Study On Application Of Compaction Grouting In Tangjin Expressway

Grouting technology is a practical and wide application engineering technology. In this paper, according to the application of Compaction grouting method in Tangjin Expressway, analysis the compaction grouting mechanism .In a word, the main content of this paper and the results are as follows:1 .The paper summarizes the profile of grouting technique, research the historical development and current status of grouting technique and explains the trend of grouting technology.2.Analysis of the mechanism ,characteristics and function of the process of compaction grouting.3.Do laboratory testing and in-situ test to the roadbed of Tangjin Expressway after Compaction grouting method, analysis the data of the experiments and get the result that the physical and mechanical properties of soil changes after grouting.4.Observe the soil by optical instruments, like electron microscopy, research to the micro-structural changes of soil before and after grouting, to explain the mechanism of soil strength growth after grouting essentially.5.?Get the strength of the roadbed before and after grouting , analysis the practical effect of grouting from several angles to provide support to the practical application of technology in Roadworks.6. Analysis the experimental data comprehensively to validate the the applicability of compaction grouting technology in roadbed reinforcement in Tianjin.