Entropy evolution during crack propagation in concrete under sulfate attack

被引：19
|
作者：
Yao, Jinwei [1 ,3 ]
Chen, Jiankang [1 ]
Lu, Chunsheng [2 ]
机构：
[1] Ningbo Univ, Fac Mech Engn & Mech, Ningbo 315211, Zhejiang, Peoples R China
[2] Curtin Univ, Sch Civil & Mech Engn, Perth, WA 6845, Australia
[3] Zhejiang Business Technol Inst, Ningbo 315012, Zhejiang, Peoples R China
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2019年 / 209卷
基金：
中国国家自然科学基金;
关键词：
Concrete; Sulfate attack; Surface cracks; Information entropy; Damage evolution; DAMAGE; EXPANSION; MECHANISM; MORTARS; MODEL;
D O I：
10.1016/j.conbuildmat.2019.03.083
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
In this paper, the corrosion experiment of concrete showed that the length and orientation of cracks, as well as their propagation direction are randomly distributed. By virtue of SEM and XRD techniques, the growth of delayed ettringite was detected, which leads to expansion stress and then induces the nucleation and propagation of cracks. To investigate the statistical characteristics of cracks, the concept of information entropy was adopted. Furthermore, based on the entropy evolution at different corrosion times and the chemical reaction rate of delayed ettringite, a model for entropy evolution was proposed. It is shown that the normalized entropy exponentially increases with the non-dimensional corrosion time. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页码：492 / 498
页数：7
相关论文
共 50 条
  • [21] Reliability assessment of concrete under external sulfate attack
    Sun, Dandan
    Huang, Changfu
    Cao, Zhenjie
    Wu, Kai
    Zhang, Lihai
    CASE STUDIES IN CONSTRUCTION MATERIALS, 2021, 15
  • [22] SELF-CURING CONCRETE UNDER SULFATE ATTACK
    Bashandy, A. A.
    ARCHIVES OF CIVIL ENGINEERING, 2016, 62 (02) : 3 - 18
  • [23] Deformation behaviour of concrete materials under the sulfate attack
    Sun, Dandan
    Wu, Kai
    Shi, Huisheng
    Miramini, Saeed
    Zhang, Lihai
    CONSTRUCTION AND BUILDING MATERIALS, 2019, 210 : 232 - 241
  • [24] Damage evolution model of early disturbed concrete under sulfate attack and its experimental verification
    Pan, Huimin
    Si, Xiuyong
    Zhao, Qingxin
    DYNA, 2018, 93 (01): : 52 - 59
  • [25] SULFATE ATTACK ON CONCRETE
    LAWRENCE, CD
    MAGAZINE OF CONCRETE RESEARCH, 1990, 42 (153) : 249 - 264
  • [26] Study on the expansion of concrete under attack of sulfate and sulfate-chloride ions
    Zhang, Minghua
    Chen, Jiankang
    Lv, Yunfeng
    Wang, Dongjie
    Ye, Jian
    CONSTRUCTION AND BUILDING MATERIALS, 2013, 39 : 26 - 32
  • [27] Damage evolution of blended cement concrete under sodium sulfate attack in relation to ITZ volume content
    Wu, Kai
    Kang, Wang
    Xu, Linglin
    Sun, Dandan
    Wang, Fazhou
    De Schutter, Geert
    CONSTRUCTION AND BUILDING MATERIALS, 2018, 190 : 452 - 465
  • [28] Acoustic Emission and Physicomechanical Properties of Concrete under Sulfate Attack
    Zhao, Yunfeng
    Ren, Song
    Wang, Le
    Zhang, Ping
    Liu, Rong
    Chen, Fan
    Jiang, Xiang
    JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 2021, 33 (04)
  • [29] Deterioration Mechanisms of Sulfate Attack on Concrete under Alternate Action
    高润东
    Journal of Wuhan University of Technology(Materials Science Edition), 2010, 25 (02) : 355 - 359
  • [30] Experimental and numerical investigations on damage evolution of concrete under sulfate attack and freeze-thaw cycles
    Gan, Lei
    Xu, Weichao
    Shen, Zhenzhong
    Xu, Liqun
    Zhang, Wenbing
    Zhang, Hongwei
    Abbas, Muhammad Aun
    Chen, Guanyun
    JOURNAL OF BUILDING ENGINEERING, 2023, 71
12345