AMMONIUM SULFATE ATTACK ON CEMENT MORTAR
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Published:2002
F Rendell, R Jauberthie, 2002. "AMMONIUM SULFATE ATTACK ON CEMENT MORTAR", Challenges of Concrete Construction: Volume 6, Concrete for Extreme Conditions: Proceedings of the International Conference held at the University of Dundee, Scotland, UK on 9–11 September 2002, Ravindra K. Dhir, Michael J. McCarthy, Moray D. Newlands
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Chemicals storage in concrete silos often presents durability problems due to their chemical attack, the situation being severe due to the high concentration. The paper aims to examine the effects of ammonium salts-ammonium sulphate and nitrate, noted for their aggressive behaviour. Two laboratory programmes are reported which study the influence of ammonium solutions on PC mortar samples. Modification to mortar properties are reported. Ammonium sulphate undergoes a strong swelling that is correlated with the reduction in strength. These mortars also undergo rapid cracking after removal from solution and exposure to air. Ammonium nitrate undergoes a rapid decalcification which is accompanied by a strength loss.
INTRODUCTION
EXPERIMENTAL PROGRAMME
EXPERIMENTAL RESULTS
DISCUSSION
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