Assessment of Unconfined Compressive Strength of Cement Stabilized Marine Clay
Assessment of Unconfined Compressive Strength of Cement Stabilized Marine Clay
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DOI：
10.1080/10641190801937916
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发表时间：
2008-04
影响因子：
2.2
通讯作者：
S. Liu;D. W. Zhang;Z. B. Liu;Y. Deng
中科院分区：
文献类型：
--
作者：
S. Liu;D. W. Zhang;Z. B. Liu;Y. Deng
本文从两个方面对深层搅拌法进行了探讨，即干式喷射搅拌法(DJM)与水泥深层搅拌法(CDM)强度增益的差异，以及水泥稳定海相粘土无侧限抗压强度的预测。本文第一部分重点分析了DJM和CDM在强度增益上的差异，并对DJM和CDM的选择提出了指导意见。通过对室内和现场试验数据的统计分析，提出了含水率的指标，即土壤含水率与液限的比率，作为选择粉喷剂或清洁发展机制的指导。根据室内试验数据，建立了水泥稳定海相粘土强度增长与相关变量之间的数学模型。为了解释水泥土的试验数据，提出了一种新的简单指标--总水灰比，即干状态下水泥土中的水含量与水泥质量的比值。然后用其他不同研究人员发布的可用测试数据验证了所提出的方法。
Two aspects of deep mixing method, the difference relating strength gain in dry jet mixing (DJM, reagent powder introduced into the ground) and cement deep mixing (CDM, reagent slurry introduced into the ground), and prediction of unconfined compressive strength of cement stabilized marine clay, are discussed in this paper. The first part of this paper concentrates on the difference between DJM and CDM on strength gain, and suggests a guideline for DJM and CDM selection. An indicator in terms of water content ratio, which is defined as the ratio of water content to the liquid limit of the soil, is presented by statistical analysis from the laboratory and field test data as a guideline for the selection of DJM or CDM. Based on the laboratory test data, a mathematical model relating strength gain of cement stabilized marine clay to related variables is developed. A new simple index designated as total water-cement ratio, which is defined as the ratio of water weight in the soil-cement to the weight of cement in dry state, is proposed for interpretation of test data of soil-cement. The proposed method is then verified with available test data published by other different researchers.