Sulfate Resistance of a Canadian Slag Cement

ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Sulfate Resistance of a Canadian Slag Cement

Author(s): R. Doug Hooton and John J. Emery

Publication: Materials Journal

Volume: 87

Issue: 6

Appears on pages(s): 547-555

Keywords: accelerated tests; blast furnace slag; concrete durability; long-time study; mortars (materials); portland cements; sulfate resistance; portland slag cements; slags; Materials Research

Date: 11/1/1990

Abstract:
Tests to evaluate the sulfate resistance of concrete made with portland cement partially replaced by a separately ground, pelletized slag from Hamilton, Ontario, were initiated in 1977. Over 1000 cylinders were cast from eight concrete mixes made with normal, moderate, and sulfate-resisting cements, and 45, 65, and 72 percent slag replacement. These were exposed to water and different strengths of sulfate solutions, ranging from 1000 to 3000 mg/l SO4 for 8 yr, after which some were exposed to accelerated 50,000 mg/l SO4 solutions. The tests were augmented by a large, two-part series of more than 23 different mortar mixes using a method similar to the standardized ASTM C 1012 procedure. These mortar bars were exposed to deionized water and various sulfate solutions ranging from 3000 to 50,000 mg/l. Variables included C3A content of portland cements, slag replacement level, alumina content of slag, sulfate salt type, and compressive strength at first exposure.