Development of related technology to enhanced adhesive performance of repair material for concrete based on a new concept of controlled crack path

2014 Fiscal Year Final Research Report

• Project/Area Number: 24560691
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Building structures/materials
• Research Institution: Akita Prefectural University
• Principal Investigator: YAMADA KANJI 秋田県立大学, システム科学技術学部, 教授 (50315628)
• Co-Investigator(Kenkyū-buntansha): ISHIYAMA Satoru 秋田県立大学, 建築環境システム学科, 助教 (80315647)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 補修 / 補強 / 界面 / 付着 / 強度 / 靱性

Outline of Final Research Achievements

The author investigated in order to enhance the adhesive performance of concrete-repair interface by means of fracture toughness test and FEM analysis. The specimen with steel fiber and aggregate marked the maximum strength showing 4.84MPa with the repair-fracture ratio reaching 81%, which is 79% of the strength of matrix and 68% of the strength of repair. The maximum repair-fracture ratio reached 96.1%. Then the purpose of the study for achieving high adhesive performance in the interface was duly attained with fracturing the repair avoiding the interface-fracture. Also the author resorted to FEM analysis for verifying the experimental results.

Free Research Field

建築材料学