[1]黄卫东,莫定成,吕泉,等.基于汉堡车辙试验的TB复合改性沥青混合料高温性能评价[J].长安大学学报(自然科学版),2020,40(6):12-21.
　HUANG Wei dong,MO Ding cheng,LYU Quan,et al.High temperature performance evaluation of TB composite modifiedasphalt mixture based on Hamburg wheel tracking test[J].Journal of Chang’an University (Natural Science Edition),2020,40(6):12-21.
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基于汉堡车辙试验的TB复合改性沥青混合料高温性能评价()
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长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第40卷
期数:
2020年6期
页码:
12-21
栏目:
道路工程
出版日期:
2020-11-15

文章信息/Info

Title:
High temperature performance evaluation of TB composite modifiedasphalt mixture based on Hamburg wheel tracking test
作者:
黄卫东; 莫定成; 吕泉; 郑茂; 周璐
（1. 同济大学 交通运输工程学院，上海 201804； 2. 四川交投建设工程股份有限公司，四川 成都 610041）
Author(s):
HUANG Weidong1;  MO Dingcheng1;  LYU Quan1;  ZHENG Mao2;  ZHOU Lu1
(1. College of Traffic and Transportation Engineering, Tongji University, Shanghai 201804, China;2. Sichuan Jiao Tou Construction Engineering CO., LTD, Chengdu 610041, Sichuan, China)
关键词:
道路工程; 高温性能; 汉堡车辙试验; TB复合改性沥青混合料; SBS; 岩沥青; 多聚磷酸
Keywords:
road engineering;  high temperature performance;  HWTD;  TB composite modified asphalt mixture;  SBS;  rock asphalt;  PPA
文献标志码:
A
摘要:
为了模拟terminal blend 胶粉改性沥青（TB沥青）及其复合改性沥青混合料在高温多雨条件下的抗车辙性能，通过汉堡车辙试验分析了不同胶粉和改性剂掺量下的TB+线形SBS、TB+岩沥青、TB+线形SBS+岩沥青、TB+线形SBS+多聚磷酸（PPA）这4组TB复合改性沥青混合料在水热耦合作用下的高温性能，对其汉堡车辙试验曲线、高温性能指标（抗蠕变速率、总变形速率）进行了分析评价。研究结果表明：TB沥青混合料在水热耦合作用下的高温性能随橡胶粉掺量的增加而降低，但是SBS、岩沥青的加入则会完全改变这种趋势；当橡胶粉掺量（质量分数，下同）为10%~20%，SBS掺量为1%~3%，岩沥青掺量为2%~8%时，总体上TB+线形SBS、TB+岩沥青〖JP2〗这2种改性沥青混合料的高温性能将随胶粉掺量、SBS和岩沥青的掺量的增加而增强，20% TB+〖JP〗3%线形SBS与20%TB+8%岩沥青这2种改性沥青混合料的高温性能均好于4.5%掺量的SBS改性沥青混合料的高温性能；岩沥青和PPA均能提高10%TB+3%线形SBS改性沥青混合料在水热耦合作用下的高温性能，其中PPA的改善效果更明显，0.4%掺量的PPA的改善效果优于4%掺量的岩沥青；10%TB+3%线形SBS+0.4%PPA的TB复合胶粉改性沥青混合料的高温抗车辙性能比10%TB沥青提升了356.1%，故推荐采用TB+线形SBS+PPA的改性方案。
Abstract:
In order to simulate the rutting resistance of terminal blend crumb rubber modified asphalt (TB asphalt) and its composite modified asphalt mixture under high temperature and rainy conditions, the high temperature performance of TB+linear SBS, TB+rock asphalt, TB+linear SBS+rock asphalt and TB+linear SBS+polyphosphate (PPA) asphalt mixture with different dosage of crumb rubber and modifier were analyzed by Hamburg wheel tracking test (HWTD), under the combined action of water and heat. And HWTD rutting test curve, high temperature performance evaluation index (creep resistance rate, deformation rate) were analyzed. The results show that the high temperature performance of TB asphalt mixture under the combined condition of water and heat is impaired with the increase of crumb rubber content, while the addition of SBS and rock asphalt will completely change this trend. When the content of crumb rubber is 10% to 20% (mass fraction, the same as below), the content of SBS is 1% to 3%, and the content of rock asphalt is 2% to 8%, in general the hightemperature performance of TB+ rock asphalt, TB+ linear SBS asphalt mixture is improved with the increase of the content of crumb rubber, rock asphalt and SBS, besides the high temperature performance of 20%TB+3% linear SBS and 20%TB+8% rock asphalt is better than that of 4.5% SBS modified asphalt mixture. Rock asphalt and PPA can both promote the high temperature performance of 10%TB+3% linear SBS modified asphalt mixture under the condition of water and heat, and the improvement effect of PPA is more obvious, the improvement effect of 0.4% PPA is better than that of 4% rock asphalt. The rutting resistance performance of 10% TB+3% linear SBS+0.4% 〖JP2〗PPA composite modified asphalt mixture is 356.1% higher than that of 10% TB asphalt, consequently TB+ linear SBS+PPA modification scheme is recommended. 3 tabs, 7 figs, 30 refs.

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更新日期/Last Update: 2020-12-17