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An asphalt-based composite material for pavement crack repair

A technology for composite materials and pavement cracks, which is applied in the field of pavement repair materials to achieve the effects of simple construction, reduced environmental pollution and long validity period

Inactive Publication Date: 2015-12-09
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a composite material for repairing pavement cracks with a certain strength, strong cohesive force and long validity period, which can overcome the technical defects of existing joint filling materials

Method used

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  • An asphalt-based composite material for pavement crack repair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Component A: Select 5.2g of anionic emulsifier (carboxylate type), 46g of water and 9.8g of heavy traffic road asphalt AH-7079.8g to prepare emulsified asphalt in a colloid mill; select 133g of anionic emulsified asphalt (carboxylate type), 1g of Mix water agent (polycarboxylic acid type), 1g defoamer (silicon type), and 3g water-based acrylic resin in a mortar mixer for 10 minutes to obtain component A. The control speed is 1200rpm.

[0034] Component B: Mix 100g of PO42.5 cement, 90g of quartz sand and 1g of aluminum powder in a mortar mixer for 15 minutes to obtain component B. The control speed is 60rpm.

[0035] When in use, mix A and B components evenly on site, and then the joint filling construction can be carried out.

Embodiment 2

[0037] Component A: Select 6g of anionic emulsifier (carboxylate type), 54g of water and heavy traffic road asphalt AH-9090g to prepare emulsified asphalt in a colloid mill; prepare 150g of anionic emulsified asphalt (carboxylate type), 3g of water reducer (aliphatic type), 1g defoamer (organic silicon type), 5g SBR latex, 10g water and stir in a mortar mixer for 10min to obtain component A. The control speed is 1200rpm.

[0038] Component B: Mix 100g of PO42.5R cement, 110g of quartz sand and 1g of calcium oxide in a mortar mixer for 15 minutes to obtain component B. The control speed is 60rpm.

[0039] When in use, mix A and B components evenly on site, and then the joint filling construction can be carried out.

Embodiment 3

[0041] Component A: Select 4.8g of anionic emulsifier (sulfonate type), 43.2g of water and heavy traffic road asphalt AH-11072g to prepare emulsified asphalt in a colloid mill; prepare 120g of anionic emulsified asphalt (sulfonate type), 1g of Aqueous agent (naphthalene type), 1g defoamer (polyether type), 4g water-based epoxy resin, 10g water are stirred in a mortar mixer for 10min to obtain component A. The control speed is 1200rpm.

[0042] Component B: Mix 100g of PO42.5R cement, 70g of quartz sand and 1g of calcium oxide in a mortar mixer for 15 minutes to obtain component B. The control speed is 60rpm.

[0043] When in use, mix A and B components evenly on site, and then the joint filling construction can be carried out.

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Abstract

The invention discloses an asphalt base composite material for pavement crack repair. The asphalt base composite material for pavement crack repair is prepared from a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 120-150 parts of anionic emulsified asphalt, 1-3 parts of water reducing agent, 1-3 parts of defoaming agent, 3-8 parts of binder and 0-10 parts of water, and the component B comprises the following raw materials in parts by weight: 100 parts of cement, 70-110 parts of sand and 0.01-0.06 part of expanding agent. The asphalt base composite material for pavement crack repair has the flexibility of asphalt, the rigidity of cement and certain strength, is used for crack pouring and can bear and transfer loading force; the binder is added to the material so as to play a role of reinforcing the binding force between the material and crack walls, so that the service life of a pavement is prolonged, and the re-cracking phenomenon is difficult to occur. The asphalt base composite material for pavement crack repair has the advantages of low cost price, simple construction, low requirements on constructors, low energy consumption, low cost, strong binding power and long useful life and can be widely applied to the pavement crack repair.

Description

technical field [0001] The invention relates to a pavement repairing material, in particular to an asphalt-based composite material for pavement crack repairing. Background technique [0002] Asphalt pavement and cement pavement are placed in the natural environment for a long time after they are built, which leads to various diseases during use, such as cracks, ruts, wrapping, settlement, etc. Cracks are one of the earliest and most common and most important diseases. The appearance of cracks will reduce the driving safety and comfort of the road surface. If the cracks on the road surface are not dealt with in time, rainwater will invade the roadbed along the cracks and cause the road surface to produce structural damage. sexual destruction. The main causes of road cracks are load, low temperature shrinkage and temperature fatigue. [0003] There are many ways to treat cracks, such as filling joints, slurry seals, gravel seals, micro-surfacing, etc. The SHRP-H-358 program...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B24/36C04B111/72
Inventor 范维玉孙华东张锐梁明赵品晖钱成多南国枝罗辉孔祥军
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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