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Microstructure-based fractal models for heat and mass transport properties of cement paste

机译：基于微观结构的水泥浆传热和传质特性分形模型

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摘要

In this study, a computer simulation for the microstructure, heat and mass transport properties of cement paste is established. Constituent phases and pore structure of cement paste are analyzed in detail and a three-level representation of multistate microstructure of cement paste is constructed based on some reasonable assumptions. Simulated results are comprehensively analyzed and verified, which proves the reliability and efficiency of the presented simulation. Based on the simulated microstructure, transport properties of cement paste are investigated with the aid of fractal theory. Fractal features of cement paste are obtained through the simulated microstructure. Then, fractal models are applied to predict transport properties (permeability, diffusivity and thermal conductivity) of cement paste. In order to verify the fractal-models;experimental-data and-results from other models in literature are adopted to make comparisons, which shows a reasonable consistency and proves the reliability and efficiency of the presented fractal models. (C) 2018 Elsevier Ltd. All rights reserved.
机译：在这项研究中，建立了水泥浆的微观结构，传热和传质特性的计算机模拟。详细分析了水泥浆的组成相和孔结构，并基于一些合理的假设，构建了水泥浆多态微观结构的三级表示。对仿真结果进行了全面的分析和验证，证明了所提仿真的可靠性和有效性。基于模拟的微观结构，借助分形理论研究了水泥浆的传输性能。通过模拟的微观结构获得了水泥浆的分形特征。然后，使用分形模型来预测水泥浆的传输特性（渗透率，扩散率和导热率）。为了验证分形模型，采用文献中其他模型的实验数据和结果进行比较，表明了合理的一致性，证明了所提出的分形模型的可靠性和有效性。 （C）2018 Elsevier Ltd.保留所有权利。

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  • 来源
    《International Journal of Heat and Mass Transfer》 |2018年第ptab期|432-447|共16页
  • 作者

    Yu P.; Duan Y. H.; Chen E.; Tang S. W.; Wang X. Renshaw;

  • 作者单位

    Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan, Hubei, Peoples R China;

    Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan, Hubei, Peoples R China;

    Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China;

    Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan, Hubei, Peoples R China;

    Nanyang Technol Univ, Sch Phys & Math Sci, Singapore, Singapore;

  • 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 eng
  • 中图分类
  • 关键词

    Cement paste; Microstructure; Pore structure; Transport properties; Simulation;

    机译：水泥浆;微观结构;孔结构;传输性能;模拟;

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