Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/66374
Title: Variation of differential strain ratio in normal-and high-strength concrete under short-term uniaxial compression
Authors: Loo, Y.H. 
Tam, C.T. 
Zhong, H.
Issue Date: Dec-1994
Citation: Loo, Y.H.,Tam, C.T.,Zhong, H. (1994-12). Variation of differential strain ratio in normal-and high-strength concrete under short-term uniaxial compression. Magazine of Concrete Research 46 (169) : 245-256. ScholarBank@NUS Repository.
Abstract: The creep behaviour of concrete test specimens of three different mix proportions and strength levels was studied at various sustained stress levels. The experimental results of short-term sustained loading tests were analysed to provide a quantitative description of the observed behaviour. The creep behaviour of normal- and high-strength concrete specimen has reached the point of creep was compared. A method based on the variation of differential strain ratio (the rate of change of transverse strain with respect to axial strain) for determining whether a concrete specimen has reached the point of creep fracture is proposed. Test results showed that the stress - strength ratio of the creep strength of concrete increased with the strength of concrete. The transverse and axial strains of concrete at this critical stress - strength ratio did not vary much with the strength of concrete, but averaged about 320-350 and 1430-1470 microstrain respectively.
Source Title: Magazine of Concrete Research
URI: http://scholarbank.nus.edu.sg/handle/10635/66374
ISSN: 00249831
Appears in Collections:Staff Publications

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