A unified solidification model of hardening concrete composite for predicting the young age behavior of concrete

被引：25

作者：

Mabrouk, R ^{[1
]}

Ishida, T ^{[1
]}

Maekawa, K ^{[1
]}

机构：

[1] Univ Tokyo, Dept Civil Engn, Bunkyo Ku, Tokyo 1138556, Japan

来源：

CEMENT & CONCRETE COMPOSITES | 2004年 / 26卷 / 05期

关键词：

young age concrete; shrinkage; creep; multiphase material; microphysics; solidification; constitutive modeling; elasticity; plasticity; viscosity;

D O I：

10.1016/s0958-9465(03)00073-8

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The prediction of hardening young concrete behaviors is proposed using a solidification model based on the microphysical information of temperature, hydration ratio, porosity, saturation, isotherm and others. The solid model deals with cement paste as the solidified finite fictitious clusters having each creep property. Aggregates are idealized as suspended continuum media of perfect elasticity. The combination of both phases may create the overall features of concrete composite under the unstable transient conditions at early age. The micro-scale surface tension is treated as the driving force for the shrinkage associated with and without water migration. The solidification model is expected to offer the deformability of hardening concrete under the combined effect of external loads and the capillary stress estimated by the thermo-dynamic computation. Verification of the proposed model is conducted through comparison with some experimental data available in the literature. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：453 / 461

页数：9

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