Research on New Component Analysis Method for Pyrolytic Crumb Rubber Modified Asphalt

被引：0

作者：

Dong, Ruikun ^{[1
,2
]}

Yang, Jie ^{[1
,2
]}

Zhao, Mengzhen ^{[1
,2
]}

机构：

[1] Chongqing Univ, Sch Civil Engn, Minist Educ, Chongqing 400045, Peoples R China

[2] Chongqing Univ, Key Lab New Technol Construct Cities Mt Area, Minist Educ, Chongqing 400045, Peoples R China

来源：

TRANSPORTATION RESEARCH CONGRESS 2017: SUSTAINABLE, SMART, AND RESILIENT TRANSPORTATION | 2019年

基金：

中国国家自然科学基金;

关键词：

Waste crumb rubber; Modified asphalt; Pyrolysis; Component; Pyrolysis mechanism; TIRE RUBBER; BLENDS;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

On the basis of the problems in analyzing the components of pyrolytic crumb rubber modified asphalt (PRA) by the current component analysis method, a new method applicable to component analysis of PRA was proposed through material characteristics analysis of PRA and solubility test of rubber hydrocarbon. Components of PRA were divided into petroleum ether soluble fraction, toluene soluble fraction, and insoluble fraction. The matching formulas were put forward and the operation of the experiment was simplified. The new method was used to analyze the components of PRA made by pyrolysis at 250 degrees C for 0 min, 30 min, 60 min, 120 min, 240 min, and 480 min respectively. And the content of maltenes, asphaltenes, and base asphalt in PRA was obtained by the formulas. The pyrolysis mechanism of PRA was well explained by the composition change rules of PRA. The content of base asphalt in PRA increased from 70% to 91.25% at 60 min pyrolysis, and the conversion of the crumb rubber powder to the asphalt was realized.

引用

页码：189 / 196

页数：8

共 16 条

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