路基工程Issue(4)：87-91,5.DOI:10.13379/j.issn.1003-8825.2017.04.17
千枚岩用于高速公路路基填料的适用性研究
Study on Application of Phyllite as Highway Subgrade Filler
摘要
Abstract
The physical and mechanical properties and water stability and the relationship between CBR and compaction degree of phyllite are studied.Combined with on-site phyllite rolling characteristics,the applicable layer and compaction requirements of phyllite as a highway subgrade filler are proposed.The results show that with the increase of weathering degree of phyllite,the grain density and bulk density decrease,and the water content,water absorption and porosity increase gradually,and the loading strength decreases;with the increase times of drying and watering cycle action,the amount of phyllite sample disintegration increases,the disintegration resistance index decreases;Compared with the dry phyllite,the strength of the saturated phyllite is obviously reduced,with the reduction range of 39 ％ ～64 ％;Appropriately improving the compaction standard,weakly weathered phyllite can be used as subgrade filler,intermediary weathered phyllite can be used as embankment and down roadbed.Strongly weathered phyllite is only applicable to the down embankment;3 ％～4 ％ cement modified intermediary weathered and strongly weathered phyllite is applicable to all the structural layers of subgrade.关键词
千枚岩分类/工程应用/物理特性/力学特性/水稳定性/CBRKey words
phyllite classification/engineering application/physical properties/mechanical properties/water stability/CBR分类
交通工程引用本文复制引用
卢世杰,蒋应军,杜红军,王闯..千枚岩用于高速公路路基填料的适用性研究[J].路基工程,2017,(4):87-91,5.基金项目
陕西省交通运输厅科技项目(13-02K) （13-02K）
