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Temperature Effects on Tensile and Compressive Mechanical Behaviors of C-S-H Structure via Atomic Simulation

Abstract : An atomic scale model of amorphous calcium silicate hydrate (C-S-H) with Ca/Si ratio of 1.67 is constructed. Effects of temperature on mechanical properties of C-S-H structure under tensile and compressive loading in the layered direction are investigated via molecular dynamics simulations. Results from present simulations show that (1) the tensile strength and Young's modulus of C-S-H structure significantly decrease with the increase of the temperature; (2) the water layer plays an important role in the mechanical properties of C-S-H structure; (3) the compressive strength is stronger than tensile strength, which corresponds with the characteristic of cement paste.
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Submitted on : Thursday, May 3, 2018 - 3:56:48 PM
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Hao Xin, Weihui Lin, Jia Fu, Wu Li, Zhihua Wang. Temperature Effects on Tensile and Compressive Mechanical Behaviors of C-S-H Structure via Atomic Simulation. Journal of Nanomaterials, Hindawi Publishing Corporation, 2017, 2017, pp.8476258. ⟨10.1155/2017/8476258⟩. ⟨hal-01685559⟩

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