Chemical characteristics of bio-asphalt and its rheological properties after CR/SBS composite modification

被引：53

作者：

Dong, Zejiao ^{[1
]}

Yang, Chen ^{[1
]}

Luan, Hai ^{[2
]}

Zhou, Tao ^{[1
]}

Wang, Peng ^{[3
]}

机构：

[1] Harbin Inst Technol, Sch Transportat Sci & Engn, Harbin 150090, Heilongjiang, Peoples R China

[2] Jilin Prov Transportat Planning & Design Inst, Changchun 130021, Jilin, Peoples R China

[3] Shandong Jianzhu Univ, Sch Transportat Engn, Jinan 250101, Shandong, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 200卷

基金：

中国国家自然科学基金;

关键词：

Bio-asphalt; Polymer composite modification; Chemical characteristics; Rheological properties; COMPATIBLE POLYMER MIXTURES; WASTE COOKING OIL; ALTERNATIVE BINDER; MOLECULAR-WEIGHT; TUBE MODEL; VISCOELASTICITY; PYROLYSIS; PAVEMENT;

D O I：

10.1016/j.conbuildmat.2018.12.092

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The non-renewable characteristics and growing demand for crude oil is prompting the development of alternative materials such as bio-asphalt for pavement engineering. In this study, the chemical compositions of bio-asphalt extracted from castor marked as SHB were evaluated by elemental analysis, infrared spectroscopy and molecular weight distribution analysis. Results revealed that the chemical compositions of SHB bio-asphalt were similar to those of petroleum asphalt, yet the former cannot be directly utilized in pavement construction. Therefore, crumb rubber (CR) and styrene-butadiene-styrene block copolymer (SBS) additives were incorporated into petroleum asphalt blended with bio-asphalt to prepare composite modified asphalt. The ultimate high- and low-temperature performances of the proposed composite modified asphalt indicated that the percentages of raw additive materials were 15% for SHB, 18% for CR and 2% for SBS. Rheological properties were further evaluated using master curves and Han curves, which have been found that SHB addition benefited the high- and low-temperature performances of the CR/SBS composite modified asphalt. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：46 / 54

页数：9

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