Experimental and Numerical Study on Chloride Transport in Unsaturated Concrete: Highlighting Temperature, Humidity, and Mineral Admixtures

被引:2
|
作者
Du, Zhantao [1 ,2 ]
Jin, Zuquan [1 ,2 ]
Li, Shicai [1 ,2 ]
Xue, Huan [1 ,3 ]
Zhao, Rui [1 ]
机构
[1] Qingdao Univ Technol, Sch Civil Engn, Qingdao 266520, Peoples R China
[2] Minist Educ, Engn Res Ctr Concrete Technol Marine Environm, Qingdao 266520, Peoples R China
[3] Qingdao Branch Beijing Zhongchang Engn Consulting, Qingdao 266520, Peoples R China
基金
中国国家自然科学基金;
关键词
unsaturated concrete; chloride transport; diffusion coefficient; numerical simulation; mineral admixtures; temperature-humidity coupling; PENETRATION; PROFILES; MOISTURE;
D O I
10.3390/ma17040930
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Chloride transport within concrete is critical for the durability of reinforced concrete structures; however, its diffusion under the coupling action of temperature and humidity has not been fully comprehended. Therefore, in this work, the coupling effects of temperature, relative humidity, and mineral admixtures on chloride transport in concrete were investigated through experimental and numerical simulation work. The results show that the chloride diffusion coefficient decreases with the decreased temperature and growth of relative humidity; however, the chloride concentration on the concrete surface is increased with the growth of temperature and relative humidity. Moreover, compounding about 15% fly ash (FA) and 30% granulated ground blast furnace slag (GGBS) to replace the cement is the most beneficial for improving the antichloride capacity of concrete, considering also the strength. In addition, the numerical simulation considering the coupled effect of temperature and relative humidity of chloride transport in concrete has good agreement with that of experimental results.
引用
收藏
页数:15
相关论文
共 50 条
  • [31] Experimental study on compressive strength and frost resistance of steam cured concrete with mineral admixtures
    Chen, Bo
    Chen, Jialin
    Chen, Xudong
    Qiang, Sheng
    Zheng, Yongjie
    CONSTRUCTION AND BUILDING MATERIALS, 2022, 325
  • [32] Experimental study on compressive strength and frost resistance of steam cured concrete with mineral admixtures
    Chen, Bo
    Chen, Jialin
    Chen, Xudong
    Qiang, Sheng
    Zheng, Yongjie
    CONSTRUCTION AND BUILDING MATERIALS, 2022, 325
  • [33] The experimental research on the anti-corrosion performance of concrete with different mineral admixtures under sulfate and chloride environment
    Qian Wenxun
    Zhang Yanchi
    Chen Xunjie
    Ouyang Youlin
    PROGRESS IN INDUSTRIAL AND CIVIL ENGINEERING III, PT 1, 2014, 638-640 : 1431 - 1435
  • [34] Study on High amount Mineral Admixtures Concrete Performance
    Huang, ZhiDe
    ARCHITECTURE, BUILDING MATERIALS AND ENGINEERING MANAGEMENT, PTS 1-4, 2013, 357-360 : 667 - 670
  • [35] Numerical simulation of the moisture transport in unsaturated concrete
    Zhou, Yong
    Gyawali, Bigya
    Zhang, Weiping
    STRUCTURES, 2023, 47 : 1846 - 1857
  • [36] Influence of the type of mineral admixtures on the transport properties of self compacting concrete
    Siad, H.
    Bernard, S. Kamali
    Mesbah, H. A.
    Mouli, M.
    Khelafi, H.
    IIND INTERNATIONAL SEMINAR INVACO - INNOVATION & VALORIZATION IN CIVIL ENGINEERING & CONSTRUCTION MATERIALS, 2012, 2
  • [37] Experimental investigation of chloride ion monitoring in concrete considering the coupling effect of temperature and humidity
    Cui, Hongzhi
    Cao, Lele
    Cao, Xiangpeng
    Yu, Shiheng
    Huang, Mingyang
    JOURNAL OF BUILDING ENGINEERING, 2024, 98
  • [38] NUMERICAL AND EXPERIMENTAL-STUDY OF SOLUTE TRANSPORT IN UNSATURATED SOILS
    MACIEJEWSKI, S
    JOURNAL OF CONTAMINANT HYDROLOGY, 1993, 14 (3-4) : 193 - 206
  • [39] Effect of mineral admixtures on time-dependence of concrete exposed to chloride diffusion
    Liu, Junlong
    Ma, Haiyan
    Hu, Die
    Li, Qiang
    Chen, Shudong
    Nanjing Hangkong Hangtian Daxue Xuebao/Journal of Nanjing University of Aeronautics and Astronautics, 2011, 43 (02): : 279 - 282
  • [40] Mesoscopic Research on Chloride Ion Transport in Unsaturated Concrete
    Shen L.
    Chen D.
    Li W.
    Zhao S.
    Chen, Dingshi (291712544@qq.com), 2018, South China University of Technology (46): : 76 - 82