Integrated self-sensing and self-healing cementitious composite with microencapsulation of nano-carbon black and slaked lime

被引：31

作者：

Dong, Wenkui ^{[1
]}

Li, Wengui ^{[1
]}

Shen, Luming ^{[2
]}

Zhang, Shishun ^{[3
]}

Vessalas, Kirk ^{[1
]}

机构：

[1] Univ Technol Sydney, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia

[2] Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia

[3] Huazhong Univ Sci & Technol, Sch Civil & Hydraul Engn, Wuhan, Peoples R China

来源：

MATERIALS LETTERS | 2021年 / 282卷

基金：

澳大利亚研究理事会;

关键词：

Cementitious composite; Self-sensing; Self-healing; Nano-carbon black; Slaked lime; Microencapsulation;

D O I：

10.1016/j.matlet.2020.128834

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, multifunctional cementitious composites with integrated self-sensing and self-healing properties are developed using microencapsulation of nano-carbon black (NCB) to enclose slaked lime (SL). The results show that the cracks healing efficiency is strongly improved with NCB enclosed SL. With SL, the self-sensing capacity of NCB-cementitious composite exhibits higher and more stable piezoresistivity before or after self-healing. The NCB enclosing SL particles not only achieve excellent piezoresistivity, but also preserve SL from initial hydration. Furthermore, the remained SL can be released for further reactions in the cracks. The results provide a promising integrated multifunctional self-sensing and self-healing cementitious composite for structural health monitoring application. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：4

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