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Title: Direct tension test and tensile strain capacity of concrete at early age
Authors: Swaddiwudhipong, S. 
Lu, H.-R.
Wee, T.-H. 
Keywords: Compressive strength
Fly ash
Granulated blast furnace slag
Portland cement
Tensile property
Issue Date: Dec-2003
Citation: Swaddiwudhipong, S., Lu, H.-R., Wee, T.-H. (2003-12). Direct tension test and tensile strain capacity of concrete at early age. Cement and Concrete Research 33 (12) : 2077-2084. ScholarBank@NUS Repository.
Abstract: The tensile strain capacity of concrete under uniaxial tension is investigated using the direct tension test method. The adopted method of testing improves the weak bond strength between the embedded bar and concrete and reduces the stress concentration at the end of the embedded bar. The method has overcome the difficulties in centralizing and aligning the two embedded bars in the specimens. Seven mixes of concrete were designed to study the effects of age, compressive strength and mineral admixture on the tensile strain capacity. The investigation shows that the tensile strain capacity of concrete is a relatively independent parameter. The average tensile strains at failure and at 90% failure load are 120 and 100 μ, respectively. The corresponding characteristic tensile strain values at failure and at 90% failure load are 86 and 78 με, respectively. © 2003 Elsevier Ltd. All rights reserved.
Source Title: Cement and Concrete Research
ISSN: 00088846
DOI: 10.1016/S0008-8846(03)00231-X
Appears in Collections:Staff Publications

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