| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2011: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2010: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2009: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2008: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
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| Research Abstract |
A simple evaluation method of the acid resistivity of cementitious materials used for structures which are concerned about sulfuric acid deterioration, such as sewage treatment plants, was investigated experimentally and analytically. As a result, it was found that the deterioration prediction of cement hydrates due to sulfuric acid can be made from the changes of the value of pH in sulfuric acid solution where pulverized cement hydrates were reacted with sulfuric acid. In the deterioration prediction, however, the pore structure of cement hydrates must be considered since its effect on the deterioration rate cannot be negligible.
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