Development of self-healing UHP-FRCC for maintenance-free RC structures and its application

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289186
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Building structures/Materials
• Research Institution: Tohoku University
• Principal Investigator: Nishiwaki Tomoya 東北大学, 工学(系)研究科(研究院), 准教授 (60400529)
• Co-Investigator(Kenkyū-buntansha): 権代 由範 仙台高等専門学校, 建築デザイン学科, 准教授 (00553520) ; 五十嵐 豪 東北大学, 工学(系)研究科(研究院), 助教 (10733107) ; 桐越 一紀 東北大学, 工学(系)研究科(研究院), 技術専門職員 (60240660) ; 高橋 典之 東北大学, 工学(系)研究科(研究院), 准教授 (60401270) ; 石山 智 秋田県立大学, システム科学技術学部, 助教 (80315647)
• Research Collaborator: FANTILLI Alessandro Politechnico di Torino, 准教授 ; KWON Sukmin Land and Houses Institution, 研究員 ; SHAIKH Faiz U. A. Curtin University, 准教授
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 建築構造・材料 / 自己修復コンクリート / UHP-FRCC / メンテナンスフリー / 耐久性 / 埋設型枠パネル

Outline of Final Research Achievements

In this study, the self-healing UHP-FRCC (Ultra-High Performance Fiber Reinforced Cementitious Composite) was developed and investigated to enhance the service life of RC structures without maintenance works even under severe conditions. Application of the UHP-FRCC for structural members of RC structures was also explored. As a result, it was confirmed that UHP-FRCC with PVA fibers could enhance the capability of self-healing without degradation of its mechanical performances. We used the UHP-FRCC as the surface panels of the RC members, and it was confirmed that the mechanical performance of the members with the UHP-FRCC panels could be obtained by the numerical analysis and experimental approach. In particular, UHP-FRCC with high volume fly ash showed the effect of reducing environmental impact. From these results, we can obtain the basic knowledge for the realization of maintenance-free RC structures.

Free Research Field

建築材料