Effects of Temperature and Strain-Rate on the Compressive Strength of Concrete

Abstract:

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Dynamic compressive tests were carried out for concrete specimens after exposure to temperatures 23°C, 400°C, 600°C and 800°C by using Split Hopkinson Pressure Bar(SHPB) apparatus. Cylindrical specimens with 98mm in diameter and 49mm in length were used in tests. The strain rates achieved in tests ranged from 30s-1 to 220s-1. The results showed that the compressive strength increases with increasing strain-rate, but decreases with the increase of temperature. However, the effect of strain-rate on improving the compressive strength of concrete decreases with the increase of temperature. Moreover, the strain-rate has an improvement on the peak strain of concrete, and the accretion rate increases with increasing temperature.

Info:

Periodical:

Advanced Materials Research (Volumes 168-170)

Edited by:

Lijuan Li

Pages:

2619-2624

DOI:

10.4028/www.scientific.net/AMR.168-170.2619

Citation:

C. X. Liu and Y. L. Li, "Effects of Temperature and Strain-Rate on the Compressive Strength of Concrete", Advanced Materials Research, Vols. 168-170, pp. 2619-2624, 2011

Online since:

December 2010

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$35.00

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