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The effects of dimensional mould sizes on volumetric shrinkage strain of lateritic soil

By John Engbonye SANI, George MOSES and Faustinus BAYANG

Abstract

Dimensional influences of specimen size on the volumetric shrinkage strain values of a lateritic soil for waste containment system have not been researched upon. Therefore, this paper presents the result of a laboratory study on the volumetric shrinkage strain (VSS) of lateritic soil at three different dimensional sizes of mould (split former mould, proctor mould and California bearing ratio mould) at three energy levels; British standard light (BSL), West African standard (WAS) and British standard heavy (BSH) respectively. Compactions were done at different molding water content of -2% to +6% optimum moisture content (OMC). At -2% to +2% molding water content for the split former mould the volumetric shrinkage strain met the requirement of not more than 4% while at +4% and +6% only the WAS and BSH met the requirement. The proctor mould and the CBR mould on the other hand gave a lower value of volumetric shrinkage strain in all compactive effort and the values are lower than the 4% safe VSS suggested by Tay et al., (2001). Based on the VSS values obtained if the CBR mould can be used to model site condition it is recommended for use to simulate site condition for Volumetric shrinkage strain for all molding water content and compactive effort

Topics: Lateritic soil; Volumetric shrinkage strain; Molding water content; Compactive effort, Electronic computers. Computer science, QA75.5-76.95
Publisher: AcademicDirect
Year: 2016
OAI identifier: oai:doaj.org/article:7636a9d219e04b99ad081b3702b64928
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