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The Physical Properties Variation of Grout Materials and Improvement of Grouting Effects on Application of High Performance Injection Equipment  

천병식 (한양대학교 공과대학 토목공학과)
김진춘 (㈜한국지오텍)
김백영 (한양대학교 대학원 토목공학과)
Publication Information
Journal of the Korean Geotechnical Society / v.19, no.4, 2003 , pp. 179-190 More about this Journal
Abstract
The grout based on solution type makes it difficult to get the improvement of ground strength and the effefct of water curtain because it has lower strength and durability than suspension type. Nowadays, the technology of particle acceleration, that enhance the material permeability, such as grout based on solution type, and inexpensive grout, is being required. For these reasons, in this study, using wet milling system, we evaluated physical properties of manufactured factors such as water-cement ratio of particles before being milled, optimum milling capacity by controlling milling time and rpm, viscosity of materials, permeation coefficient, and unconfined compressive strength. Also, using micro wet milling apparatus which could manufacture ordinary Portland cement and high speed shear mix which could forcefully separate conglomerate particles in situ, we performed electrical resistivity investigation and falling head permeability tests to analyze differences of grouting effects. From these results, we found that the permeability of the applied equipment was much superior, and in the case of using high speed shear mixer, particles of grout material were well separated.
Keywords
High speed shear mix; Micro wet milling; Optimum milling capacity;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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