochigi Prefecture (72) Inventor Takashi Akimoto 6-10-23, Emino Nishi, Eniwa-shi, Hokkaido (56) Reference JP-A-6-65903 (JP , A) JP-A-9-264001 (JP, A) JP-A-4-92003 (JP, A) JP-A-4-131407 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB) Name) E01C 7/08 E01C 11/24

Claims (11)

(57) [Claims] 1. A road is defined as a central portion of a road through which vehicles pass.
Longitudinal crossing of the road at the end of the road where vehicles are less likely to pass
Divided in the direction, aggregate, asphalt emulsion and hydraulic inorganic material
Asphalt emulsion to 100 parts by weight of aggregate
Ratio of 0 to 15 parts by weight, hydraulic inorganic material 1 to 15 parts by weight
, And a drainage pavement structure with a thickness of 3 to 10 cm constructed by using a room temperature pavement mixture having a porosity of 10 to 30%, and another existing or new pavement structure in the center of the road where vehicles pass. A partially drainage road pavement structure that is adjacent to and has a road side edge where vehicles are less likely to pass. 2. The partially drainage road pavement structure according to claim 1, wherein the drainage pavement structure at the road side end is present with a width of 10 to 200 cm from the road side end. 3. The partially drainage road pavement structure according to claim 1 or 2, wherein the drainage pavement structure on the road side end exists only as a single layer constituting the surface layer portion. 4. The partially drainage road pavement structure according to claim 1, 2 or 3, wherein the drainage pavement structure incorporates a water conduit pipe. 5. The joint portion between the drainage pavement structure and another existing or new pavement structure or a peripheral portion thereof is a fine aggregate,
The filling and integration with a mixture containing an asphalt emulsion and a hydraulic inorganic material.
Or the partially drainage road pavement structure described in 4 . 6. A road is defined as a central portion of the road through which vehicles pass.
Longitudinal crossing of the road at the end of the road where vehicles are less likely to pass
It is divided in the direction, and adjacent to other existing or new pavement structure in the central part of the road where vehicles pass, aggregates and asphalt emulsion are added to the road side end where vehicles do not pass easily.
A hydraulic inorganic material is added to 100 parts by weight of the aggregate.
0 to 15 parts by weight of the emulsion, hydraulic inorganic material 1 to 15
A part for paving a mixture for room temperature paving having a porosity of 10 to 30% and including a weight part ratio, and constructing a drainage pavement structure having a thickness of 3 to 10 cm at the road side end where vehicles do not pass easily. Construction method of drainage road pavement structure. 7. The method for constructing a partially drainage road pavement structure according to claim 6, wherein the road side end of the existing pavement structure is shaved off, and the room temperature pavement mixture is paved after the scraping off. 8. The partially drainage road pavement according to claim 6, wherein a pavement structure other than the surface layer at the road side end is constructed, and then a room temperature paving mixture is laid on the surface layer at the road side end. How to build the structure. 9. The method for constructing a partially drainage road pavement structure according to claim 6, 7 or 8 , wherein the drainage pavement structure is constructed with a width of 10 to 200 cm from the road side edge. 10. The method for constructing a partially drainage road pavement structure according to claim 6, 7, 8 or 9 , wherein a water pipe is laid and then a mixture for cold pavement is laid. 11. A mixture containing a fine aggregate, an asphalt emulsion, and a hydraulic inorganic material is poured into a joint between a drainage pavement structure and another existing or new pavement structure,
The joint part and its peripheral part are filled and integrated .
The method for constructing a partially drainable road pavement structure according to 8, 9, or 10 .