石灰粉煤灰加纤维稳定风积沙路用性能研究  

Study on Road-used Performance for stabilizing Aeolian Sand by Adding Fiber into Lime Flyash

作　　者：胡玉娇[1] 尚淑萍[1] 石红鸽 张景焘[1] 杨鹏[1] 

机构地区：[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710070

出　　处：《水利与建筑工程学报》2014年第2期136-139,192,共5页Journal of Water Resources and Architectural Engineering

基　　金：交通部科技项目(2008353361420)

摘　　要：为了更好地利用石灰粉煤灰稳定风积沙填筑沙漠地区高速公路底基层,研究了石灰粉煤灰稳定风积沙作为底基层材料的性能。聚丙烯纤维作为外加材料加入石灰粉煤灰稳定风积沙中(充分利用纤维的韧性和抗拉强度来增加混合料的强度和抗拉能力)进行路用性能试验。试验结果表明:合适长度,一定量纤维的掺入有利于提高二灰稳定风积沙的抗拉性能及抗收缩性能,从而为工程实践提供一定的依据。In order to better use lime flyash to stabilize the subbase of the express highway in the desert area filling with aeolian sand ,the properties for using the lime flyash to be the subbase material are studied here ,and the road-used per-formance tests for adding polypropylene fiber into the lime flyash as the extra material are conducted （fully using the fiber’ s toughness and tensile strength to increase the mixing material’s strength and tensile capacity ） .The test results show that the appropriate length and a certain amount of the fiber could help to improve the lime flyash’s tensile properties and anti-shrinkage properties in stabilizing the aeolian sand ,so as to provide a certain basis for engineering practices .

关 键 词：风积沙 聚丙烯纤维 石灰粉煤灰 抗拉性能 抗收缩性能 

分 类 号：U416.166[交通运输工程—道路与铁道工程]