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UBC Theses and Dissertations

Effect of rate of shearing strain on the shear strength of freshly mixed concrete Purushotham, Salla Kanniah


This thesis describes attempts to measure the shearing strength of freshly mixed concrete and relate it to standard "Workability" tests. The study is a continuation of investigations made by Mr. Li Yang in 1963-65 at the University of British Columbia. Yang measured the shearing strength of eight mixes at one velocity and obtained a type of "viscosity" at that speed. This thesis broadens the investigation to shear strength of eight different mixes at seven different speeds. The shear box developed at the University of British Columbia and used by Mr. Yang was used in these further investigations and the shapes of the shear vs. rate of shearing strain or "viscosity" curves for eight different mixes was partially developed.

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