[1]郑木莲,范贤鹏,刘富强,等.复配型水性环氧乳化沥青微表处耐久性[J].长安大学学报(自然科学版),2020,40(1):68-76.
 ZHENG Mu lian,FAN Xian peng,LIU Fu qiang,et al.Durability of compound waterborne epoxy emulsifiedasphalt microsurfacing[J].Journal of Chang’an University (Natural Science Edition),2020,40(1):68-76.
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复配型水性环氧乳化沥青微表处耐久性
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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1期
页码:
68-76
栏目:
道路工程
出版日期:
2020-01-15

文章信息/Info

Title:
Durability of compound waterborne epoxy emulsified
asphalt microsurfacing
作者:
郑木莲范贤鹏刘富强李洪印林小玉
1. 长安大学 特殊地区公路工程教育部重点实验室,陕西 西安 710064;
2. 齐鲁交通发展集团有限公司,山东 济南 250101
Author(s):
ZHENG Mulian1 FAN Xianpeng1 LIU Fuqiang1 LI Hongyin2 LIN Xiaoyu1
1. Key Laboratory for Special Area Highway Engineering of Ministry of Education, Changan University,
Xian 710064, Shaanxi, China; 2. Qilu Transportation Development
Group Co. Ltd., Jinan 250101, Shandong, China
关键词:
道路工程耐久性水性环氧乳化沥青加速磨耗复合改性微表处
Keywords:
road engineering durability waterborne epoxy emulsified asphalt accelerated wear composite modification microsurfacing
文献标志码:
A
摘要:
为解决沥青路面微表处早期病害多发问题,使用水性环氧树脂(waterborne epoxy resin,WER)配合丁苯橡胶(styrene butadiene rubber,SBR)对乳化沥青进行复合改性,制备复合改性水性环氧乳化沥青微表处,通过三大指标及黏附性能验证沥青改性效果。以混合料的水稳定性、耐磨耗性及抗滑性作为评价标准,分别采用长期浸水湿轮磨耗试验、多次冻融循环湿轮磨耗试验和四轮加速磨耗试验,对不同水性环氧树脂掺量下的微表处混合料的耐久性进行评价,同时与不掺加水性环氧树脂的SBR改性乳化沥青微表处进行对比。研究结果表明:在复合改性作用下,乳化沥青的高低温性能及黏附性能均得到较大提升,微表处混合料相较普通的SBR改性乳化沥青微表处表现出更为优异的耐久性能,其湿轮磨耗值(wet track abrasion test,WTAT)在长时间浸水与多次冻融循环的条件下不会出现大幅度增长,具有较好的水稳定性能;在15 000次加速磨耗过程中的耐磨耗性能可以维持在较高的水平,且抗滑性能衰减速率较SBR微表处有所下降;水性环氧树脂掺量(质量分数,下同)逐渐增加至8%的过程中,微表处的耐久性可以持续提升,即各项性能在试验过程中的衰减速率逐渐放缓,在超过8%的掺量之后,对微表处的耐久性提升不再明显,所以建议较为经济的水性环氧树脂掺量不宜超过8%。
Abstract:
In order to solve the problem of frequent early diseases on the microsurfacing of asphalt pavements, waterborne epoxy resin (WER) and styrene butadiene rubber (SBR) latex were used in the composite modification of emulsified asphalt to prepare a compositemodified waterborne epoxy emulsified asphalt microsurfacing. The asphalt was verified through three main indexes and adhesion properties. The water stability, abrasion resistance, and slip resistance of the mixture were taken as the evaluation criteria. The durability of the microsurfacing mixture under different waterborne epoxy resin contents was evaluated by the longterm immersion wet track abrasion test, multiple freezingthawing cycle wet track abrasion test (WTAT) and fourwheel accelerated abrasion test, respectively, and compared with SBR modified emulsified asphalt microsurfacing. The results show that composite modification significantly improve the highand lowtemperature performance and adhesion performance of the emulsified asphalt. The microsurfacing mixture also has better durability than ordinary SBR modified emulsified asphalt microsurfacing. The WTAT values do not increase significantly under the conditions of long immersion time and multiple freezingthawing cycles, and it has good water stability. The wear resistance can be maintained at a higher level during 15 000 times of accelerated wear, and the rate of decline of antislip performance is lower than that of SBR microsurfacing. When the waterborne epoxy resin content is increased to 8%, the durability of the composite modified microsurfacing continuously improves, the attenuation rate of various properties gradually slow down during the test. When the waterborne epoxy resin content exceed 8%, the improvement of durability at microsurface is no longer obvious, hence, the waterborne epoxy resin content should not exceed 8%.
 5 tabs, 9 figs, 27 refs.

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更新日期/Last Update: 2020-01-17