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周群,荣浩,吴昌霞.纤维掺量对聚酯纤维沥青混合料路用性能的影响研究[J].河北工程大学自然版,2020,37(2):18-23
纤维掺量对聚酯纤维沥青混合料路用性能的影响研究
Influence of Fiber Content on Pavement Performance of Polyester Fiber-reinforced Asphalt Mixture
投稿时间:2020-01-02  
DOI:10.3969/j.issn.1673-9469.2020.02.004
中文关键词:  聚酯纤维  沥青混合料  马歇尔试验  配合比设计
英文关键词:polyester fiber  asphalt mixture  Marshall's test  mix design
基金项目:广西重点研发计划项目(桂科AB17292035)
作者单位
周群 广西交科集团有限公司, 广西 南宁 530007 
荣浩 广西交科集团有限公司, 广西 南宁 530007 
吴昌霞 广西交科集团有限公司, 广西 南宁 530007 
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中文摘要:
      针对如何提升沥青混合料使用效果的问题,采用马歇尔试验方法,研究了不同掺量的两种纤维掺入后对马歇尔指标的影响,得出对相关指标的影响规律。结果表明:常规的混合料沥青的最优使用量与纤维的加入数量成正比关系,会随着纤维加入数量的提升而升高,但加入量超过一个门限值时,沥青的最优使用量便不再变化;加入纤维后混合料密度均有所下降,空隙率都增大,而且纤维含量越大越明显。混合料的稳定度和流值会随着掺入两种纤维后而提高,加入聚脂纤维混合料表现的增加幅度尤其明显。
英文摘要:
      Marshall Test was performed to find out how to improve the application effect of asphalt mixture. The effect of two types of fibers with different contents on Marshall Index was investigated to determine the laws of influence on relevant indexes. The results show that the optimal usage of conventional asphalt mixture is proportional to the amount of fiber added. Specifically, the optimal usage increases with the amount of fibers added. However, when the amount of fibers added exceeds one threshold, the optimal usage remains unchanged. The more the fibers are added, the more obviously the mixture density decreases and the voidage increases. The stability and flow value of mixture increases as the two types of fibers are added. In particular, the stability and flow value undergo a significant increase when the polyester fiber-reinforced mixture is added.
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