Geotechnical Engineering Journal of the SEAGS & AGSSEA ISSN 0046-5828
Vol. 47 No. 3 September 2016
Towards a Design Framework for Spatial Variability in Cement Treatment for Underground Construction
By Y. Liu, Y. Jiang and F. H. Lee
ABSTRACT: The most common form of ground treatment used to facilitate underground construction in Singapore is cement treatment. However, there is currently no indication on how safe and how conservative this adopted strength is since the prescribed strength bears no relationship to the probability of failure or factor of safety. This paper examined several sources leading to non-uniformity and spatial variation in cement-treated soils, including curing time effect, influence of operating parameters on slurry concentration, in-situ water content and column positioning errors. A framework for design and monitoring of ground treatment by cement was proposed.
KEYWORDS: Cement-treated ground; Underground construction; Unconfined compressive strength; Spatial variability
