@inproceedings{41b5f7cd29b846eb9989e62d199472fc,
title = "A new equation of state for cementitious materials a multiscale approach",
abstract = "The paper focuses on cementitious composites including concrete that are subjected to exterior hydrostatic pressure. The hardened cementitious composite is amultiphase material, containing cement paste, sand, water and air voids. A concrete composite contains coarse aggregates as well. The present paper presents an attempt to theoretically derive the equation of state of a hardened cementitious composite using a multi-scale approach. The equation of state represents the non-linear elastic-plastic behavior with hardening that is required to describe the volume change with increasing hydrostatic pressure on a representative specimen of the material. At sufficiently high pressures, it includes the closure of capillary pores. At the micro-scale level, an elastic-plastic spherical domain is considered with a single spherical cavity, while at the macro-scale levelit isassumed that every differential spherical domain has random radial parameters following a log-normal cumulative distribution function. The equations of state of the fine and coarse aggregates are assumed linear elastic. The phase mix rule (parallel model) is applied to obtain the equation of state of the entirecomposite material. All phases are assumed to be subjected to hydrostatic pressure.The proposed model is compared to available test data on mortar for validation and the comparison shows good agreement betweenthe proposed model prediction and the experimental results.",
keywords = "Concrete, Equation of state, Multi-scale approach, Random pore distribution",
author = "Karinski, {Yuri S.} and Semion Zhutovsky and Feldgun, {Vladimir R.} and Yankelevsky, {David Z.}",
year = "2015",
language = "الإنجليزيّة",
series = "Brittle Matrix Composites 11 - Proceedings of the 11th International Symposium on Brittle Matrix Composites BMC 2015",
publisher = "Institute of Fundamental Technological Research",
pages = "319--328",
editor = "Jan Olek and Leung, {Christopher K.Y.} and Brandt, {Andrzej M.} and Glinicki, {Michal A.} and Jerzy Lis",
booktitle = "Brittle Matrix Composites 11 - Proceedings of the 11th International Symposium on Brittle Matrix Composites BMC 2015",
address = "بولندا",
note = "11th International Symposium on Brittle Matrix Composites, BMC 2015 ; Conference date: 28-09-2015 Through 30-09-2015",
}