Factors Affecting Long-Term Efficiency of Compensation Grouting in Clays

Compensation grouting has been attracting attention in recent years to control ground settlement caused by underground construction. A successful and effective application of compensation grouting depends not only on the use of a good monitoring system in the field but also on a fundamental understa...

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Bibliographic Details
Published inJournal of geotechnical and geoenvironmental engineering Vol. 129; no. 3; pp. 254 - 262
Main Authors Au, S. K. A, Soga, K, Jafari, M. R, Bolton, M. D, Komiya, K
Format Journal Article
LanguageEnglish
Published New York, NY American Society of Civil Engineers 01.03.2003
Subjects
Applied sciences
Buildings. Public works
Exact sciences and technology
Geotechnics
Stabilization. Consolidation
TECHNICAL PAPERS
Clay
Fracture mechanics
Fracture
Boundary condition
Overconsolidated soil
Stress path
Finite element method
Clays
Laboratory tests
Settlement
Cement content
Consolidation
Compensation grouting
Grouting
Pore pressure
Tunneling
Laboratory test
Numerical simulation
Soil consolidation
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Summary:Compensation grouting has been attracting attention in recent years to control ground settlement caused by underground construction. A successful and effective application of compensation grouting depends not only on the use of a good monitoring system in the field but also on a fundamental understanding of grout behavior in soils. For compensation grouting in clay, there is a need to consider the long-term effectiveness of compensation grouting. Grout injection tests were conducted in the laboratory to examine soil fracturing patterns and consolidation effects in relation to compensation grouting. Both compaction and hydrofracturing modes of grouting were tested on kaolin clay specimens with different overconsolidation ratios. Finite-element analysis was also conducted to simulate the balloon expansion tests (ideal compaction grouting tests) and the results were compared with the data from the laboratory tests. Based on the research findings, new design criteria are proposed to improve the long-term efficiency of compensation grouting for clays.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:1090-0241
1943-5606
DOI:10.1061/(ASCE)1090-0241(2003)129:3(254)