Date of Award

1994

Degree Type

Thesis

Degree Name

M.Sc.

Department

Civil and Environmental Engineering

First Advisor

Hudec, P.

Keywords

Engineering, Civil.

Rights

CC BY-NC-ND 4.0

Abstract

This study is an attempt to compare properties of coarse aggregate to properties of mortar prepared from the same aggregate. Various statistical techniques were employed to determine the relationships between the coarse aggregate properties and the mortar properties. Laboratory tests carried out on a 43 sample population including the control sample, involve petrographic analysis of coarse aggregate, determination of the acid insoluble residue, micro-Deval abrasion loss of fine aggregate, and rate of fines-settlement tests. The mortar testing consisted of: (a) measurement of drying shrinkage; (b) freeze-thaw tests; and (c) measurement of the coefficient of thermal expansion. Four main factors were found to control the measured properties in aggregates. These are, in decreasing order of importance: (1) aggregate frost resistance factor; (2) mortar frost resistance factor; (3) aggregate durability factor; and (4) aggregate dimensional stability factor. The aggregate frost resistance factor is dominated by coarse aggregate properties such as petrographic number, aggregate insoluble residue, coarse aggregate adsorption at 45% and 98% relative humidity, and coarse aggregate freeze-thaw losses. The mortar frost resistance factor consists of mortar freeze-thaw losses, mortar cummulative expansion, mortar adsorption at 98% relative humidity, and the suspension height drop function. The aggregate durability factor consists of the two coarse aggregate durability tests, the 28 days mortar drying shrinkage, the aggregate absorption upon saturation, and the aggregate absorption upon vacuum saturation. Finally, the aggregate dimensional stability factor incorporates the mortar expansion at 98% relative humidity the mortar expansion upon saturation, and the aggregate expansion upon saturation. (Abstract shortened by UMI.)Dept. of Geology and Geological Engineering. Paper copy at Leddy Library: Theses & Major Papers - Basement, West Bldg. / Call Number: Thesis1994 .A347. Source: Masters Abstracts International, Volume: 34-02, page: 0815. Adviser: P. P. Hudec. Thesis (M.Sc.)--University of Windsor (Canada), 1994.

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