粗粒硫酸盐渍土盐胀特性  

Characteristics of Salt Heaving for Coarse-Grained Sulphate Saline Soil

作　　者：董晓明[1] 谢永利[1] 李天华[2] 刘景艳[1] 

机构地区：[1]长安大学公路学院,西安710064 [2]长安大学建筑工程学院,西安710064

出　　处：《南水北调与水利科技》2011年第1期40-43,共4页South-to-North Water Transfers and Water Science & Technology

基　　金：国家西部交通建设科技项目"新疆奎屯-克拉玛依高速公路"(200331879750)

摘　　要：为了进一步研究硫酸盐渍土盐胀的主要影响因素,选用新疆奎屯-克拉玛依高速公路第6合同段路基填料的天然盐渍土进行室内冻融循环盐胀性试验,试验结果表明:硫酸盐渍土的盐胀变形与含水量及温度等有重要关系,通过采用室内冻融循环试验,对硫酸盐渍土的冻融循环盐胀性进行分析研究,为今后对粗颗粒硫酸盐渍土在路基填料等方面提供实践经验和理论依据。In order to further study the main influence factors on the salt heaving of sulphate saline soil, the natural saline soil as subgrade filler from the sixth contract section of Kuitun-Karamay freeway was chosen to take the salt heaving laboratory tests under freezing and thawing cy cles. The results show that the influences of moisture content and temperature on the salt heaving deformation of sulphate saline soil are signifi cant. The freezing and thawing cycles tests in laboratory were employed for coarse-grained sulphate saline soil and its salt heaving property was analyzed under freezing and thawing cycles, which provide the practical experience and theoretical basis for studying the coarse-grained sulphate saline soil as subgrade filler in the future.

关 键 词：硫酸盐渍土 盐胀 冻融循环 路基 

分 类 号：U416.1[交通运输工程—道路与铁道工程]