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Comparison Analysis on the Mechanical Properties of HSC and NSC after the Action of High Temperatures

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Abstract:

With the wide application of high strength concrete in the building construction,the risk making concrete subject to high temperatures during a fire is increasing. Comparison tests on the mechanical properties of high strength concrete (HSC) and normal strength concrete (NSC) after the action of high temperature were made in this article, which were compared from the following aspects: the peak stress, the peak strain, elasticity modulus, and stress-strain curve after high temperature. Results show that the laws of the mechanical properties of HSC and NSC changing with the temperature are the same. With the increase of heating temperature, the peak stress and elasticity modulus decreases, while the peak strain grows rapidly. HSC shows greater brittleness and worse fire-resistant performance than NSC, and destroys suddenly. The research and evaluation on the fire-resistant performance of HSC should be strengthened during the structural design and construction on the HSC buildings.

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Periodical:

Advanced Materials Research (Volume 1014)

Pages:

49-52

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1014.49

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Online since:

July 2014

Authors:

Xiao Ping Su*

Keywords:

High Temperature, High-Strength Concrete (HSC), Mechanical Property, Normal Strength Concrete

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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