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Article: Concrete cover effect on reinforced concrete bars exposed to high temperatures.
- Article from:
- Construction and Building Materials
- Article date:
- June 1, 2007
- Author:
CopyrightCOPYRIGHT 2007 Reed Business Information, Inc. (US). This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Abstract
The mechanical properties of structural reinforcement steel have been investigated after the exposure to high temperatures. Plain steel, reinforcing steel bars embedded into mortar and plain mortar specimens were prepared and exposed to 20, 100, 200, 300, 500, 800 and 950[degrees]C temperature for 3 h individually. The $420 deformed steel bars with diameters of [empty set]10, [empty set]16 and [empty set] 20 were used. The mortar was prepared with CEM 1 42.5 N cement and fly ash. The tension tests on reinforcements taken from cooled specimens were performed, and the variations in yield strength, ultimate strength and in resilience of three different ...