Exploratory Study of Lime-Slurry Conditioning for Drilled Shafts

钻孔竖井石灰浆调节的探索性研究

• 批准号: 9615020
• 负责人: Michael O'Neill
• 金额: $ 4.99万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-15 至 1998-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9615020&HistoricalAwards=false
• 关键词: Exploratory; Study; Lime; Slurry; Conditioning

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. ***

9615020城市基础设施改造钻孔基础的设计，要求安装钻孔基础的岩土材料强度大幅度降低，施工成本相对较高。随着基础设施管理的预算日益紧张，迫切需要发展简单实用的方法来恢复岩土材料的强度，以降低建筑成本。本研究探索了一种推测性的但具有潜在经济意义的方法，通过使用石灰浆调节来提高钻孔井侧剪的能力和可预测性。特别是，该项目通过在自然土壤中进行实验室和现场试验的协调研究，解决了土壤/混凝土界面的调节问题。这项研究将涉及休斯顿大学和土耳其Bogazici大学的共同努力，并得到国际基础钻井协会和国家石灰协会实物捐助的支持。＊＊＊