Abstract: In order to explore the influence of self-desiccation and moisture diffusion on the internal humidity evolution of high performance concrete, specimens were subjected to self-desiccation condition and constant temperature and humidity condition. Then the evolution law of humidity under above conditions was systematically investigated. The results show that the internal humidity decrement caused by self-desiccation mainly occurs within the age of 28 d while that triggered by moisture distribution mainly occurs within the age of 14 d. Besides, the adding of fly ash decreases humidity decrement significantly either induced by self-desiccation or moisture diffusion and makes the matrix stay in the moisture saturation phase for at least 8 d. However, the mixture of ground granulated blast furnace slag accelerates internal humidity decrement. Moreover, the evolution of internal humidity is dominated by self-desiccation in the early stage, and when the dosage of fly ash was 50%, moisture diffusion takes the lead. Furthermore, with increase of water to binder ratio or the decrease of depth, the percentage of self-desiccation influence on humidity decrement descends gradually accompanied by the increasing proportion of moisture diffusion influence.
作者简介: 金祖权,青岛理工大学土木工程学院教授,博士研究生导师。1998年6月毕业于焦作工学院。2003年6月毕业于河南理工大学,获得工学硕士学位。2006年6月毕业于东南大学,获得工学博士学位。2009—2011年在中科院海洋研究所从事博士后研究工作。2014—2015年在英国伦敦大学学院访学,曾获“霍英东青年教师奖”。主要从事海洋环境混凝土耐久性以及高性能混凝土制备技术的研究。近年来在混凝土材料及结构领域发表论文50余篇,包括 《硅酸盐学报》、 Cement and Concrete Research、 Construction and Building Materials、 Corrosion Science和 Journal of Advanced Concrete Technology等。常洪雷,2018年博士毕业于东南大学,现为山东大学助理研究员、硕士生导师。主要从事高性能水泥基材料制备、耐久性及劣化机理的研究。参与多项国家基金项目,发表学术论文18篇,其中被土木工程材料领域顶级期刊Cement and Concrete Research、Cement and Concrete Compo-sites等SCI收录6篇。
引用本文:
常洪雷, 金祖权, 刘健. 自干燥及水分扩散引起的高性能混凝土内部湿度演变[J]. 材料导报, 2019, 33(14): 2370-2375.
CHANG Honglei, JIN Zuquan, LIU Jian. Relative Humidity Evolution of High Performance Concrete Caused by Self-desiccation and Moisture diffusion. Materials Reports, 2019, 33(14): 2370-2375.
1 Soliman A M, Nehdi M L. Materials and Structures, 2011, 44, 878. 2 Parrott L J. Magazine of Concrete Research, 1991, 43(154), 45. 3 Terrill J M, Richardson M, Sekby A R. Magazine of Concrete Research, 1986, 38 (137), 220. 4 Kima Jin-Keun,Lee Chil-Sung. Cement and Concrete Research, 1999,29, 1921. 5 Akita H, Fujiwara T, Ozaka Y. Magazine of Concrete Research, 1997, 49 (179), 129. 6 Neveille A, Pierre-Claude Aitcin. Materials and Structures, 1988, 206(31), 111. 7 Persson B. Materials and Structures, 1997, 199(30), 293. 8 Ahmed Loukili, Abdelhafid Khelidj, Pierre Richard. Cement and Concrete Research, 1999, 29, 577. 9 Uchikawa H, Hanehara S, Hirao H. ACI Special Publications, 1997, 2, 949. 10 Jiang Z W, Sun Z P, Wang P M. Journal of the Chinese Ceramic Society, 2003, 31(8), 770(in Chinese). 蒋正武, 孙振平, 王培铭. 硅酸盐学报, 2003, 31(8), 770. 11 Jiang Z W, Wang P M. Journal of Wuhan University of Technology, 2003, 25(7), 18(in Chinese). 蒋正武, 王培铭. 武汉理工大学学报, 2003, 25(7), 18. 12 Benz D P. Cement and Concrete Research, 2008, 38, 196. 13 Jiang Z W, Sun Z P, Wang P M. Fly Ash Comprehensive Utilization, 2003(2), 16(in Chinese). 蒋正武, 孙正平, 王培铭. 粉煤灰综合利用, 2003(2), 16. 14 Jiang Zhengwu, Sun Zhenping,Wang Peiming. Cement and Concrete Research, 2006,36, 320. 15 Huang Y, Qi K, Zhang J. Journal of Tsinghua University (Science and Technology), 2007, 47(3), 309(in Chinese). 黄瑜, 祁锟, 张君. 清华大学学报(自然科学版), 2007, 47(3), 309. 16 Zhang J, Chen H Y, Hou D W. Journal of Building Materials, 2011, 14(3), 227(in Chinese). 张君, 陈浩宇, 侯东伟. 建筑材料学报, 2011, 14(3), 227. 17 Yuan R Z. Cementious materials science, Wuhan University of Technology Press, China, 1996(in Chinese). 袁润章. 胶凝材料学, 武汉理工大学出版社, 1996. 18 Yao Y M, Shi H S, Shi T. Cement, 2006, 9(4), 1(in Chinese). 姚玉梅, 施惠生, 施韬. 水泥, 2006, 9(4), 1.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2019, Vol. 33 
