Mechanical properties of fibre reinforced reactive powder concrete after exposure to high temperatures

Publication Type:
Conference Proceeding
Citation:
From Materials to Structures: Advancement Through Innovation - Proceedings of the 22nd Australasian Conference on the Mechanics of Structures and Materials, ACMSM 2012, 2013, pp. 1177 - 1181
Issue Date:
2013-08-12
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Reactive Powder Concrete (RPC) is a high-performance concrete that exhibits excellent mechanical properties and durability characteristics, owing to its homogeneity, dense microstructure and the presence of fibres. This research studies its behaviour with exposure to high temperature. The results include residual compressive strength and modulus of elasticity for two RPC mixes, one containing steel fibres and a second with PVA fibres. Temperature exposures up to 700°C were investigated. Testing of RPC cylinders containing steel fibres exposed to temperatures above 400°C show a violent explosive reaction under thermal loading with precautions needed in the laboratory to guard against the explosive effect.The results showan increase in residual compressive strength up to a temperature of 300°C; but beyond 300°C, the strength is reduced considerably. The elastic modulus also showed a steady loss at high temperatures and the research methodology and results are presented within. © 2013 Taylor & Francis Group.
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