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Title:

STATISTICAL COMPARISON OF PROPERTIES OF MANUFACTURED SAND-TO-MORTAR DURABILITY AND SCALING RESISTANCE

Accession Number:

00975347

Record Type:

Component

Availability:

American Concrete Institute

38800 Country Club Drive
Farmington Hills, MI 48331 USA

Abstract:

In this work, results of tests on rock aggregate and manufactured sand from Paleozoic carbonate rocks from quarries in southwest Ontario were compared to those of mortars containing manufactured sand. Aggregate tests included petrographic analysis, water absorption/adsorption, linear expansion under various conditions, thermal expansion, insoluble residue content, micro-Deval abrasion loss, freeze-thaw loss, and rate of settlement of -0.075 mm fraction. Mortar tests consisted of drying shrinkage, water absorption/adsorption, linear expansion under various conditions, thermal expansion, and freeze-thaw loss. Multivariate statistical techniques were used to compare and group the properties of aggregates and mortars. Factor analysis showed that the results could be grouped into 4 factors: 1) durability; 2) porosity; 3) thermal expansion; and 4) isothermal expansion factors. Stepwise regression predictive models of mortar resistance to salt scaling were developed, based on results of simpler tests on aggregates. K-cluster analysis successfully classified the aggregates and mortars made from them into good and poor categories. The tree analysis provides the passing limits that can be applied to aggregate tests of any defined group of aggregates.

Report/Paper Numbers:

SP-192-42

Language:

English

Corporate Authors:

American Concrete Institute

38800 Country Club Drive
Farmington Hills, MI 48331 USA

Authors:

Hudec, P P
Agistalis, G

Editors:

V M Malhotra

Pagination:

p. 693-703

Publication Date:

2000

Conference:

Fifth CANMET/ACI International Conference on Durability of Concrete

Location: Barcelona, Spain
Date: 2000-6-4 to 2000-6-9
Sponsors: Canada Centre for Mineral and Energy Technology (CANMET) of Natural Resources Canada, Ottawa; American Concrete Institute; and Japan Concrete Institute.

Features:

References (8)

Subject Areas:

Data and Information Technology; Geotechnology; Highways; I36: Aggregates

Files:

TRIS

Created Date:

Jun 29 2004 12:00AM