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Micro-surfacing mixture

A technology of micro-surfacing mixtures and mixtures, applied in the field of micro-surfacing mixtures and preparations, can solve problems such as poor low-temperature crack resistance and unsatisfactory anti-rutting ability, and achieve the effect of improving high-temperature stability

Inactive Publication Date: 2013-05-01
重庆市智翔铺道技术工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new composition helps improve the durability and performance of existing mixtures used for highway construction by adding small particles that are mixed into them before curing or during manufacturing process. These tiny particles help reduce cracks caused from temperature changes while still maintain their effectiveness against tire damage.

Problems solved by technology

This patented describes how new types of materials called polymer modifiers or plastomizers were introduced during the study phase of improving pavements by creating better ways to prevent slippage damage caused by vehicles like cars tires. These improvements resulted in improved vehicle safety and reduced environmental impact compared to traditional techniques such as bitumen patching.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0029] A kind of micro-surfacing mixture is prepared according to the following steps:

[0030]1. Preparation of high-elastic modified emulsified asphalt: SK70# base asphalt accounted for 65%, cationic slow-cracking and fast-setting emulsifier MQK-1D accounted for 1.8%, SBR latex accounted for 3.5%, SBS latex accounted for 3.5%, high-elasticity 1 No. modifier accounts for 1.75%, water accounts for 24%, stabilizer calcium chloride accounts for 0.15%, and polyvinyl alcohol accounts for 0.3%, calculated by mass percentage. Put the above-mentioned SK70# base asphalt on an electric donkey and heat it to 135-140°C; on the other hand, heat the water to 55-65°C, add the above-mentioned emulsifier and stabilizer to the water to obtain emulsifier soap, and put it in a water bath Keep warm at about 55-65°C, adjust the pH of the emulsifier soap to 1.5-2.5 with 34-36% hydrochloric acid solution in volume percentage; quickly pour the above-mentioned emulsifier soap into the emulsifier collo...

Embodiment 2

[0058] A kind of micro-surfacing mixture is prepared according to the following steps:

[0059] 1. Preparation of high-elastic modified emulsified asphalt: SK70# base asphalt accounted for 62%, cationic slow-cracking and fast-setting emulsifier kzw-801U accounted for 2.0%, SBR latex accounted for 3.0%, SBS latex accounted for 5.0%, high-elastic No. 1 Modifier accounts for 1.0%, water accounts for 26.5%, and stabilizer calcium chloride accounts for 0.5%, calculated by mass percentage. Put the above-mentioned SK70# base asphalt on an electric donkey and heat it to 135-140°C; on the other hand, heat the water to 55-65°C, add the above-mentioned emulsifier and stabilizer to the water to obtain emulsifier soap, and put it in a water bath Keep warm at about 55-65°C, and adjust the pH of the emulsifier soap to 2.5-3.5 with 34-36% hydrochloric acid solution in volume percentage. Pour the above heat-preserved emulsifier soap liquid into the emulsifier colloid mill (Germany, model, AF ...

Embodiment 3

[0062] A kind of micro-surfacing mixture is prepared according to the following steps:

[0063] 1. Preparation of high-elastic modified emulsified asphalt: SK70# base asphalt accounted for 68%, cationic slow-cracking and fast-setting emulsifier JY-5R accounted for 1.6%, SBR latex accounted for 3.0%, SBS latex accounted for 3.0%, high-elastic No. 1 Modifier accounted for 2.0%, water accounted for 22%, stabilizer polyacrylamide accounted for 0.4%, calculated by mass percentage; put the above-mentioned SK70# base asphalt on an electric donkey and heat it to 135-140°C; on the other hand, put Heat the water to 55-65°C, add the above-mentioned emulsifier and stabilizer to the water to obtain an emulsifier soap, keep the water bath at about 55-65°C, and use 34-36 volume percent of the emulsifier soap % hydrochloric acid solution to adjust the pH to 1.5-2.5; quickly pour the above-mentioned emulsifier soap into the emulsifier colloid mill (Germany, model, AF 90S / 2H-12) and start the m...

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Abstract

A micro-surfacing mixture is formed by mixing high-elastic modified emulsified asphalt, external additive, mixture and water, wherein the high-elastic modified emulsified asphalt is prepared by mainly taking SK No. 70 matrix asphalt, cation asphalt emulsifier, a modifier and water as raw materials, and the modifier is composed of SBR rubber latex, SBS rubber latex, and high-elastic No. 1 modifier. The external additive is coagulant or retarder. The mixture comprises aggregate and padding, and MS-3 or MS-2 mixture is selected. When the micro-surfacing mixture provided by the invention is paved on an asphalt road to repair the road, the problems that the existing micro-surfacing mixture has poorer stability at high temperature and poorer anti-cracking performance at low temperature, and poor anti-track performance when in use are overcome. According to the invention, the stability at high temperature and the anti-cracking performance at low temperature of the micro-surfacing mixture are effectively improved, so that the micro-surfacing mixture can better adapt to repair of steel deck bituminous concrete preventive maintenance top facing with large deformation and track.

Description

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Claims

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Application Information

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Owner 重庆市智翔铺道技术工程有限公司
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