The Study of Permeation Grouting
碩士 === 國立臺北科技大學 === 土木與防災研究所 === 96 === This study establishes the facility of calibration chamber to perform the permeation and hydro-fracture grouting tests. Bleeding tests were conducted on the cement grout to find the suitable W/C ratio and bentonite content for grouting test. The poorly graded...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2008
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| Online Access: | http://ndltd.ncl.edu.tw/handle/75zxuw |
| Summary: | 碩士 === 國立臺北科技大學 === 土木與防災研究所 === 96 === This study establishes the facility of calibration chamber to perform the permeation and hydro-fracture grouting tests. Bleeding tests were conducted on the cement grout to find the suitable W/C ratio and bentonite content for grouting test.
The poorly graded sand (SP) was rained into the calibration chamber to prepare a 45 cm diameter and 50 cm height specimen. A series of confining pressure and back pressure of 3.55 kg/cm2 and 3.5 kg/cm2 were used to saturate the specimen. Then two overburden pressures of 0.5 kg/cm2 and 1 kg/cm2 were applied to the specimen in the chamber before the water injection and the grouting test under constant injection rates were conducted.
As a result, the relationships of injection pressure and injection rate （p-q curve）were analyzed to identify the critical injection pressure which separate the permeation grouting and hydro-fracture grouting. This mechanizes was further verified by open excavate the specimen and examine the shape and area of grout modification in the calibration chamber
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