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|Title:||Variation of differential strain ratio in normal-and high-strength concrete under short-term uniaxial compression|
|Authors:||Loo, Y.H. |
|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|
|Appears in Collections:||Staff Publications|
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