Exploratory Study of Lime-Slurry Conditioning for Drilled Shafts

9615020城市基础设施修复的钻孔基础设计要求大幅降低安装它们的岩土材料的强度，这导致相对较高的建筑成本。随着对基础设施管理的预算限制日益增加，迫切需要制定直接和实用的方法来恢复岩土材料的实力，以降低建设成本。这项研究探索了一种投机但具有潜在经济意义的方法，通过使用石灰泥浆调节来提高钻井井筒的侧向剪切能力和可预测性。特别是，该项目通过一项涉及自然土壤的实验室和现场测试的协调研究，解决了土壤/混凝土界面的调节问题。这项研究将由休斯顿大学和土耳其博加齐奇大学共同努力，并得到国际基础钻探协会和国家石灰协会的实物捐助的支持。***

9615020 Design of drilled foundations for urban infrastructure rehabilitation requires that a significant reduction be taken in the strength of the geomaterials into which they are installed, which leads to relatively high construction costs. With increasing budgetary constraints on infrastructure management, there is an immediate need to develop straightforward and practical means to restore the strength of geomaterial to reduce the cost of construction. This research explores a speculative but potentially economically important method to enhance the capacity and predictability of side shear in drilled shafts by the use of lime slurry conditioning. In particular, this project addresses the conditioning of the soil/concrete interface through a coordinated study involving both laboratory and field tests in natural soil. This study will involve the joint efforts of both the University of Houston and Bogazici University in Turkey, and is supported by contributions in kind from both the International Association of Foundation Drilling and the National Lime Association. ***