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袁冻雷

（河南交通投资集团有限公司，河南 郑州 450000）

摘 要：通过将不同掺量的玄武岩纤维与聚酯纤维掺入透水沥青混合料中进行改性，采用室内冻融劈裂试验、浸水马歇尔试验及浸水飞散试验，系统考察了纤维类型及掺量对透水沥青混合料水稳定性的影响规律，结果表明：1）随着BF、PF纤维掺量的增加，透水沥青混合料的劈裂强度、稳定度、冻融劈裂强度比及浸水残留稳定度大致均呈先增大后减小变化，而浸水分散损失则随之呈先减小后增大变化；2）适量BF、PF纤维的掺入能起到良好的加筋分散作用，有利于沥青混合料空间结构稳定，因此能改善透水沥青混合料的水稳定性，BF纤维和PF纤维的最宜掺量分别为0.4%和0.2%；3）BF纤维能够显著提高透水沥青混合料的冻融劈裂强度比，而PF纤维能够显著提高透水沥青混合料的浸水残留稳定度及浸水飞散损失，故BF纤维适用于北方季冻地区，而PF纤维则更适用于南方多雨地区。

关键词：透水沥青混合料；玄武岩纤维；聚酯纤维；水稳定性

中图分类号：U414           

文献标志码：A       

文章编号：1005-8249（2024）01-0052-05

DOI：10.19860/j.cnki.issn1005-8249.2024.01.010

 

YUAN Donglei

(Henan Transportation Investment Group Co., Ltd., Zhengzhou 450000,China)

Abstract: By adding basalt fiber and polyester fiber with different content into permeable asphalt mixture for modification, indoor freeze-thaw splitting test, immersion Marshall test and immersion dispersion test are used to systematically investigate the influence of fiber type and content on water stability of permeable asphalt mixture. The results show that:With the increase of BF and PF fiber content, the splitting strength, stability the freeze-thaw splitting strength ratio and the immersion residual stability increased first and then decreased, while the immersion dispersion loss decreased first and then increased;  The proper amount of BF and PF fibers can play a good role in reinforcement and dispersion, which is conducive to the stability of the spatial structure of asphalt mixture. Therefore, it can improve the water stability of permeable asphalt mixture. The optimal amount of BF fiber and PF fiber is 0.4% and 0.2% respectively;  BF fiber can significantly improve the freeze-thaw splitting strength ratio of permeable asphalt mixture, while PF fiber can significantly improve the immersion residual stability and immersion dispersion loss of permeable asphalt mixture. Therefore, BF fiber is suitable for the northern seasonal frozen areas, while PF fiber is more suitable for the southern rainy areas.

Keywords: permeable asphalt mixture; basalt fiber; polyester fiber; water stability

 

 

 

 

作者简介：袁冻雷（1973-），男，硕士，高级工程师，主要研究方向：道路与桥梁工程。

收稿日期：2023-11-09