合肥滨湖新区膨胀土石灰改性室内试验研究  

An Experimental Study on Lime Modification of the Expansive Soil in Hefei Binhu Development Area

作　　者：宋亚[1] 方诗圣[1] 梁昌望[2] 许书萍 

机构地区：[1]合肥工业大学,安徽合肥230009 [2]合肥学院,安徽合肥230022 [3]合肥市政工程管理处,安徽合肥230009

出　　处：《安徽建筑》2008年第2期129-130,共2页Anhui Architecture

基　　金：安徽省高校省级自然科学研究项目(KJ2007B353ZC)

摘　　要：针对合肥滨湖新区膨胀土及其石灰改性土,进行石灰改良的击实和无侧限的室内试验。试验结果表明:滨湖地区膨胀土具有较强的吸水膨胀软化特性,无侧限抗压强度值低于1MPa,不能满足路基的强度要求,需要改性。经过改性,最佳含水率大幅度提高,并提高了土体的抗压强度,满足路基强度要求。Compaction tests and unconfined compression tests of the expansive soil modified by lime are made in the laboratory, The tests show that the expansive soil in Binghu Development Area will expand and intenerate easily when sop up; the value of unconfined compression of the expansive soil is under 1 MPa and need to be modified in order to meet the strength need of roadbed, The optimum water content has been improved marginally and the compressive strength of the expansive soil modified by lime increased.

关 键 词：膨胀土 石灰改良 掺灰率 

分 类 号：TU411.1[建筑科学—岩土工程]