Development of control method about micro crack localization for restrained volume change which occurred by simultaneous movement of moisture and heat in RC structure
| Project/Area Number |
21560580
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Osaka Institute of Technology (2010-2011)
Utsunomiya University (2009) |
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Principal Investigator |
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2009: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
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| Keywords | コンクリート / ひび割れ / クリープ / リラクセーション / 引張力学特性 / 損傷 / 信頼性 / 弾性係数 / 確率 / 体積変化 / 拘束 / 水分移動 / 繊維補強 |
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| Research Abstract |
In consideration of the moisture evaporation and thermal diffusion in dryness of concrete, this research examined the crack pattern which the volume change accompanying those environment does from simultaneous movement of water and heat. Moreover, the micro crack localization mechanism to fracture process zone under a restricted state was examined from the tensile creep test and the tensile stress relaxation test. Furthermore, the control method in consideration of accumulation of the micro crack was examined to shrinkage crack width important for the improvement in durability of RC structure. As a result, the analysis method has been built by relating of tensile creep strain and accumulation of micro crack, about crack pattern, micro crack localization mechanism, and shrinkage crack width.
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Report
(4 results)
Research Products
(18 results)
