A multiscale prediction model and simulation for autogenous shrinkage deformation of early-age cementitious materials

被引：23

作者：

Zhao, Haitao ^{[1
,3
]}

Liu, Jiaping ^{[2
,3
]}

Yin, Xinlong ^{[4
]}

Wang, Yi ^{[5
]}

Huang, Donghui ^{[6
]}

机构：

[1] Hohai Univ, Coll Civil & Transportat Engn, Nanjing 210098, Jiangsu, Peoples R China

[2] Southeast Univ, Coll Mat Sci & Engn, Nanjing 211189, Jiangsu, Peoples R China

[3] State Key Lab High Performance Civil Engn Mat, Nanjing 210008, Jiangsu, Peoples R China

[4] China Design Grp Co Ltd, Nanjing 210014, Jiangsu, Peoples R China

[5] Ecole Cent Lille, LML, FRE 3723, CNRS, F-59650 Villeneuve Dascq, France

[6] Jinling Inst Technol, Nanjing 211169, Jiangsu, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 215卷

基金：

中国国家自然科学基金;

关键词：

Multiscale prediction model; Autogenous shrinkage; Cementitious material; Chemical shrinkage; Relative humidity; Pore structure; RELATIVE-HUMIDITY CHANGE; MICROSTRUCTURAL DEVELOPMENT; NUMERICAL-SIMULATION; MOISTURE DIFFUSION; DRYING SHRINKAGE; CONCRETE; HYDRATION; RESISTANCE; BEHAVIOR; PASTE;

D O I：

10.1016/j.conbuildmat.2019.04.225

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Autogenous shrinkage of cementitious materials is a key factor leading to early-age cracking of concrete. Based on the micromechanics, the underlying multiscale framework and capillary pressure theory, a multiscale model of autogenous shrinkage is presented for cementitious materials with a homogenization method. By comparing the predictive values from models with the experimental data in the literature, the HYMOSTRUC relative humidity model and Shimomura and Maekawa pore size distribution model are recommended for use in the proposed autogenous shrinkage multiscale model. Combined with the HYMOSTRUC chemical shrinkage model, the simulated results of the autogenous shrinkage multiscale model proposed in this paper match well with the experimental data in the literature and the predictive capability is successfully validated. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：482 / 493

页数：12

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