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

A multiscale prediction model and simulation for autogenous shrinkage deformation of early-age cementitious materials
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早龄胶凝材料自收缩变形的多尺度预测模型与模拟

DOI:
10.1016/j.conbuildmat.2019.04.225
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发表时间:
2019-08
影响因子:
7.4
通讯作者:
Donghui Huang
Donghui Huang
中科院分区:
工程技术1区
文献类型:
--
作者:
Haitao Zhao;Jiaping Liu;Xinlong Yin;Yi Wang;Donghui Huang

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胶凝材料的自收缩是导致混凝土早期开裂的重要因素。基于细观力学、多尺度框架和毛管压力理论,采用均匀化方法建立了水泥基材料自收缩的多尺度模型。通过将模型预测值与文献中的实验数据进行比较,推荐使用HYMOWIC相对湿度模型和Shimomura和Maekawa孔径分布模型。将本文提出的自收缩多尺度模型与HYMOWRC化学收缩模型相结合,模拟结果与文献中的实验数据吻合较好,成功验证了模型的预测能力。
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.
DOI: 10.1007/978-1-349-03994-4
发表时间: 1979
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