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Advances in Materials Science and Engineering
Volume 2018, Article ID 6386280, 10 pages
https://doi.org/10.1155/2018/6386280
Research Article

Evaluation of Self-Healing Performance of PE and PVA Concrete Using Flexural Test

1Chonnam National University, Yeosu, Republic of Korea
2Geotechnical Engineering Research Institute, KICT, Goyang, Republic of Korea

Correspondence should be addressed to Jungwon Huh; rk.ca.mannohc@huhnowj

Received 19 January 2018; Accepted 26 March 2018; Published 15 May 2018

Academic Editor: Julian Wang

Copyright © 2018 Choonghyun Kang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The self-healing performance of PE and PVA concrete was evaluated, by using the three-point bending test with a notch. Four different crack inducement days were applied (7, 28, 49, and 91 days), and the same 21 days of healing period were applied to each case. The self-healing environments were in 20°C water, and in the curing room with 20°C temperature and 60% humidity. The flexural strength and the initial flexural stiffness of before and after healing were compared. As a result, both the strength recovery effect and the stiffness recovery effect decreased with the delay of crack inducement, and specimens in the water environment showed higher healing effect than those in the air environment. PVA fiber showed a relatively greater recovery effect than PE fiber.