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Composite cold repair material for asphalt pavement pit repair

A technology for asphalt pavement and cold repair material, applied in the field of repair and road maintenance, can solve the problems of short life, low later strength, poor compatibility, etc., and achieve the effect of simple construction, less environmental pollution, and good compatibility

Inactive Publication Date: 2014-07-30
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Compared with hot-patch materials, the advantages of cold-patch materials are very prominent, but one of the biggest shortcomings of existing cold-patch and hot-patch materials is that the materials are poorly compatible with the original road surface after molding, have low strength in the later stage, and short service life.

Method used

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  • Composite cold repair material for asphalt pavement pit repair
  • Composite cold repair material for asphalt pavement pit repair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Component A: Take 72g of cationic emulsifier (quaternary ammonium salt-dodecyltrimethylammonium bromide), 1100g of water, and 90g of hydrochloric acid to prepare soap liquid. The temperature of soap liquid is controlled at 50°C. AH-70 1800g was heated to 135°C, and processed with the above soap in a colloid mill for 1min to prepare emulsified asphalt; take 3000g of cooled cationic emulsified asphalt prepared by the above method, 50g of water reducer (polycarboxylic acid type-terpolymer Carboxylic acid), 50g defoamer (organosilicon type-octamethylcyclotetrasiloxane), 90g water-based acrylic resin, 3500g PO42.5 cement, 1600g quartz sand with a particle size of 0.15-0.25mm, 1g of aluminum powder Stir in a mortar mixer for 3 minutes to obtain component A, and control the speed at 300 rpm; the speed of the colloid mill is 3000 rpm.

[0046] Component B: Mix 6000g of basalt with a particle size of 20-30mm, 9000g of basalt with a particle size of 10-20mm, 2600g of basalt with ...

Embodiment 2

[0049] Component A: Select 60g of cationic emulsifier (alkylpyridinium salt-cetylpyridinium chloride), 1200g of water, and 200g of acetic acid to prepare soap liquid. The temperature of soap liquid is controlled at 55°C. 1800g was heated to 140°C, and processed with the above soap solution in a colloid mill for 1.5min to prepare emulsified asphalt; take 5000g of cooled cationic emulsified asphalt prepared by the above method, and 30g of water reducer (amino-sulfamate polymer synthesis Resin), 45g defoamer (fatty alcohol type-polyethoxylated fatty alcohol), 90g SBR, 3600gPO52.5 cement, 1400g particle size of 0.15-0.25mm quartz sand, 1g of aluminum powder are stirred in a mortar mixer 3min to get A component. The control speed is 300rpm; the colloid mill speed is 10000rpm.

[0050] Component B: Mix 5000g of basalt with a particle size of 20-30mm, 7800g of basalt with a particle size of 10-20mm, 2200g of basalt with a particle size of 5-10mm, and 1900g of basalt with a particle ...

Embodiment 3

[0053] Component A: Select 70g of cationic emulsifier (alkyl polyamines - dimethylene amino monoethanolamine), 1250g of water, and 200g of hydrochloric acid to prepare soap liquid. The temperature of the soap liquid is controlled at 50°C. 90 1800g is heated to 135°C, and processed with the above soap in a colloid mill for 1.5min to prepare emulsified asphalt; take the cooled 5000g cationic emulsified asphalt (alkyl polyamines) prepared by the above method, 60g water reducer (naphthalene type) -β-naphthalene sulfonate formaldehyde condensate), 50g defoamer (fatty alcohol type-fatty alcohol polyoxyethylene ether), 105g water-based acrylic resin, 3600g PO32.5 cement, 1800g particle size of 0.15-0.25mm quartz Sand and 1g of calcium oxide are stirred in a mortar mixer for 3 minutes to obtain component A. The control speed is 300rpm; the colloid mill speed is 5000rpm.

[0054] Component B: Mix 5500g of basalt with a particle size of 20-30mm, 8800g of basalt with a particle size of ...

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Abstract

The invention relates to a composite cold repair material for asphalt pavement pit repair, which is prepared from a component A and a component B in a weight ratio of 1:1. The component A is prepared from the following raw materials in parts by weight: 30-50 parts of cationic emulsified asphalt, 0.5-0.7 part of water reducing agent, 0.3-0.5 part of defoaming agent, 1-3 parts of adhesive, 0-10 parts of water, 36-50 parts of cement, 10-30 parts of sand and 0.01-0.03 part of expanding agent. The component B is prepared from the following raw materials in parts by weight: 50-70 parts of basalt with the particle size of 20-30mm, 80-100 parts of basalt with the particle size of 10-20mm, 25-30 parts of basalt with the particle size of 5-10mm and 15-20 parts of basalt with the particle size of 3-5mm. The composite cold repair material does not need heating, is simple for construction, does not need well-trained personnel or special equipment, and has the advantages of small environmental pollution, low price, energy saving, environment friendliness, high environmental adaptability, short curing time, favorable compatibility with original pavement and favorable strength.

Description

technical field [0001] The invention relates to the technical field of road maintenance and repair, in particular to a method for preparing a composite cold patch for asphalt pavement pothole repair. Background technique [0002] Potholes are one of the common typical diseases of asphalt pavement, which will seriously affect the smoothness of the pavement and the comfort of driving. If it is not dealt with in time, the damage will continue to develop under the comprehensive action of traffic load, climate, water, etc. From the perspective of safety, it will pose a great threat to the personal safety of drivers and passengers; The continued development of the trough also doubles the maintenance cost. [0003] Pothole repair is mainly aimed at the repair and strengthening of pits, local network cracks, cracks and other diseases, and it can also repair local subsidence, wrapping and slip cracks. At present, there are two main processes for pothole repair: cold repair and hot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
Inventor 范维玉孙华东梁明孔祥军徐振张凌波赵品晖罗辉南国枝
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)