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材料导报  2021, Vol. 35 Issue (12): 12075-12080    https://doi.org/10.11896/cldb.20040215
  无机非金属及其复合材料 |
混凝土内部温湿度响应参数分析:水分扩散系数与导热系数
赵立晓1, 王鹏刚1,2, 王兰芹1, 赵铁军1,2, 光文涛1
1 青岛理工大学土木工程学院,青岛 266033
2 山东省高校蓝色经济区工程建设与安全协同创新中心,青岛 266033
Analysis of Parameters for Temperature and Humidity Response in Concrete: Moisture Diffusion Coefficient and Thermal Conductivity
ZHAO Lixiao1, WANG Penggang1,2, WANG Lanqin1, ZHAO Tiejun1,2, GUANG Wentao1
1 School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China
2 Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao 266033, China
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摘要 混凝土的水分扩散系数和导热系数是联系服役环境与混凝土内部微环境的桥梁。本工作基于Fick第二定律与Boltzmann转换,获得了不同水灰比的成熟混凝土内部相对湿度与水分扩散系数的关系,揭示了成熟混凝土内部相对湿度与水灰比对混凝土水分扩散系数的影响规律。本工作还建立了干燥状态下普通混凝土导热系数与密度的关系,结合描述等温吸附曲线的BSB模型,建立了考虑混凝土密度与混凝土内部相对湿度的混凝土导热系数模型。
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赵立晓
王鹏刚
王兰芹
赵铁军
光文涛
关键词:  混凝土  水分扩散系数  导热系数  相对湿度    
Abstract: Moisture diffusion coefficient and thermal conductivity of concrete are the bridges between service environment and concrete internal microenvironment. In this paper, based on Fick's second law of diffusion and Boltzmann transformation, the relationship between internal relative humidity and moisture diffusion coefficient of concrete with different water-cement ratios was obtained. The effects law of relative humidity and water-cement ratio on moisture diffusion coefficient of concrete was revealed. The relationship between thermal conductivity and density of normal concrete at dry state was established, combined with the BSB model of isothermal adsorption, the thermal conductivity model of concrete which considering moisture content was established.
Key words:  concrete    moisture diffusion coefficient    thermal conductivity    relative humidity
               出版日期:  2021-06-25      发布日期:  2021-07-01
ZTFLH:  TU528.1  
基金资助: 十三五国家重点研发计划(2017YFB0310000);山东省重点研发计划(2019GSF110006);高性能土木工程材料国家重点实验室开放基金(2019CEM006)
通讯作者:  wangpenggang@qut.edu.cn   
作者简介:  赵立晓,2016年6月毕业于山东农业大学,获得工学学士学位。2018年12月毕业于青岛理工大学,获得工程硕士学位。现为东南大学材料科学与工程学院博士研究生。目前主要研究领域为混凝土耐久性。
王鹏刚,青岛理工大学,副教授,硕士研究生导师。2014年6月毕业于青岛理工大学,2014—2016年,在东南大学和江苏省建筑科学研究院从事博士后研究工作。2019—2020年,英国伦敦大学学院访问学者。主要从事混凝土耐久性、防护与修复的研究。
引用本文:    
赵立晓, 王鹏刚, 王兰芹, 赵铁军, 光文涛. 混凝土内部温湿度响应参数分析:水分扩散系数与导热系数[J]. 材料导报, 2021, 35(12): 12075-12080.
ZHAO Lixiao, WANG Penggang, WANG Lanqin, ZHAO Tiejun, GUANG Wentao. Analysis of Parameters for Temperature and Humidity Response in Concrete: Moisture Diffusion Coefficient and Thermal Conductivity. Materials Reports, 2021, 35(12): 12075-12080.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.20040215  或          http://www.mater-rep.com/CN/Y2021/V35/I12/12075
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