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Ultrathin asphalt mixture based on environment-friendly rubber powder and preparation method thereof

A technology of asphalt mixture and environmentally friendly rubber, applied in the field of road engineering materials

Active Publication Date: 2020-07-07
ZHEJIANG COMM GRP DETECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there is currently an application of environmentally friendly rubber powder to asphalt mixture, because ultra-thin asphalt mixture has special requirements for asphalt, how to apply environmentally friendly rubber powder to ultra-thin asphalt mixture, so that the environmentally friendly rubber powder modified asphalt meets The performance requirements of ultra-thin asphalt mixture are still a difficult problem to be solved

Method used

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  • Ultrathin asphalt mixture based on environment-friendly rubber powder and preparation method thereof
  • Ultrathin asphalt mixture based on environment-friendly rubber powder and preparation method thereof
  • Ultrathin asphalt mixture based on environment-friendly rubber powder and preparation method thereof

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Embodiment 1

[0033] 1. Ultra-thin asphalt mixture based on environmentally friendly rubber powder

[0034] The above-mentioned ultra-thin asphalt mixture based on environmental protection rubber powder comprises the following raw materials in parts by weight:

[0035] 88.2% aggregate, 6.5% limestone powder, 0.3% basalt fiber and 5.0% environmentally friendly rubber powder modified asphalt.

[0036] Among them, the environment-friendly rubber powder modified asphalt is obtained by shearing and mixing the environment-friendly rubber powder and base asphalt at 180°C, and the ratio of environment-friendly rubber powder and base asphalt is 0.22:1. The base asphalt is Esso 70# base asphalt that meets the requirements of JTG F40-2004 "Technical Specifications for Asphalt Pavement Construction of Highway Engineering". The environmentally friendly rubber powder is produced by Jiangsu Zhonghong Environmental Protection Technology Co., Ltd. with a sulfur content of 0.35% and a carbon black content of...

Embodiment 2

[0045] The ultra-thin asphalt mixture based on the environment-friendly rubber powder of the present embodiment comprises the following raw materials in parts by weight:

[0046] 87.8% of aggregate, 6.7% of limestone powder, 0.3% of lignin fiber and 5.2% of environmentally friendly rubber powder modified asphalt.

[0047]Among them, the environment-friendly rubber powder modified asphalt is obtained by shearing and mixing the environment-friendly rubber powder and base asphalt at 180°C, and the ratio of environment-friendly rubber powder and base asphalt is 0.27:1. The base asphalt is Shell 90# base asphalt that meets the requirements of JTG F40-2004 "Technical Specifications for Asphalt Pavement Construction of Highway Engineering". The environmentally friendly rubber powder is produced by Suzhou Runjieer Environmental Protection New Material Co., Ltd., with a sulfur content of 0.41%. The carbon black content is 41%, the rubber hydrocarbon content is 39%, and the tensile stre...

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Abstract

The invention relates to an ultrathin asphalt mixture based on environment-friendly rubber powder and a preparation method thereof. The ultrathin asphalt mixture comprises the following components inparts by weight: 80-95% of aggregate, 4-10% of mineral powder, 0.1-0.6% of fibers and 4-8% of environment-friendly rubber powder modified asphalt. The grading type of the aggregate is improved AC-10,and the ratio of the environment-friendly rubber powder to the matrix asphalt in the environment-friendly rubber powder modified asphalt is 0.05-0.40. The ultrathin asphalt mixture based on the environment-friendly rubber powder prepared by the invention is excellent in comprehensive performance; the anti-rutting performance, the high-temperature performance, the water damage resistance, the mechanical property, the durability and other use performance are greatly improved, and the ultrathin asphalt mixture has the advantages of excellent low-temperature performance, high self-cohesiveness, good water seepage resistance, high cost performance, small harm to health of construction operators and high environmental friendliness. The thickness of the prepared environment-friendly rubber powderultrathin asphalt pavement can be 1.5-3.5 cm, the construction cost is remarkably reduced, the cost can be saved by 20% or above, the vehicle running noise is reduced, the cost performance is high, and the ultrathin asphalt mixture has wide market application prospects.

Description

technical field [0001] The invention relates to the field of road engineering materials, in particular to an ultra-thin asphalt mixture based on environmentally friendly rubber powder and a preparation method thereof. Background technique [0002] With the rapid development of highway construction in our country, the number of pavement road maintenance projects has gradually increased, but the maintenance funds are relatively short, which puts forward new demands for asphalt pavement maintenance technology. Preventive maintenance measures can deal with the early diseases of the pavement and increase the durability of the pavement. It is a very economical maintenance method. Ultra-thin overlay technology is a typical preventive maintenance measure. Compared with other preventive maintenance measures, this technology has good surface roughness, improved skid resistance, and can be closely combined with the original road surface to delay the occurrence of diseases. Moreover, t...

Claims

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Application Information

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IPC IPC(8): C04B26/26
CPCC04B26/26C04B2111/0075C04B18/12C04B14/28C04B16/0683C04B16/02C04B14/46C04B14/06Y02W30/91
Inventor 琚利平李佰昌陈爽方芳周炯
Owner ZHEJIANG COMM GRP DETECTION TECH CO LTD
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