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Analysis of strength development in deep mixing: a field study

机译：深层搅拌强度发展分析：现场研究

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Soft soil deposits (natural or reclaimed land in coastal regions) generally exhibit low shear strength and high compressibility. The in situ deep mixing technique to form composite soft ground has been an effective means of ground improvement, adopted extensively in Japan. This paper deals with a field investigation of the effect of various parameters in in situ mixing: installation rate, which considers penetration and withdrawal during mixing; speed of rotation of mixing wing; and cement content and water/cement ratio in the slurry used. In order to have close control over these installation parameters a laboratory model column study has also been undertaken. The findings from both investigations have been integrated with earlier basic laboratory studies on induced cementation of cement-admixed clays. A practical method is suggested for arriving at different parameters in the installation of columnar inclusion to produce composite ground of the required average strength.
机译：软土沉积物（沿海地区的天然或开垦土地）通常显示出低剪切强度和高可压缩性。原位深层搅拌技术形成复合软土地基是改善地面质量的有效方法，在日本已广泛采用。本文对现场参数混合中各种参数的影响进行了现场调查：安装速率，它考虑了混合过程中的渗透和排出；搅拌翼的旋转速度；以及所用浆料中的水泥含量和水灰比。为了对这些安装参数进行严格控制，还进行了实验室模型柱研究。两次调查的结果已与早期的基础实验室研究相结合，这些研究涉及水泥掺和黏土的诱导胶结作用。提出了一种实用的方法来确定圆柱状夹杂物的安装中的不同参数，以产生所需平均强度的复合地面。

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