JP3032490B2 - Pavement structure and pavement method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention mainly relates to roads,
The present invention relates to a highly durable pavement structure and a pavement method used as landscape pavement for parks and the like.

[0002]

2. Description of the Related Art Hitherto, as this kind of landscape pavement, a pavement structure composed of an earth-based pavement material and a fixing agent for solidifying the same has been adopted.

[0003]

However, this pavement structure is not sufficiently strong, is easily damaged by a vehicle, and has a substantially uniform continuity in composition. However, problems such as local pavement surface roughness or cracking are likely to occur. Moreover, this may increase the effect over time.

The present invention has been made based on the above circumstances, and an object of the present invention is to provide a simple pavement method which realizes a pavement structure which has both sufficient strength and semi-flexibility and is excellent in landscape. It is intended to provide.

[0005]

For this reason, in the present invention, a pavement base made of an asphalt mixture having a large porosity (10 to 30%) having an open particle size or a porous concrete is formed, and an earth-based pavement material is formed in the gap. The mixture of the fixing agent is filled and fixed. In the case where an asphalt mixture having an open particle size is used for the pavement substrate, it is preferable to use crushed stone No. 5 or crushed stone No. 6 as a crushed stone. The amount of the fixing agent is 0.5 to 20% by weight of the soil-based pavement material, preferably 1 to 20% by weight.
A ratio of １５15% by weight is good. As the fixing material, SBR,
Emulsions such as CR, EVA, acrylic, EEA, and CR, or polymer-modified emulsions can be used. As the earth-based pavement material, masago, Kanto loam, sandy loam and the like can be used.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The pavement structure of the present embodiment shown in FIG. 1 employs asphalt pavement using an open-grain asphalt mixture having a high porosity as a porous pavement substrate having voids. The pavement substrate made of the open-grain asphalt mixture contains mainly crushed stone No. 5 or crushed stone No. 6 as crushed stone.

[0007] From the surface of the pavement substrate, a filler is pressed and filled into the internal voids by rolling. This filler is a mixture of an earth-based pavement material and a fixing agent. As the earth-based pavement material, masago, Kanto loam, sandy loam and the like are preferable, and the particle size is preferably 0.075 mm or more. Styrene-butadiene rubber (SBR), chloroprene rubber (CR), ethylene-vinyl acetate copolymer (E
VA), ethylene / ethyl acrylate copolymer (EE
A), a polymer emulsion such as an acrylic polymer, or a modified emulsion thereof is preferred. The amount of the fixing material is 0.5 to 20% by weight of the earth-based pavement to be filled, preferably 1 to 20% by weight.
~ 15% by weight is good.

The asphalt binder of the open particle size asphalt mixture includes a high-viscosity modified asphalt,
A binder having a large adhesive strength such as modified asphalt type 1 and type 2 is preferable, but straight asphalt may be used.

[0009] The surface of the pavement structure thus constructed is
For example, by polishing with a brush or the like to remove the binder adhering to the pavement surface, the appearance of the landscape pavement using the earth-based pavement material is stunningly exhibited. According to this pavement structure, there is no roughening or cracking of the pavement surface due to rainwater, and no damage is caused by a vehicle getting into the vehicle. This is because the open-grain asphalt mixture as the pavement substrate is resistant to cracks and other cracks, and the filler obtained by mixing the soil-based pavement material and the fixing material filled in the pavement substrate has excellent viscosity, bending, and breaking strength. This is because they have properties and are resistant to cracking and low-temperature brittleness.

[0010] An example of the compounding of the filler consisting of the fixing agent and the earth-based pavement material in this example and the test results with this filler will be described. In this composition example, Masago soil 1 as an earth-based pavement material
The modified acrylic emulsion as a fixing material was 4.0 parts by weight with respect to 00 minutes, and the water content was 10%. FIG. 2 is a graph showing the test results of the relationship between the uniaxial compressive strength and the curing time of the sample of the filler. FIG. 3 is a graph showing the relationship between the compaction density of the filler itself and the elastic modulus at break. These test results are not a pavement structure but a strength test of the filler itself. Since the pavement base itself such as open-grained ascon has a considerable strength, the pavement structure of the present example has a performance further superior to the strength of the filler itself.

In the above-described example, a pavement substrate made of an asphalt mixture having an open particle size is described as a porous pavement substrate having voids. However, a cement-based pavement substrate may be used. May be.

[0012]

According to the pavement structure of the present invention, a filler formed by mixing an earth-based pavement material and a fixing material is filled and solidified in the voids of a pavement substrate having a large porosity. A landscape pavement having both durability and semi-flexibility and exhibiting a preferable earth-based landscape can be provided by a simple construction work.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a pavement structure according to an embodiment of the present invention.

FIG. 2 is a graph showing a strength test result of a filler to be filled in a pavement substrate in the present invention.

FIG. 3 is a graph showing the relationship between the compaction density and the elastic modulus at break of a filler to be filled in a pavement substrate in the present invention.

[Explanation of symbols]

 1 crushed stone 2 filler

Claims (5)

(57) [Claims] 1. A porous pavement substrate having voids, an earth-based pavement material filled in the voids of the pavement substrate, and a solidified pavement material filled in the voids of the pavement substrate solidified in the voids. A pavement structure having a fixing agent. 2. The pavement structure according to claim 1, wherein the fixing agent is a polymer emulsion. 3. The method of claim 2, wherein the polymer emulsion is SBR,
The pavement structure according to claim 2, wherein the pavement structure is a substance selected from the group consisting of CR, EVA, acrylic, EEA, CR, and a modified emulsion thereof. 4. The pavement structure according to claim 1, wherein the earth-based pavement material is at least one substance selected from the group consisting of masago, Kanto loam, and sandy loam. 5. A method of forming a porous pavement substrate having voids, mixing an earth-based pavement material and a binder to form a filler, and applying the filler to the surface of the pavement substrate and compacting the same. And filling the voids of the pavement substrate with the filler by the following method.