TG-2型土壤固化剂水泥石灰土的强度和稳定性试验  

Strength and Stability Test for Cement-lime Stabilized Clay with TG-2 Soil Solidifying Agent

作　　者：杨林[1] 张秉夏[1] 

机构地区：[1]东北林业大学土木工程学院,黑龙江哈尔滨150040

出　　处：《公路交通科技》2013年第9期27-32,共6页Journal of Highway and Transportation Research and Development

基　　金：黑龙江省交通运输厅科技项目(20101018)

摘　　要：为进一步了解东北季节性冰冻条件下固化剂稳定细粒土的工程特性,采用新型TG-2型液体土壤固化剂配合水泥、石灰对粘性土进行了综合加固处理。在水泥、石灰和土工程性质试验的基础上,采用正交方法进行击实试验,分别测试了加固土的无侧限抗压强度。在满足强度要求的前提下,确定了4%水泥+4%石灰+0.015%固化剂的合理配合比,并对此配合比的加固土进行了无侧限抗压强度试验、干缩试验、温缩试验和冻融循环试验。试验结果表明TG-2型固化剂可有效地提高东北地区粘性土的强度和稳定性。In order to further understand the engineering characteristics of stabilized fine grained soil with solidifying agent under the condition of seasonal freeze-up in northeastern China, a new-style TG-2 liquid soil solidifying agent is mixed with cement and lime to strengthen clay. On the basis of the engineering test of cement, lime and clay, compaction test is carried out by orthogonal method to measure the unconfined compressive strength test of the stabilized clay. With satisfying compressive strength, a reasonable mix proportion of cement （4%）, lime （4%） and solidifying agent （0. 015% ） is determined, and unconfined compressive test, desiccation shrinkage test, temperature shrinkage test and freeze-thaw cycle test are carried out on the stabilized clay with the determined mix proportion. The test result indicates that TG-2 soil solidifying agent can effectively improve the strength and stability of the clay in northeastern China.

关 键 词：道路工程 路面基层 正交试验 固化剂 无侧限抗压强度 稳定性 

分 类 号：U416.212[交通运输工程—道路与铁道工程]