长沙理工大学学报(自然科学版)
沥青路面低温型灌缝胶制备及性能研究
作者:
作者单位:

(1.长沙理工大学 交通运输工程学院,湖南 长沙 410114;2.广西新发展交通集团有限公司,广西 南宁 530022)

作者简介:

韦慧(1984—)(ORCID:0000?0002?2462?8180),女,副教授,主要从事道路养护工程及公路无损检测与评价技术方面的研究。E?mail:wh@csust.edu.cn

通讯作者:

韦慧(1984—)(ORCID:0000?0002?2462?8180),女,副教授,主要从事道路养护工程及公路无损检测与评价技术方面的研究。E?mail:wh@csust.edu.cn

中图分类号:

U418

基金项目:

湖南省自然科学基金资助项目(2020JJ5586);湖南省教育厅优秀青年项目(20B039)


Research on preparation and performance of low⁃temperature asphalt pavement of sealants and fillers
Author:
Affiliation:

(1. School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha 410114, China;2. Guangxi Xinfazhan Communication Group Co., Ltd., Nanning 530022, China)

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    摘要:

    【目的】研究低温型灌缝胶各添加剂的最佳掺量,有效延长道路使用寿命。【方法】在改进灌缝胶制备工艺的基础上,以不同掺量的灌缝胶为研究对象,利用主成分分析法进行掺量比选,通过低温弯曲梁流变(BBR)试验、线性振幅扫描(LAS)试验及黏度试验分别评价灌缝胶的流变性能、疲劳性能和黏聚性能,以获得低温型灌缝胶各添加剂的最佳掺量。【结果】低温型灌缝胶中苯乙烯-丁二烯嵌段共聚物(SBS)、增容剂、增塑剂、废胶粉、稳定剂及增黏剂等添加剂的最佳掺量分别为:6%、2%、2%、12%、14%及7%;常规性能指标按重要性从高到低排序依次为:流动值、锥入度、软化点、延度、弹性恢复率;最佳掺量的灌缝胶疲劳寿命为2.81×109次。【结论】添加剂掺量与疲劳寿命并无一致性,研究成果可为低温型灌缝胶添加剂掺量及性能研究提供参考。

    Abstract:

    [Purposes] This paper aims to study the optimum content of each additive of low?temperature sealants and fillers so as to prolong the service life of road effectively. [Methods] Based on improving the preparation process of seam filling glue, different content of sealants and fillings was incorporated and then principal component analysis method was used to compare the result. The rheological, fatigue and cohesive properties of the sealant were evaluated by low?temperature bending beam rheological test, linear amplitude scanning test and viscosity test, respectively. Sebsequently, the optimum content of each additive of low?temperature sealant was obtained. [Findings] The optimum content of each additive of low?temperature sealant was 6% styrene?butadiene block copolymer (SBS),2% compatibilizer,2% plasticizer,12% waste rubber powder,14% stabilizer and 7% tackifier. The conventional performance indicators were arranged in descending order of importance as follows: flow value, cone penetration, softening point, ductility, and elastic recovery rate. The fatigue life of the optimal amount of sealant and filling was 2.81×109 times. [Conclusions] There was no consistency between additive content and fatigue life. The research results could provide a reference for studying additive content and performance of low?temperature sealants and fills.

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韦慧,戴吟晗,张虎,等.沥青路面低温型灌缝胶制备及性能研究[J].长沙理工大学学报(自然科学版),2022,19(4):152-160.
WEI Hui, DAI Yinhan, ZHANG Hu, et al. Research on preparation and performance of low⁃temperature asphalt pavement of sealants and fillers[J]. Journal of Changsha University of Science & Technology (Natural Science),2022,19(4):152-160.

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  • 在线发布日期: 2023-01-16
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