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Home > Publications > 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.
Showing 1-2 of 2 Abstracts search results
March 1, 1995
Michael McVay, Jeff Rish III, Chris Sakezles, Shaik Mohseen, and Charles Beatty
The scaling of concrete parking aprons under F/A-l 8 and B-l aircraft asso-ciated with chemical attack from spilled lubricants and heat has been repro-duced in the laboratory. Two different series of tests involving the refluxing of lubricants, water and concrete were performed. The first involved reflux ing ground concretes, and the second, refluxed concrete-coated cylinders. Series 1 tests identijed if the replacement materials were suspect to attack, and Series 2 ‘was designed to measure strength loss of ordinary portland cement- (OPC) coated specimens, as well as replacement materials. Over 10 different coatings and 10 different inlay replacement materials were tested and compared to OPC control specimens. It was found that OPC lost 55 percent of its strength after 7 days, whereas neutral pH cements showed no reaction (Series 1 tests) and no strength loss (Series 2 tests). Only polyvi-nyl alcohol and polyacrylic acid coatings showed a significant reduction in attack (40percent) of all the coatings tested.
May 1, 1993
Michael C. McVay, Lee D. Smithson, and Charles Manzione
The Department of Defense has seen an increase in airfield concrete apron distress in the form of surface scaling when exposed to cyclic heat, spilled lubricants, and/or hydraulic fluids. Chemical analysis of the damaged concrete reveals that the spilled fluids are undergoing hydrolysis (breakdown) accompanied by the consumption of calcium hydroxide, and hydrated silicate and aluminate phases. The damage was reproduced in the laboratory on 3 ft by 4-in. (10.2-cm) thick slabs during 5 weeks of exposure to lubricants and cyclic heat. Use of penetrating sealants, coatings and/or neutral pH concretes are suggested for pavements exposed to this environment.
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