Development and recovery of mechanical properties of self-healing cementitious composites with MgO expansive agent

被引：49
|
作者：
Sherir, Mohamed A. A. [1 ]
Hossain, Khandaker M. A. [1 ]
Lachemi, Mohamed [1 ]
机构：
[1] Ryerson Univ, Dept Civil Engn, 350 Victoria St, Toronto, ON M5B 2K3, Canada
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 148卷
基金：
加拿大自然科学与工程研究理事会;
关键词：
Engineered cementitious composite; Self-healing system; MgO expansive agent; Supplementary cementing materials; Compressive strength; Flexural strength; UPV; Crack healing; Strength recovery; Repeated; CAPABILITY; CONCRETE; REPAIR;
D O I：
10.1016/j.conbuildmat.2017.05.063
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper presents the performance of engineered cementitious composites (ECCs) produced with MgO utilized as expansive self-healing agent to heal micro cracks. ECCs capability to keep small crack width of less than 60 gm even under ultimate loads can stimulate the autogenous crack healing and thus, improving the mechanical properties of structural elements. Different test schemes were adopted to quantify the long-term self-healing capability of proposed ECC-MgO system (made of 5% MgO expansive agent 'MEA' as fly ash replacement in ECC matrix) through studying the development and recovery of strength (compressive and flexural) and Ultrasonic Pulse Velocity (UPV) of pre-loaded multiple damaged (cracked) cubic and prismatic specimens subjected to long term water and natural curing conditions. Test results indicated that preloaded cracked ECC-MgO specimens had high tendency to recover original mechanical properties of virgin (un-cracked) specimens through healing of micro-cracks. This study confirmed the self-healing capability of proposed ECC-MgO system. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：789 / 810
页数：22
相关论文
共 50 条
  • [1] Self-healing and expansion characteristics of cementitious composites with high volume fly ash and MgO-type expansive agent
    Sherir, Mohamed A. A.
    Hossain, Khandaker M. A.
    Lachemi, Mohamed
    CONSTRUCTION AND BUILDING MATERIALS, 2016, 127 : 80 - 92
  • [2] The influence of MgO-type expansive agent incorporated in self-healing system of Engineered cementitious Composites
    Sherir, Mohamed A. A.
    Hossain, Khandaker M. A.
    Lachemi, Mohamed
    CONSTRUCTION AND BUILDING MATERIALS, 2017, 149 : 164 - 185
  • [3] A review of intrinsic self-healing capability of engineered cementitious composites: Recovery of transport and mechanical properties
    Yildirim, Gurkan
    Keskin, Ozlem Kasap
    Keskin, Suleyman Bahadir
    Sahmaran, Mustafa
    Lachemi, Mohamed
    CONSTRUCTION AND BUILDING MATERIALS, 2015, 101 : 10 - 21
  • [4] Effect of chloride ingress on self-healing recovery of smart cementitious composite incorporating crystalline admixture and MgO expansive agent
    Xue, Caihong
    Li, Wengui
    Luo, Zhiyu
    Wang, Kejin
    Castel, Arnaud
    CEMENT AND CONCRETE RESEARCH, 2021, 139
  • [5] Self-Healing Capability of Fiber-Reinforced Cementitious Composites for Recovery of Watertightness and Mechanical Properties
    Nishiwaki, Tomoya
    Kwon, Sukmin
    Homma, Daisuke
    Yamada, Makoto
    Mihashi, Hirozo
    MATERIALS, 2014, 7 (03): : 2141 - 2154
  • [6] Feasibility assessment on self-healing ability of cementitious composites with MgO
    Beshr, Saleh Salem B.
    Mohaimen, I. M. Abdul
    Azline, M. N. Noor
    Azizi, S. Nor
    Nabilah, A. B.
    Aznieta, A. A. Farah Nora
    JOURNAL OF BUILDING ENGINEERING, 2021, 34
  • [7] Mechanical and permeability properties on self-healing of cementitious composites effect of nano silica cure
    Akin, Arife
    STRUCTURAL CONCRETE, 2022, 23 (03) : 1907 - 1919
  • [8] Preparation and Mechanical Properties of Microcapsule-Based Self-Healing Cementitious Composites
    Jiang, Shiping
    Lin, Zhiyang
    Tang, Can
    Hao, Wenfeng
    MATERIALS, 2021, 14 (17)
  • [9] Self-healing performance of aged cementitious composites
    Yildirim, Gurkan
    Khiavi, Arash Hamidzadeh
    Yesilmen, Seda
    Sahmaran, Mustafa
    CEMENT & CONCRETE COMPOSITES, 2018, 87 : 172 - 186
  • [10] Mechanical, Physical, and Self-Healing Behaviors of Engineered Cementitious Composites with Glass Powder
    Siad, Hocine
    Lachemi, Mohamed
    Sahmaran, Mustafa
    Hossain, Khandaker M. Anwar
    JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 2017, 29 (06)
12345