石灰与麦秸秆加筋固化滨海盐渍土的强度增长分析  

Analysis of Strength Increasing of Solidified Lime-Saline Soil by Wheat Straw

作　　者：张午斌[1] 柴寿喜[1] 余沛[1] 

机构地区：[1]天津城市建设学院天津市软土特性与工程环境重点实验室,天津300384

出　　处：《天津城市建设学院学报》2010年第4期233-236,共4页Journal of Tianjin Institute of Urban Construction

基　　金：国家自然科学基金(40772166);天津市自然科学基金(07JCYBJC12900)

摘　　要：滨海盐渍土易于吸湿软化,强度较低,将滨海盐渍土资源化,改良用作公路路基填料已经成为重要的岩土工程问题.笔者提出使用麦秸秆与石灰加筋固化滨海盐渍土,并分别从石灰固化、压密固结原理、加筋处理、密度、围压、颗粒级配等方面,对麦秸秆与石灰加筋固化滨海盐渍土的强度增长机制进行分析.结果表明:麦秸秆与石灰加筋固化滨海盐渍土,利用石灰土的良好颗粒级配与麦秸秆对石灰土的有效约束,通过压实提高土密度、增大麦秸秆与石灰土间的相互作用,改善滨海盐渍土的强度与整体稳定性.Owing to some problems of saline soil in inshore such as softening,lower strength,etc.,the saline soil in inshore is utilized as resources by means of improving saline soil in inshore for highway embankment fillings.Solidifying saline soil in inshore by using wheat straw and lime is put forward in this paper,meanwhile the strength increasing mechanism of solidifying lime-saline soil by using wheat straw and lime is analyzed respectively from the aspects of lime stabilization principle,loading consolidation principle,reinforcement treatment,as well as the point of views on density,confining pressure,particle gradation.The results show that the strength and stability of saline soil in inshore is effectively improved while it is solidified by wheat straw and lime which respectively possesses effective steric constraints and good lime-soil particle gradation,and the interaction between wheat straw and lime-soil is greatly increased by increasing density of soil through compaction.

关 键 词：滨海盐渍土 麦秸秆 加筋 石灰固化土 

分 类 号：TU448[建筑科学—岩土工程]