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A Composite Cold Patch Material for Pothole Repair on Asphalt Pavement

A technology of cold patching materials and asphalt pavement, which is applied in the fields of repairing and road maintenance, can solve the problems of poor compatibility, short lifespan, and low strength in the later stage, and achieve the effects of good compatibility, simple construction, and low environmental pollution

Inactive Publication Date: 2016-10-05
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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  • A Composite Cold Patch Material for Pothole Repair on Asphalt Pavement
  • A Composite Cold Patch Material for Pothole Repair on Asphalt Pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Component A: Take 24g of cationic emulsifier (alkyl imidazolinium salt-alkyl phosphate imidazolinium salt), 400g of water, and 50g of acetic acid to prepare a soap solution. The temperature of the soap solution is controlled at 45°C. Heat to 130°C, process 2min with soap in a colloid mill to prepare emulsified asphalt; take 1000g of cationic emulsified asphalt prepared by the above method, 18g of water reducer (naphthalene type-polymethylene naphthalene sulfonic acid), 15g of disinfectant Foaming agent (polyether type-polyether amine), 35g water-based epoxy resin, 1200g PO42.5R cement, 600g quartz sand with a particle size of 0.15-0.25mm, and 1g aluminum powder are stirred in a mortar mixer for 5 minutes to obtain Group A point. The control speed is 260rpm; the colloid mill speed is 3000rpm.

[0046] Component B: Mix 4300g of basalt with a particle size of 10-15mm, 5400g of basalt with a particle size of 5-10mm, and 1200g of basalt with a particle size of 0-3mm in a mi...

Embodiment 2

[0049]Component A: Take 32g of cationic emulsifier (alkylimidazolinium salt-2,3-dimethyl-1-p-chlorobenzenesulfonylimidazolinium salt), 400g of water, and 40g of phosphoric acid to prepare soap liquid, and control the temperature of soap liquid At 45°C, heat 600g of heavy traffic road asphalt AH-30 to 150°C, and process it with soap solution in a colloid mill for 2.5min to prepare emulsified asphalt; take 1000g of the cooled cationic emulsified asphalt prepared above, 25g of water reducing Carboxylic acid type-sodium gluconate), 20g defoamer (polyether type-polyetherimide), 36g water-based epoxy resin, 1000g PO32.5 cement, 400g quartz sand, 1g calcium aluminate sulfate in a mortar mixer Stir in medium for 5 minutes to obtain component A. The control speed is 260rpm, and the colloid mill speed is 10000rpm.

[0050] Component B: Mix 4320g of basalt with a particle size of 10-15mm, 5180g of basalt with a particle size of 5-10mm, and 1100g of basalt with a particle size of 0-3mm i...

Embodiment 3

[0053] Component A: Take 18g of cationic emulsifier (lignin-sodium lignosulfonate), 400g of water, and 45g of hydrochloric acid to prepare a soap solution. The temperature of the soap solution is controlled at 45°C. ℃, and soap solution in a colloid mill for 2 minutes to prepare emulsified asphalt; take the above-mentioned cooled cationic emulsified asphalt 1000g, 20g water reducer (aliphatic type-fatty alcohol ether sulfosuccinate disodium salt), 16g Defoamer (mineral oil type - mineral oil), 30g SBR, 1000g PO42.5R cement, 500g quartz sand, 1g aluminum powder and stir in a mortar mixer for 5min to obtain component A. The control speed is 260rpm; the colloid mill speed is 5000rpm.

[0054] Component B: Stir 4700g of basalt with a particle size of 10-15mm, 5500g of basalt with a particle size of 5-10mm, and 1000g of basalt with a particle size of 0-3mm in a mixer. Control the rotating speed at 60rpm.

[0055] When in use, mix components A and B on site at a weight ratio of 1:...

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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: 10-30 parts of cationic emulsified asphalt, 0.1-0.3 part of water reducing agent, 0.1-0.3 part of defoaming agent, 0.3-0.5 part of adhesive, 0-5 parts of water, 10-20 parts of cement, 5-15 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: 35-48 parts of basalt with the particle size of 10-15mm, 45-60 parts of basalt with the particle size of 5-10mm and 8-15 parts of basalt with the particle size of 0-3mm. 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 Patents(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)