方案在台州淤泥质土中的加固效果以及不同因素对于固化土强度的影响，对台州淤泥质土的固化特性进行试验研究.通过试验对淤泥质土的含水量、有机质含量、主固化剂掺量、添加剂掺入比以及龄期这5个因素进行分析. 试验结果表明淤泥质土的含水量会阻碍固化土强度的增长，主固化和龄期的增长能够有效地增强固化土的强度，有机质含量和添加剂掺入比存在一个最佳掺量. 通过对固化土无侧限压缩试验得到的应力应变曲线进行分析，提出了固化土在单轴压缩下的4个阶段.通过数据处理与分析，引入水灰比，并综合考虑有机质含量、添加剂掺入比和龄期的影响，建立了固化土强度预测模型.
关键词：淤泥质土;二灰;水灰比;强度预测模型
中图分类号：TU447 文獻标志码：A
Study on Curing Properties of Taizhou Sludge Soil
XU Riqing1，2？覮，WEN Jiayi1，WANG Xu1，2，DONG Mei1，ZHU Bingjian2，3
（1. Research Center of Coastal and Urban Geotechnical Engineering，Zhejiang University，Hangzhou 310058，China;
2. Taizhou Branch，Zhejiang-California International Nano Systems Institute，Taizhou 318000，China;
3. School of Civil Engineering & Architecture，Taizhou University，Taizhou 318000，China）
Abstract：In order to figure out the effect of curing agent in sludge soil with the fly ash and lime as the main curing agent and TZ-01 as the additive， a series of experiments were conducted to study the strength characteristics of solidified soil and the influencing factors on the strength of solidified soil. Through experiments， the initial water content， organic matter content， main curing agent content， additive incorporation ratio， and age of solidified soil were analyzed. The results showed that the initial water content of the sludge soil hindered the growth of the solidified soil. The main curing agent and age growth can effectively enhance the strength of the solidified soil， and there was an optimum blending ratio of organic matter content and additive incorporation ratio. Based on the analysis of the stress-strain curve obtained from the unconstrained compression test of solidified soil， four stages of solidified soil under uniaxial compression were proposed. By processing and analyzing data， the water-cement ratio β was introduced， the effects of organic matter content， additive incorporation ratio and age were comprehensively considered， and the solidified soil strength prediction model was established.
Key words：sludge soil;fly ash-lime;water-cement ratio;strength prediction model
滨海地区存在着大量的淤泥质土，淤泥质土具有含水量高、强度低、压缩性大的特点，是工程处理上的一个难点.在对淤泥质土进行施工前，往往需要对于淤泥质土进行预处理，使得在淤泥质土的表层形成一个硬壳层，从而能够满足工程机械的进场施工的条件. 杨福麟等[1]针对某工地新吹填软土真空预压加固工程，采用浅层加固超软土技术加固浅表层，取得了良好的效果. 闫澍旺等[2]在天津滨海新区的围海造陆工程中，采用在吹填土上吹填细砂形成硬壳层，提高地基承载力，满足真空预压施工中插板机的进场条件. 自20世纪90年代以来，淤泥质土的浅层改良技术在日本得到了快速的发展，应运而生了淤泥上履带行走式稳定土拌合法（SLM工法）[3].
推荐访问： 台州 淤泥 固化 特性 研究
