JPH11269807A - Execution method of draining pavement and structure thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an execution method, by which the scattering of the surface-layer aggregate and dulling and clogging of a draining paving body a new paved or beforehand paved are prevented and reduced, while giving the effects of slip prevention and reflection prevention to the draining paving body and maintaining a draining function for a prolonged term, and structure thereof. SOLUTION: A new draining paving body or a cold curing type liquefied reinforcing resin, etc. at a current place after usage in combination are scattered, permeated, cured and bonded, and the function of the draining paving body is maintained and reinforced. A slip-preventive high-hardness fine aggregate is scattered before the reinforcing resin is cured, the high-hardness fine aggregate is bonded with the surface layer of the paving body by utilizing the curing of the reinforcing resin and the surface of the draining paving body is given a slip-preventive effect and a reflection-preventive effect.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an open-grade asphalt pavement (hereinafter referred to as an aging drainage pavement) in which aging such as scattering of aggregate due to exfoliation of aggregate and asphalt has started.
Alternatively, a newly laid open-grained asphalt pavement (hereinafter referred to as a newly drainable pavement) may be formed by mixing a main curing agent / curing agent of a moisture-curing type of a room temperature-curable liquid flexible resin, or a two-component mixture-curing type. In the following, asphalt pavement (hereinafter, referred to as reinforced resin) and high-hardness fine aggregate with anti-slip properties (hereinafter, referred to as high-hardness fine aggregates)
Drainage pavement) to prevent slip, prevent glare, prevent back reflection and strengthen aggregate fastening power, prevent aggregate from scattering by recovery, and asphalt binder (hereinafter referred to as binder)
The present invention relates to a construction method and structure of a drainage pavement, which is characterized by preventing and reducing crushing and clogging of the pavement, preventing scattering of aggregates of the drainage pavement, and maintaining the function for a long time. .

[0002]

2. Description of the Related Art Conventionally, the following three methods are mainly used for repairing an aging drainage pavement, but each of them has many problems. The conventional method is as follows.

(1) Replacement method The replacement method is to provide a drainage pavement using a new material, requires a large-scale construction system, requires a long construction period, and particularly in urban areas, where traffic congestion occurs due to construction. There are also many complaints from roadside residents about noise. In addition, a large amount of asphalt concrete waste is generated (hereinafter referred to as generated material)
In addition, the processing becomes troublesome. Furthermore, because a large amount of asphalt-mixed material (hereinafter referred to as new material) is newly introduced, it cannot be said that this is a resource-saving method, and it is not only an economic burden to transport generated materials and new materials. It will be a great deal of discomfort to roadside residents.

(2) Road reclaimed pavement method The pavement is regenerated by mixing the bituminous emulsion and new materials at the current position using the material at the current position, and regenerating the pavement. Although it is advantageous in that the amount of generated material is reduced, it does not restore the fastening force between the aggregate and the binder, and is not applied to full-scale heavy traffic pavement repair work. In particular, it can be said that there is no application example to drainage pavement.

(3) Overlay method This is a method in which the surface layer of an existing pavement is partially cut or a new material is paved through an adhesive layer as it is. Exfoliation of aggregates and scattering of aggregates,
In addition, there are problems such as a step with the seam.

Also, as a problem of the drainable pavement, even at the time of new construction, the surface aggregate is deprived due to twisting due to turning back of the handle, etc., and the aggregate starts to be scattered or the asphalt is crushed by the flow of the asphalt. There were drawbacks such as ease of operation. Therefore, Japanese Patent Application Laid-Open No. 5-222705 has been proposed as a surface strengthening method based on an acrylic resin, but the amount of a monomer (alkyl acrylate or the like) is as large as 50% by weight or more. When the monomer is brought into contact with oxygen in the air, the polymerization reaction is inhibited, and poor curing is likely to occur. When the drainage pavement is impregnated with a resin containing a large amount of monomer, the resin flows in a thin film, and even if the air is blocked with wax, a large amount of the monomer and oxygen are combined to inhibit the polymerization reaction,
A large amount of quenching monomer is generated. The monomer for terminating the reaction dissolves (cuts back) the fastener and returns the strength of the pavement. In addition, the cured resin film on the pavement surface has low slip resistance and reflects light, so that it is easy to slip back, and there is a drawback that visibility deteriorates due to reflection.

[0007]

The disadvantages of open-grained asphalt pavement such as road drainage pavement are the early aging due to the thixotropy phenomenon, and the decrease in peel resistance between the aggregate and the fastening agent due to water, and Or, "Aggregate debris scatters" due to twisting with tires, "Crushing" due to flow of fasteners due to high temperature in summer, dirt, dust, etc. due to adhesive strength and surface roughness of fasteners "Clogging" or the like may occur, and there is a danger that stones may jump or the drainage function may deteriorate. Therefore, a new drainage pavement or a reinforced resin or the like is sprayed and hardened and adhered at the current position after operation to maintain and strengthen the function of the drainage pavement.

The present invention is directed to repairing an aging drainage pavement at the current position without repairing and transporting generated materials and new materials, so that the pavement can be repaired simply and resource-saving in a short time. An object of the present invention is to provide a construction method and a structure for recovering and strengthening the function of a body with a reinforcing resin or the like.

