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Cement-treated soil : a comparison of laboratory and field data from Fountain slide remediation deep mixing project

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Title: Cement-treated soil : a comparison of laboratory and field data from Fountain slide remediation deep mixing project
Author: Lapointe, Emilie
Degree Master of Applied Science - MASc
Program Civil Engineering
Copyright Date: 2012
Publicly Available in cIRcle 2012-04-20
Abstract: In order to better understand the influence of laboratory reconstitution methods on the strength of cement-treated soil, a laboratory program was undertaken to investigate the unconfined compressive strength of cement-treated specimens reconstituted from low plasticity soils. The laboratory program examines two soil types and two reconstitution methods. The soil samples were taken from a Cutter Soil Mixer [CSM] field improvement site in British Columbia. Two reconstitution methods were used: a saturated wet-mixing method and an unsaturated dry-mixing method. To assess the relevance of using laboratory results to guide design, a subsequent field component of this research compares the strength of test specimens cast from field-mixed cement-treated soil, with the strength obtained from laboratory-reconstituted specimens. The strength of laboratory-reconstituted soil specimens is largely independent of the soil type and reconstitution method used. A standardized approach for determining cement content in uncured mixed soil-cement is evaluated. Results from the method allow for direct comparison between the strength of field-mixed versus laboratory-reconstituted specimens as a function of the cement content, and/or the water-cement ratio. Based on the simplicity of use and accuracy of results, it is recommended that the Heat of Neutralization method (ASTM 5982-07) be incorporated into the quality assurance program of deep mixing projects.
URI: http://hdl.handle.net/2429/42127
Scholarly Level: Graduate

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