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浙江大学学报(工学版)
浙江大学学报(工学版)
土木工程、水利工程、交通工程     
基于水泥水化的早龄期混凝土温湿耦合
杜明月, 田野, 金南国, 王宇纬, 金贤玉
浙江大学 建筑工程学院,浙江 杭州 310058
Coupling of hygro-thermal field in early-age concrete based on cement hydration
DU Ming-yue, TIAN Ye, JIN Nan-guo, WANG Yu-wei, JIN Xian-yu
College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China
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摘要：
为了分析早龄期混凝土温湿度场耦合效应,基于Krstulovi-Dabi水化反应动力学方程式建立掺粉煤灰的水泥水化微观结构模型；考虑混凝土硬化过程中的水化放热及水分消耗作用,以及孔隙率对湿度扩散系数的影响,构建早龄期混凝土温湿度耦合作用模型,并通过已有试验数据对模型进行验证.研究表明基于水泥水化微观信息的混凝土温湿度场耦合作用模型可以较好地预测早龄期混凝土内部的温湿度场时变发展规律,研究成果可为早龄期混凝土变形及开裂的研究提供理论支持.
Abstract:
In order to analyze the coupling effect of temperature and humidity fields in early-age concrete, a microstructure model of cement hydration incorporating fly ash based on Krstulovi-Dabi hydration kinetics formulas was proposed. In considering the hydration heat release and water consumption during the hardening process, as well as the influence of porosity on moisture diffusion coefficient,a coupled hygro-thermal model of early-age concrete was established, and verified through an experiment. The research results indicates that the coupled hygro-thermal model constructed based on the micro-structure information of cement hydration can accurately predict the time-dependent development of temperature and humidity field inside the early-age concrete. The research can theoretically support the investigation on the deformation and cracking of the early-age concrete.
出版日期: 2015-08-01
:  TU 528.1  
基金资助:

国家“973”重点基础研究发展计划资助项目（2015CB655100）; 国家自然科学基金资助项目（51478419,NSFC 51378012）; 浙江省交通投资集团有限公司科技资助项目（13-513209-036）
通讯作者: 金南国,男,教授,博导     E-mail: jinng@zju.edu.cn
作者简介: 杜明月(1989—),男,硕士生,从事混凝土多场耦合方面的研究. E-mail: minguedu@gmail.com
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杜明月, 田野, 金南国, 王宇纬, 金贤玉. 基于水泥水化的早龄期混凝土温湿耦合[J]. 浙江大学学报(工学版), 10.3785/j.issn.1008-973X.2015.08.002.

DU Ming-yue, TIAN Ye, JIN Nan-guo, WANG Yu-wei, JIN Xian-yu. Coupling of hygro-thermal field in early-age concrete based on cement hydration. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 10.3785/j.issn.1008-973X.2015.08.002.

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http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2015.08.002    或    http://www.zjujournals.com/eng/CN/Y2015/V49/I8/1410

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