In addition, when used for newly constructed drainage pavement, aging of the binding agent, scattering of aggregates, crushing,
An object of the present invention is to provide a construction method and a structure of a drainage pavement characterized by preventing and reducing problems such as clogging and slippage, and maintaining the function of the drainage pavement for a long period of time.

[0010]

DISCLOSURE OF THE INVENTION The present invention relates to a method for renewing a drained pavement which has been newly paved or which has already been paved, at an early stage in a labor-saving and resource-saving manner, and maintaining the function of the drainable pavement for a long period of time. This is to strengthen repairs or prevent aging.

Hereinafter, the materials used in the present invention will be described in detail. Examples of the moisture-curable urethane resin of the room-temperature-curable liquid flexible resin used in the present invention include polyether polyisocyanate and polyester polyisocyanate, and a prepolymer using NCO%; 5 to 20% of aromatic isocyanate. Is preferred. As a two-part mixed-curing resin, the main component of the epoxy resin is diglycidyl ether bisphenol A and / or diglycidyl ether bisphenol F as a main component, and a reactive diluent and / or a non-reactive diluent, an acrylic oligomer or water. The curing agent is preferably a urethane-modified polyamine,
It is an acrylic-modified polyamine, an epoxy-modified polyamine, or the like, and may be further modified with a fatty amine or the like to impart flexibility. The main component of the urethane resin is a polyether polyisocyanate, a polyester polyisocyanate, or the like, and a prepolymer using NCO%; 10 to 30% of an aromatic isocyanate is preferable, and the curing agent is mainly composed of a polyether polyol and / or a polyester polyol. , Aromatic polyamines and dibutyl phthalate (DBP)
And the like (hereinafter, referred to as a plasticizer). The main component of vinyl ester resin is vinyl ester /
(Meth) acrylate / paraffin wax = 5
5 to 90/45 to 10 / 0.3 to 3.0 parts by weight and a mixture obtained by mixing dimethylaniline and / or cobalt naphthenate in an appropriate amount in consideration of the pot life, curability, etc. Agents and the like may be used in combination. The curing agent is preferably one obtained by mixing a small amount of alcohol or ethyl acetoacetate with a plasticizer, and dissolving 1 to 20% of a peroxide such as benzoyl peroxide. Both the unsaturated polyester resin and the main agent / curing agent have the same composition as that of the vinyl ester resin, and the main component of the main agent is an unsaturated polyester / (meth) acrylate mixture. (Meth) acrylic acid ester compounding amount of unsaturated polyester resin and vinyl ester resin is 40% of resin system containing curing agent
The following are preferred in preventing poor curing.

[0012] High hardness fine aggregates such as crushed ceramic sand, emery, alundum, corundum, crushed sandstone, silica sand, etc., having a particle size of 40 to 8 mesh, are sprayed before the above-mentioned cold-setting liquid flexible resin is cured. Then, the resin is adhered to the surface of the pavement body by using the curing of the resin to give the surface of the pavement an anti-slip effect and an anti-reflection effect.

[0013]

According to the present invention, the surface pavement of a newly laid or already laid drainage pavement can be prevented from being scattered and the surface layer aggregates can be prevented and reduced, and the drainage pavement can be prevented from slipping. And a construction method for providing a drainage prevention function for a long period of time and a structure thereof.

Next, the present invention will be specifically described with reference to Examples and Comparative Examples.

[0015]

EXAMPLES Table 1 and Table 2 below show the composition, properties and effects of the cold-setting liquid flexible resin. The drainage pavement used has a porosity of 25% and a pavement thickness of 5 cm. The added amount of the high viscosity fastening agent is 5%. Adhesion using a Kenken tester,
The test was performed by bonding with a grease-like epoxy resin. The pavement was checked for serviceability in front of the main gate in the hall, where heavy vehicles come in and out of turn. The service test period is one year.

[0016]

[Table 1]

[0017]

[Table 2]

Claims (2)

[Claims] 1. A water-curable liquid flexible resin or a mixture of a base resin and a hardener of a liquid-curable liquid flexible resin is sprayed and / or penetrated from the surface layer of an open-grain asphalt pavement laid for the purpose of drainage, and immediately has a high hardness. Fine aggregate is evenly sprayed as an anti-slip material, and the room temperature-curable liquid flexible resin mixture is cured, and high-hardness fine aggregate is adhered to the surface layer of the open-grain asphalt pavement to increase slip resistance and prevent slip. In addition, a drainage pavement construction method and structure for the purpose of preventing surface layer aggregates from being scattered from the open-grained asphalt pavement, and preventing and reducing crushing and clogging of the open-grained asphalt pavement. 2. A moisture-curable type of room temperature-curable liquid flexible resin is a urethane resin, and a two-component mixed-curable type main component is an epoxy resin, a urethane resin, a vinyl ester.
(Meth) acrylic acid ester mixture, unsaturated polyester / (meth) acrylic acid ester mixture, and as a non-slip, high hardness fine aggregate, ceramic crushed sand, emery, alundum, corundum, sandstone crushed sand, silica sand, etc., with a particle size of 40 ~
The construction method and structure for drainage pavement according to claim 1, wherein the construction is 8 mesh.