In the present paper, the original micro-dilatation theory or the so-called void elasticity and classical elasticity have been firstly implemented as the cement paste and aggregates, respectively. The effect of crystallization pressure driven by the delayed ettringite formation across the cement-based materials has been computed and studied via the micro-dilatation theory and the Monte Carlo simulation. The micro-mechanically motivated crystallization pressure is computed by means of the microscale constitutive parameter of the micro-dilatation theory to obtain the current porosity and assess the swelling deformations herein. Two-phase material assumption, i.e., cement paste and aggregates, has been taken into account. Due to the fact that the crystallization pressure strongly depends on the irregular pore shapes and heterogeneous supersaturation conditions, the Monte Carlo simulation has been successfully achieved to predict the current porosity and crystallization-based stress tensor. The preliminary numerical outcomes fairly agreed with the experimental observations coming from scanning electronic microscope.
Acta Mechanica – Springer Journals
Published: Jun 3, 2017
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