疏浚淤泥的固化试验研究  

Experimental study on stabilization of dredged silts

作　　者：邵玉芳[1] 龚晓南[2] 郑尔康[3] 刘增永 

机构地区：[1]浙江大学生物系统工程系,杭州310029 [2]浙江大学土木工程学系,杭州310027 [3]铁道部第四勘察设计院杭州分院,杭州310017 [4]浙江省绍兴市公路管理处,绍兴312000

出　　处：《农业工程学报》2007年第9期191-194,共4页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金资助项目(50678158))

摘　　要：采用一种成分可调的水泥系土壤固化剂对太湖清淤工程的3种代表性淤泥质土(HH-4、HH-10、LM-2)进行了固化试验,以研究太湖淤泥固化后用于路基填筑的可行性,确定固化剂各组分的质量分数,掺入固化剂的最佳质量分数以及固化土的强度变化特性。结果表明:当固化剂质量分数为6%时,3种固化土均能满足路堤填料的规范要求,但加固HH-10土样时,需要提高固化剂中A、D、F组分的质量分数。由于土样颗粒级配和化学成分的不同,HH-4固化土具有较高的早期强度,LM-2固化土具有较高的后期强度。疏浚淤泥固化并用于路基填筑,避免了淤泥的长期占地堆放,既减少了环境污染,又保护了土地资源,经济和社会效益显著。Three typical kinds of dredged silts from Taihu Lake, namely HH-4, HH-10, LM-2, were stabilized by a series of cementatory soil stabilizer with adjustable ingredients. Experiments were conducted to confirm the feasibility of using the stabilized-soil as roadbase filling, and determine the content of main ingredients and optimum mixing ratio of the stabilizer and engineering properties of the stabilized-soils. Results show that the stabilized-soil can be used as roadbase filling while the mixing ratio is above 6%, but as for HH-10, the A, D, F ingredients of the stabilizer should be increased. Because of the grain size and oxides content of the soils, HH-4 stabilized-soil has a higher short-term strength and LM-2 stabilized-soil has a higher long-term strength. Application of the stabilized-silts to roadbase construction can not only prevent pollution from the dredged silts, but also save land resources, thus brings enormous benefits to the economy and society.

关 键 词：土壤固化剂 疏浚淤泥 路基 击实试验 无侧限抗压强度试验 

分 类 号：TU472.5[建筑科学—结构工程]