Porous-micro-dilatation theory for random crystallization: Monte Carlo simulation for delayed ettringite formation

Porous-micro-dilatation theory for random crystallization: Monte Carlo simulation for delayed... 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Mechanica Springer Journals

Porous-micro-dilatation theory for random crystallization: Monte Carlo simulation for delayed ettringite formation

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Publisher
Springer Vienna
Copyright
Copyright © 2017 by Springer-Verlag Wien
Subject
Engineering; Theoretical and Applied Mechanics; Classical and Continuum Physics; Continuum Mechanics and Mechanics of Materials; Structural Mechanics; Vibration, Dynamical Systems, Control; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
0001-5970
eISSN
1619-6937
D.O.I.
10.1007/s00707-017-1863-y
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Acta MechanicaSpringer Journals

Published: Jun 3, 2017

References

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