| Project/Area Number |
08650688
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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 | Meijo University |
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Principal Investigator |
MUTOH Atsushi The Faculty of Science and Technology, Meijo University, Assosiate Professor, 理工学部, 助教授 (90278325)
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| Co-Investigator(Kenkyū-buntansha) |
KANEKO Rinji The Faculty of Science and Technology, Meijo University, Professor, 理工学部, 教授 (10076581)
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| Project Period (FY) |
1996 – 1998
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| Project Status |
Completed (Fiscal Year 1998)
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| Budget Amount *help |
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1998: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1997: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1996: ¥1,100,000 (Direct Cost: ¥1,100,000)
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| Keywords | concrete / deterioration / durability / fire resistance / moisture transport / heat transfer / finite element method / water permeability testing |
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| Research Abstract |
Concrete materials contain extremely fine pores with large amount of water in various forms. Temperature change, time passing and other environmental conditions cause release and evaporation of significant amount of water, and induce changes of properties of concrete. This may cause cracks and affects deteriorations of concrete materials.
This research was done to develop a simulation method to estimate the coupled heat and mass transfer in porous media such as concrete. A finite element analysis, assuming a homogeneous elastic material, is used to study the temperature and the rate of moisture propagation through a concrete wall under different time dependent temperature/moisture boundary conditions.
In the case of increasing pressure in heated concrete should also be taken into account, the coupled heat and mass transfer analysis is necessary. It is needed to solve the diffusion equations, for example, first we describe the diffusion of moisture flux by the functions of temperature and pressure.
By the use of the developed mathmatical model, we prepare the software to solve the problem numerically and after that, simple method for measuring water permeability was also studied.
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