Modeling alkali-silica reaction in non-isothermal, partially saturated cement based materials

Francesco Pesavento; Dariusz Gawin; Mateusz WyrzykowskiBernhard A. SchreflerLuciano Simoni

首页> 外文期刊>Computer Methods in Applied Mechanics and Engineering >Modeling alkali-silica reaction in non-isothermal, partially saturated cement based materials

【24h】

Modeling alkali-silica reaction in non-isothermal, partially saturated cement based materials

机译：Modeling alkali-silica reaction in non-isothermal, partially saturated cement based materials

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

A mathematical model of combined action of hygro-thermal, chemical and mechanical loads is proposed to describe chemical degradation of cement based materials due to ASR and cracking due to material stresses. The model is based on mechanics of multiphase reactive porous media and isotropic damage theory. The mass-, energy- and momentum balance equations, as well as constitutive and physical relationships necessary for modelling the ASR in variable hygro-thermal conditions, are developed. Material shrinkage/swelling is modelled by means of effective stresses, with evolving solid surface fraction and sorption isotherms. Both the ASR reaction extent and the strain caused by it are described in a rate form. The ASR expansion is modelled as an imposed strain, depending on both the material temperature and humidity, considering effect of both gel aging and ASR initiation phase. A method for numerical solution of the model equations with the finite element and finite differences methods is presented. The proposed mathematical model is validated by comparing the simulation results with some published experimental data concerning hygro-thermal processes and ASR expansion of concrete specimens in different hygro-thermal conditions, both constant and variable in time.

著录项

来源
《Computer Methods in Applied Mechanics and Engineering》 |2012年第15期|95-115|共21页
作者
Francesco Pesavento; Dariusz Gawin; Mateusz WyrzykowskiBernhard A. SchreflerLuciano Simoni;
展开▼
作者单位

University of Padova, via Marzolo 9, 35131 Padova, Italy;

Technical University of Lodz, Al. Politeclmiki 6, 90-924 Lodz, Poland;

Technical University of Lodz, Al. Politeclmiki 6, 90-924 Lodz, Poland,Empa, Swiss Federal Laboratories for Materials Science and Technology, UEberlandstrasse 129, 8600 Diibendorf, Switzerland;

展开▼
收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类自动化基础理论;
关键词
hydro-thermo-chemo-mechanical model; expansive alkali-silica reaction; chemical damage;

Modeling alkali-silica reaction in non-isothermal, partially saturated cement based materials

摘要

著录项

相关主题

期刊订阅