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Advances in Civil Engineering
Volume 2018, Article ID 6727516, 12 pages
Research Article

Effects of Shrinkage-Compensation on Mechanical Properties and Repair Performance of Strain-Hardening Cement Composite Materials

1Department of Architectural Engineering, Chungnam National University, Daejeon 34134, Republic of Korea
2Department of Construction Engineering Education, Chungnam National University, Daejeon 34134, Republic of Korea
3Department of Civil Engineering, Gifu University, Gifu, Japan

Correspondence should be addressed to Hyun-Do Yun;

Received 15 August 2017; Accepted 4 December 2017; Published 5 February 2018

Academic Editor: Peng Zhang

Copyright © 2018 Seok-Joon Jang 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.


This paper describes the effects of expansive admixture on the mechanical properties of strain-hardening cement-based composite (SHCC) mixtures. Also, this study investigates structural performance of reinforced concrete (RC) beam specimens repaired with SHCC and Ex-SHCC (SHCC with expansive admixture). In this study, SHCC and Ex-SHCC mixtures with two specified compressive strength values of 30 MPa and 60 MPa and the fiber volume fraction of 1.5% were investigated. The expansive admixture replacement ratio of 10% by cement weight was used in this study. The test results indicate that the compressive, tensile, and flexural strength values of the SHCC mixtures increased when expansive admixture was included in the mix; however, their toughness and ductility decreased. The study results also show that the application of both SHCC and Ex-SHCC mixtures to repair damaged RC beam specimens can lead to significant structural performance improvement by mitigating crack damage and increasing ductility.