Tensile creep model for concrete subject to constant restraints

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Abstract

Tensile stresses develop in restrained concrete slabs with shrinkage deformation. The appropriate creep or relaxation functions are crucial for assessing the stress development and the associated cracking potential. Existing creep models were found not suitable for such stress evaluations. This study investigates restrained slabs stress-strain characteristics and tensile creep behavior in axially restrained concrete specimens which represent field conditions of actual structures. A modified tensile creep compliance function is used to account for the high viscous effect with restrained conditions for accurate predictions of the stress and cracking potential in structures.

Keywords concrete shrinkage deformation restrained stress tensile creep flow strain

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Issue Date: 15 May 2014

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	Ya WEI
	Xiangjie YAO

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Ya WEI,Xiangjie YAO. Tensile creep model for concrete subject to constant restraints[J]. Journal of Tsinghua University(Science and Technology), 2014, 54(5): 563-567.

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http://jst.tsinghuajournals.com/EN/ OR http://jst.tsinghuajournals.com/EN/Y2014/V54/I5/563

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