Deep soil mixing for ground improvement of soft sensitive clay in Ontario

本研究旨在探讨深层搅拌法（DMM）应用于地基处理的可行性 安大略软敏感性粘土改良软敏感性粘土在加拿大东部是一个突出的问题。是 非常敏感，剪切强度非常低。为了在这种粘土上建造建筑，地面必须 提高在众多的地基处理技术中，数字多媒体法是一种创新技术， 通过在现场将土壤与石灰或水泥粘合剂混合来改善地面。其独特的优势包括快速 强度增加，对环境不利影响小，在大面积上成本效率高，且土壤宽 适用性由于其多功能性，它已成功地应用于世界各地，包括西方 加拿大但由于缺乏支持性的试验数据，它还没有被引入安大略。本研究 通过对以下地区的软敏感粘土进行深层搅拌进行详细的岩土工程调查， 安大略与粘结剂和进行了彻底的数值分析的DMM的优化设计， 在软质敏感粘土上建造高性价比的公路。该研究项目将使培训的高度 合格的人员。本研究的结果将有助于介绍这种具有成本效益的地基加固方法 安大略基础设施发展的技术。

This proposed research is to investigate the feasibility of applying the deep mixing method (DMM) for ground improvement of soft sensitive clay in Ontario. Soft sensitive clay is prominent in eastern Canada. It is extremely sensitive with a very low shear strength. To allow structures built on this clay, the ground has to be improved. Among many available ground improvement techniques, DMM is an innovative technique which improves the ground by in-situ mixing soil with a lime or cement binder. Its unique advantages include quick strength increase, less adverse environmental impact, high cost efficiency over a large area, and wide soil applicability. Due to its versatility, it has been successfully applied around the world, including western Canada. However, it has not been introduced to Ontario due to lack of supporting test data. This research is to address this need by conducting a detailed geotechnical investigation on deep mixing of soft sensitive clays in Ontario with a binder and performing a thorough numerical analysis on the optimum design of DMM for cost-effective highway construction on soft sensitive clay. The research project will allow the training of highly qualified personnel. The findings of this research will help to introduce this cost-effective ground improvement technique for the infrastructure development in Ontario.