EFFECT OF LATERAL EARTH PRESSURE COEFFICIENT ON PRESSURE CONTROLLED COMPACTION GROUTING IN TRIAXIAL CONDITION

SOILS AND FOUNDATIONS

D. H. CHAN¹  K. C. LAM²  S. K. A. AU³  S. Y. WANG⁴ 

[1] Department of Civil and Environmental Engineering, University of Alberta;Department of Building and Construction, City University of Hong Kong;Department of Civil Engineering, The University of Hong Kong;Centre for Geotechnical and Materials Modelling Department of Civil, Surveying and Environmental Engineering, The University of Newcastle

关键词: compact grouting;    completely decomposed granite;    injection rate;    laboratory tests;    (IGC: K14);   

DOI  :  10.3208/sandf.50.441

学科分类：建筑学

来源: Japanese Geotechnical Society / Jiban Kogakkai

【 摘 要 】

References(8)Cited-By(2)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.

【 授权许可】

Unknown