固化土集流面无侧限抗压强度影响因素研究  

Principal factors in unconfined compression strength of the solidified soil for the catchment area

作　　者：樊恒辉[1] 吴普特[1] 高建恩[1] 王广周[1] 孙胜利 

机构地区：[1]中国科学院教育部水土保持与生态环境研究中心 [2]海威建材厂,河南巩义451200

出　　处：《农业工程学报》2006年第9期11-15,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家"863"节水重大专项新型高效雨水集蓄与利用技术研究(2002AA2Z4051-2)

摘　　要：该文采用无侧限抗压强度作为反映指标,对影响固化土强度的剂量、龄期、密度、含水率、凝结时间和养护环境等主要因素进行研究,提出增强土壤固化剂集流面强度的措施。研究结果表明:固化剂集流面的剂量选择12%左右,养护龄期需要7 d以上,压实度控制在0.94以上。在同一密度下含水率为最优含水率的(80±5)%范围内时,固化土的强度达到最大。在混合料拌和好12 h内尽快完成施工。施工结束后,应立刻进行覆盖防蒸发处理,24 h后方可进行洒水或浸水养护。温度和湿度越高越有利于固化剂集流面强度的增长和外观的平整。Taking the uncontlned compression strength as an indicated index ,the principal factors such as dosage, aging, density, water content, the concreting time and the condition of concrete curing, which affected the solidified soil strength, and the measures to enhance the strength of the solidified soil for the catchment with soil stabilizer were analyzed. Results show that the dosage of soil stabilizer is about 12%, the aging is at least 7 d and the compactness, is controlled above 0.94. Under the same density, the strength is the greatest if the water content is in the range of 75%～85% as optimum moisture content. The mixture must be compacted in 12 hours as soon as possible. After the catchment area is constructed, the surface is covered to defend the water evaporation at once and it is not sprayed water or immersion cured until 24 hours. The strength and appearance of the catchment area with soil stabilizer are better with the higher temperature and humidity than those of lower ones.

关 键 词：土壤固化剂 无侧限抗压强度 集流面 

分 类 号：TU472.5[建筑科学—结构工程] TV223.26[建筑科学—土工工程]