Epoxy asphalt and crushed stone drainage foundation

A technology of epoxy asphalt and crushed stone, applied in roads, on-site coagulation pavement, roads, etc., can solve the problems of poor fatigue durability, poor corrosion resistance, and high cost, and achieve good fatigue durability and excellent resistance. Alkaline, cost reduction effect

Active Publication Date: 2010-11-17
CCCC FIRST HIGHWAY CONSULTANTS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an epoxy asphalt macadam drainage base to solve the problems of poor fatigue durability, poor corrosion resistance and high cost in the prior art.

Method used

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  • Epoxy asphalt and crushed stone drainage foundation
  • Epoxy asphalt and crushed stone drainage foundation
  • Epoxy asphalt and crushed stone drainage foundation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 : A large-porosity epoxy asphalt macadam drainage base with drainage function is a mixture formed by uniform mixing at 110°C with epoxy asphalt as the binder and open-graded crushed stone as the aggregate. The mass ratio of epoxy asphalt to gravel is 3.0:100, and the design gradation of the aggregate is as follows:

[0027]

[0028] The laying process of the epoxy asphalt gravel drainage base as mentioned above is as follows: firstly, clean the surface of the subbase; secondly, evenly spray the epoxy asphalt waterproof bonding layer, according to 0.4Kg / m 2 thirdly, lay epoxy asphalt macadam drainage base, rolling and forming, pavement thickness is 6cm, and wait for the end of the age to construct the surface layer.

Embodiment 2

[0029] Example 2: The difference from Example 1 is that the mass ratio of epoxy asphalt to gravel is 4.0:100, and the epoxy asphalt waterproof bonding layer is laid according to 0.6Kg / m 2 The amount of spraying is controlled and the paving thickness is 10cm.

Embodiment 3

[0030] Example 3: A large-porosity epoxy asphalt macadam drainage base with drainage function is a mixture formed by uniform stirring at 110°C with epoxy asphalt as the binder and open-graded gravel as the aggregate material, wherein the mass ratio of epoxy asphalt to crushed stone is 3.0:100, and the design gradation of the aggregate is as follows:

[0031]

[0032] The laying process of the epoxy asphalt gravel drainage base is as follows: firstly, clean the surface of the subbase; secondly, spray the epoxy asphalt waterproof adhesive layer evenly, according to 0.4Kg / m 2 thirdly, lay epoxy asphalt macadam drainage base, rolling and forming, pavement thickness is 8cm, and wait for the end of the age to construct the surface layer.

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Abstract

The invention relates to epoxy asphalt and crushed stone drainage foundation and a paving process thereof. The conventional epoxy asphalt is an irreversible solid product of the solidification of asphalt by adding epoxy resin into the asphalt. Compared with the common ATPB, the epoxy asphalt and crushed stone is 2 to 3 times higher in stability than ATPB and more than 1.5 times higher in fatigue life than ATPB. The epoxy asphalt and crushed stone drainage foundation provided by the invention is a mixture formed by wet-mixing of epoxy resin serving as a bonding material and open-grade crushed stone serving as aggregate. The paving process of the epoxy asphalt and crushed stone drainage foundation comprises: firstly, sweeping the surface of a subbase layer; secondly, uniformly spraying an epoxy asphalt waterproof bonding layer while controlling the spray amount to be 0.4 to 0.6kg/m<2>; and thirdly, paving the epoxy asphalt and crushed stone drainage foundation, forming the epoxy asphalt and crushed stone drainage foundation by rolling till the porosity reaches 18 to 24 percent and constructing a surface layer at the end of an aging period. The epoxy asphalt and crushed stone drainage foundation and the paving process thereof solve the problems of low fatigue durability, low anticorrosion resistance, high construction cost, environmental pollution and the like in the prior art.

Description

technical field [0001] The invention belongs to the technical field of transportation engineering and relates to an epoxy asphalt macadam drainage base. Background technique [0002] In recent years, in view of the serious water damage of semi-rigid base asphalt pavement, a series of researches on drainage base have also been carried out in China. However, we found that there are many deficiencies in the composition of various drainage base materials. For example, the graded crushed stone material has low rigidity, and because the graded crushed stone material is loose, it can only bear compressive stress but not tensile stress, and the graded crushed stone material in the pavement structure layer The modulus value of the stone layer is greatly affected by the type of the underlying layer; in addition to the temperature shrinkage of the porous concrete drainage base, plastic shrinkage and drying shrinkage will occur. If the tensile strength is not enough to resist the stress...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/22E01C7/32C04B26/26
Inventor 丁小军陈团结李刚赵明李智白雪梅曹海波陈实雷宇向豪
Owner CCCC FIRST HIGHWAY CONSULTANTS
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