基于MSCR试验的生物沥青高温性能评价

doi:10.3969/j.issn.1000-565X.2017.11.004

华南理工大学学报(自然科学版) ›› 2017, Vol. 45 ›› Issue (11): 24-30.doi: 10.3969/j.issn.1000-565X.2017.11.004

基于MSCR试验的生物沥青高温性能评价

高俊锋¹ 汪海年¹尤占平^1,2 陈曦¹ 姜鑫¹

1．长安大学道路结构与材料交通行业重点实验室，陕西西安 710064; 2．密歇根理工大学土木工程与环境学院，美国霍顿 49931

收稿日期:2017-01-13 出版日期:2017-11-25 发布日期:2017-10-01
通信作者: 高俊锋(1988-)，男，博士生，主要从事路面材料与结构研究． E-mail:gaojunfeng@chd.edu.cn
作者简介:高俊锋(1988-)，男，博士生，主要从事路面材料与结构研究．
基金资助:
国家自然科学基金资助项目(51378074，51578075);交通运输部应用基础研究项目(2014319812180)

High-Temperature Performance Evaluation of Bio-Asphalt on the Basis of MSCR Test

GAO Jun-feng¹ WANG Hai-nian¹ YOU Zhan-ping^1,2 CHEN Xi¹ JIANG Xin¹

1.Road Structure and Materials Key Laboratory for Transportation,Chang’an University,Xi’an 710064,Shaanxi,China; 2.Department of Civil and Environmental Engineering,Michigan Technological University,Houghton 49931,USA

Received:2017-01-13 Online:2017-11-25 Published:2017-10-01
Contact: 高俊锋(1988-)，男，博士生，主要从事路面材料与结构研究． E-mail:gaojunfeng@chd.edu.cn
About author:高俊锋(1988-)，男，博士生，主要从事路面材料与结构研究．
Supported by:
Supported by the National Natural Science Foundation of China(51378074，51578075)

摘要/Abstract

摘要： 通过高温分级试验和多应力蠕变恢复试验，研究了不同生物质重油掺量及温度下生物沥青的 PG 高温分级、不可恢复蠕变柔量、蠕变恢复率和应力敏感性，对比分析了基于 AASHTO MP 19 标准的生物沥青高温性能分级，并采用车辙试验验证了生物沥青混合料的高温性能．结果表明:综合等车辙因子临界温度对生物沥青的原样沥青的等级划分效果明显;生物沥青的恢复率较基质沥青和 S100 沥青大，蠕变柔量较基质沥青和 S100 沥青小;生物沥青的不可恢复蠕变柔量和蠕变恢复率应力敏感性随生物质重油掺量的变化不呈现明显规律，但应力敏感性随温度的升高而增大;64 ℃可作为低掺量生物沥青高温分级的基准温度．

关键词: 生物沥青, 高温性能, 多应力蠕变恢复试验, 应力敏感性

Abstract: The PG high-temperature classification,unrecoverable creep compliance,creep recovery rate and stress sensitivity of the bio-asphalt with different bio-oil dosages and temperatures were investigated by a high-temperature classification test and a multiple stress creep recovery test (MSCR),and the classification of the high-temperature performance of the bio-asphalt on the basis of the AASHTO MP 19 standard was analyzed.Then,the high-tempera- ture performance of bio-asphalt mixtures was verified by a rutting test.The results show that (1) the critical tem- perature of integrated asphalt rutting factor produces a significant effect on the classification of origin bio-asphalt; (2) as compared with the matrix asphalt and S100 asphalt,the bio-asphalt achieves a higher recovery rate but with a smaller creep compliance; (3) the unrecoverable creep compliance and the stress sensitivity of the creep recovery rate show no obvious rule with the change of the bio-oil dosage,while the stress sensitivity of the bio-asphalt increa- ses with the rise of temperature; and (4) 64℃ can be used as the reference temperature for high-temperature clas- sification of low-dosage bio-asphalt.

Key words: bio-asphalt, high-temperature performance, multiple-stress creep recovery test, stress sensitivity

高俊锋汪海年尤占平陈曦姜鑫. 基于MSCR试验的生物沥青高温性能评价[J]. 华南理工大学学报(自然科学版), 2017, 45(11): 24-30.

GAO Jun-feng WANG Hai-nian YOU Zhan-ping CHEN Xi JIANG Xin. High-Temperature Performance Evaluation of Bio-Asphalt on the Basis of MSCR Test[J]. Journal of South China University of Technology(Natural Science Edition), 2017, 45(11): 24-30.

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基于MSCR试验的生物沥青高温性能评价

High-Temperature Performance Evaluation of Bio-Asphalt on the Basis of MSCR Test

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