Record Details

Studying the Combination Effect of Additives and Micro Steel Fibers on Cracks of Self-Healing Concrete

Journal of Engineering


Field	Value

Title	Studying the Combination Effect of Additives and Micro Steel Fibers on Cracks of Self-Healing Concrete

Creator	Muhsin, Muhannad Hussien AbdElzahra, Israa Hameed

Description	In this study, the effect of the combination of micro steel fibers and additives (calcium hydroxide and sodium carbonate) on the size of cracks formation and healing them were investigated. This study aims to apply the use of self-healing phenomenon to repair cracks and to enhance the service life of the concrete structures. Micro steel fibers straight type were used in this research with 0.2% and 0.4% by volume of concrete. A weight of 20 and 30 kg/m3 of Ca(OH)2 and 2 and 3 kg/m3 of Na2CO3 were used as a partial cement replacement. The results confirm that the concrete cracks were significantly self-healed up to 30 days re-curing. Cracks width up to 0.2 mm were completely self-healed after re-curing for 90 days by using the combination of micro steel fiber of 0.4% by volume of concrete and 25 kg/m3 of Ca(OH)2 and 2.5 kg/m3 of Na2CO3 as a partial replacement of cement. Products of Self-healing are observed by Scanning Electron Microscopy (SEM) with Energy Dispersive X-Ray Analysis (EDX). It was found that self-healing occurred mainly due to precipitation of calcium carbonate.

Publisher	College of Engineering \| University of Baghdad

Date	2016-01-01

Type	info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article

Format	application/pdf

Identifier	http://joe.uobaghdad.edu.iq/index.php/main/article/view/271

Source	مجلة الهندسة; مجلد 22 عدد 1 (2016): Journal of Engineering (Eng. J.); 49-67 Journal of Engineering; Vol 22 No 1 (2016): Journal of Engineering (Eng. J.); 49-67 2520-3339 1726-4073

Language	eng

Relation	http://joe.uobaghdad.edu.iq/index.php/main/article/view/271/237

Rights	Copyright (c) 2016 Eng. J.