Influence of Compaction Grout Rheology on In Situ Densification

压实灌浆流变学对原位致密化的影响

• 批准号: 9414543
• 负责人: Roy Borden
• 金额: $ 21.21万
• 依托单位: North Carolina State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-01-01 至 1998-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9414543&HistoricalAwards=false
• 关键词: Influence; Compaction; Grout; Rheology; Situ

9414543 Borden Compaction grouting is an important tool both for pre- construction ground improvement and post-construction remediation of projects in geomaterials, including tunneling, trenching, underpinning and lifeline engineering under natural hazard conditions. Although the general methodology is widely used, the methodology is empirical and basic mechanics and processes are not well understood. This research has the following objectives: 1) to develop a model to predict in situ injection geometric relationships; 2) to develop an appropriate test which can be used for the design of a compaction grouting operation; 3) to verify the model and test(s) in laboratory and full-scale field injection experiments. The result of this research will be a verified model and test procedures which will permit optimized and reliable design of soil and site improvement by compaction grouting.

自然灾害条件下的隧道、挖沟、支护、生命线工程等岩土工程中，压密注浆是施工前地基改善和施工后修复的重要工具。虽然一般的方法被广泛使用，但这种方法是经验的，基本的力学和过程没有得到很好的理解。本研究的目的如下：1)建立预测原位注入几何关系的模型；2)制定适当的试验方法，可用于压密注浆作业的设计；3)在实验室和全尺寸现场注射实验中验证模型和测试。这项研究的结果将是一个经过验证的模型和测试程序，这将允许通过压实灌浆对土壤和场地进行优化和可靠的设计。