Volume 3, Issue 6, November 2017, Page: 80-86
Factors Affecting the Self-Healing Efficiency of Cracked Concrete Structures
Meseret Getnet Meharie, Department of Civil Engineering, Pan African University Institute for Basic Sciences, Technology and Innovation, Nairobi, Kenya; Department of Construction Technology and Management, Adama Science and Technology University, Adama, Ethiopia
James Wambua Kaluli, Department of Civil Engineering, Pan African University Institute for Basic Sciences, Technology and Innovation, Nairobi, Kenya
Zachary Abiero-Gariy, Department of Civil Engineering, Pan African University Institute for Basic Sciences, Technology and Innovation, Nairobi, Kenya
Nandyala Darga Kumar, Department of Civil Engineering, Fiji National University (FNU), Samabula, Suva, Fiji Islands
Received: Jul. 5, 2017;       Accepted: Jul. 18, 2017;       Published: Nov. 28, 2017
DOI: 10.11648/j.ajasr.20170306.12      View  2483      Downloads  130
Abstract
Self-healing concrete is the ability of concrete to repair its cracks autogenously or autonomously. Since some years ago, several studies have been conducted towards the improvement of self-healing efficiency of cracked concrete structures through various methods for the betterment of its application. However, there is a need to prepare a thorough review report on the factors that affect self-healing efficiency of concrete. This paper focusses a review on several factors that affect the self-repairing efficiency of self-healing smart concrete from the extant recent literature. Based on the review carried out, it can be concluded that formation of CaCO3 or Ca (OH) 2 in natural process, the dosage of capsule and type of healing agent in chemical process, and the type of bacteria and precipitation of CaCO3 in biological process of self-healing are the most vivid factors. It can also be summarised as better self-healing efficiency is achieved during early age of concrete, with narrower cracks, higher concentration of Ca2+ ions, optimum thickness of capsule shell and dosage of capsule.
Keywords
Crack, Smart Concrete, Self-Healing Concrete, Natural Self-Healing Process, Chemical Self-Healing Process, Biological Self-Healing Process, Mineral Admixtures
To cite this article
Meseret Getnet Meharie, James Wambua Kaluli, Zachary Abiero-Gariy, Nandyala Darga Kumar, Factors Affecting the Self-Healing Efficiency of Cracked Concrete Structures, American Journal of Applied Scientific Research. Vol. 3, No. 6, 2017, pp. 80-86. doi: 10.11648/j.ajasr.20170306.12
Copyright
Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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