TY - JOUR
T1 - Effect of lateral earth pressure coefficient on pressure controlled compaction grouting in triaxial condition
AU - Wang, S. Y.
AU - Chan, D. H.
AU - Lam, K. C.
AU - Au, S. K A
PY - 2010/6
Y1 - 2010/6
N2 - The design, fabrication, and assembly of a new laboratory apparatus for the investigation of the behavior of compaction grouting in triaxial condition are presented in this paper. Using this laboratory apparatus, pressure-controlled compaction grouting tests were carried out in specimens of completely decomposed granite (CDG) in Hong Kong. Precisely controlled injection water into a specially designed latex balloon in the specimen was to simulate a compaction grouting process. In these tests, the effective confining pressure, lateral earth pressure coefficient (K), excess pore water pressure, back pressure, void ratio change, and vertical deformation of the specimen were measured. The main focus was to investigate the development of injection pressure, void ratio, and excess pore water pressure due to compaction grouting and subsequent consolidation of soils. In addition, both the compaction efficiency and the average strength enhancement ratio are defined to evaluate the effect of compaction grouting.
AB - The design, fabrication, and assembly of a new laboratory apparatus for the investigation of the behavior of compaction grouting in triaxial condition are presented in this paper. Using this laboratory apparatus, pressure-controlled compaction grouting tests were carried out in specimens of completely decomposed granite (CDG) in Hong Kong. Precisely controlled injection water into a specially designed latex balloon in the specimen was to simulate a compaction grouting process. In these tests, the effective confining pressure, lateral earth pressure coefficient (K), excess pore water pressure, back pressure, void ratio change, and vertical deformation of the specimen were measured. The main focus was to investigate the development of injection pressure, void ratio, and excess pore water pressure due to compaction grouting and subsequent consolidation of soils. In addition, both the compaction efficiency and the average strength enhancement ratio are defined to evaluate the effect of compaction grouting.
KW - Compact grouting
KW - Completely decomposed granite
KW - Injection rate
KW - Laboratory tests
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U2 - 10.3208/sandf.50.441
DO - 10.3208/sandf.50.441
M3 - RGC 21 - Publication in refereed journal
SN - 0038-0806
VL - 50
SP - 441
EP - 445
JO - Soils and Foundations
JF - Soils and Foundations
IS - 3
ER -