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Article: The effect of cover thickness on rebars exposed to elevated temperatures.
- Article from:
- Construction and Building Materials
- Article date:
- October 1, 2008
- Author:
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Copyright informationCOPYRIGHT 2008 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
In this study, the mechanical properties of structural rebars have been investigated after exposure of elevated temperatures. The mortar was prepared with CEM I 42.5N cement and fired clay. The S 420a, [empty set]16 mm ribbed steel bars were used to prepare 56 x 56 x 290, 76 x 76 x 310, 96 x 96 x 330 and 116 x 116 x 350 mm specimens with the covers of 20, 30, 40 and 50 mm against elevated temperatures up to 800[degrees]C. The rebars were embedded in mortars to prepare specimens, and then specimens were exposed to 20, 100, 200, 300, 500 and 800[degrees]C temperatures for 3 h, individually. After cooling process, specimens were cured for 28 days. The mechanical ...