| Project/Area Number |
24760456
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Building structures/materials
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| Research Institution | Oita University |
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Principal Investigator |
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
|
| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
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| Keywords | コンクリート / 収縮ひび割れ / 混和材 / フライアッシュ / 高炉スラグ微粉末 / ひび割れ |
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| Research Abstract |
The purpose of this study is to clarify the cracking behavior of concrete containing blast furnace slag and/or fly ash in case of same strength at 28 days through the compressive strength test, the embedded reinforcing bar test, the autogeneous shrinkage test and the drying shrinkage test.
As a results showed that the influence of admixtures on the autogeneous and drying shrinkage strain of concretes is small. And concrete with blast furnace slag cracked at earlier ages than plain concrete, in spite of concrete with fly ash cracked at the same age. Furthermore, the ratio of restrained stress to splitting tensile strength of concrete at the cracking was 0.6 to 0.7 regardless of containing admixtures.
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