文章摘要
纤维对乳化沥青冷再生混合料路用性能的影响
Effect of fiber on pavement performance of emulsified asphalt cold recycling mixture
投稿时间:2019-08-21  修订日期:2019-10-09
DOI:
中文关键词: 垂直振动法  纤维  路用性能  冷再生混合料
英文关键词: vertical vibration method  fiber  pavement performance  cold recycled mixture
基金项目:浙江交通科技项目(2016-2-17)
作者单位E-mail
蒋应军 长安大学 公路学院 1979961993@qq.com 
王瑞祥 长安大学 公路学院  
刘鹏 长安大学 公路学院  
陈浙江 金华市公路管理局  
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中文摘要:
      采用与施工现场压实效果相关性更好的垂直振动试验方法,研究了纤维掺量以及纤维类型对乳化沥青冷再生混合料路用性能的影响。结果表明:随着纤维掺量的增加,冷再生混合料动稳定度、弯拉应变、冻融劈裂强度等各项路用性能指标均先增加而后减小。此外,与不掺加纤维冷再生混合料相比,试验选用的四种纤维对混合料水稳定性影响效果总体上均不明显;与不掺加纤维冷再生混合料相比,掺加木质素纤维的冷再生混合料高温性能最好,动稳定度可提高79%,其最佳掺量为0.4%;与不掺加纤维冷再生混合料相比,掺加聚酯纤维的冷再生混合料低温抗裂性能最好,弯拉应变可提高19%,其最佳掺量为0.6%。
英文摘要:
      The influence of fiber content and fiber type on pavement performance of cold recycled emulsified asphalt mixture was studied by vertical vibration test method which has better correlation with compaction effect in construction site. The results show that with the increase of fiber content, the dynamic stability, flexural strain, freeze-thaw splitting strength and other road performance indicators of cold recycled mixtures increase first and then decrease. In addition, compared with the cold recycling mixtures without fibers, the effects of four kinds of fibers on the water stability of the mixtures are not obvious on the whole. Compared with the cold recycling mixtures without fibers, the cold recycling mixtures with lignin fibers have the best high temperature performance. The dynamic stability can be improved by 79%, and the optimum content is 0.4%. Compared with the cold recycled mixture without fiber, the cold recycled mixture with polyester fiber has the best crack resistance at low temperature. The bending strain can be increased by 19%, and the optimum content is 0.6%.
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