2009 Fiscal Year Final Research Report
Elongation of Life Time of Concrete Structures by Controlling Crack Width with New Materials
| Project/Area Number |
18206058
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Building structures/materials
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| Research Institution | Tohoku University |
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Principal Investigator |
MIHASHI Hirozo Tohoku University, 大学院・工学研究科, 教授 (90091751)
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| Co-Investigator(Kenkyū-buntansha) |
MAEDA Masaki 東北大学, 大学院・工学研究科, 准教授 (30262413)
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| Co-Investigator(Renkei-kenkyūsha) |
KANEKO Yoshio 京都大学, 大学院・工学研究科, 教授 (60312617)
NISHIWAKI Tomoya 山形大学, 地域教育文化学部, 准教授 (60400529)
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| Project Period (FY) |
2006 – 2009
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| Keywords | ひび割れ / ハイブリッド型繊維補強 / セメント複合材料 / 耐久性 / 耐震性能 / 損傷度 / 高靭性 / 自己修復 |
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| Research Abstract |
This research project tried to develop a methodology for realizing a long life of concrete structures by increasing greatly the capability to resist cracking in concrete. As a result, it was clarified that a proper mix-designing of hybrid fiber reinforced cement-based composites (HFRCC) leads to reduce remarkably the crack width in columns and shear-walls under severe earthquakes and that such a high toughness of HFRCC can contribute a lot to increase the toughness of structural members and to reduce permeability through the members for controlling the rate of corrosion of reinforcing steel bars.
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