| Project/Area Number |
26820176
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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 |
Civil engineering materials/Construction/Construction management
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| Research Institution | Niigata University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | Ca-Mg-Si系材料 / オケルマナイト / オートクレーブ養生 / 結晶性トバモライト / C/S比 / Si重合度 / 耐硫酸塩性 / Ca-Mg-Si 系材料 / トバモライト / ケイ酸カルシウムマグネシウム水和物 / Ca/Si比 / 29Si-NMR / FT-IR |
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| Outline of Final Research Achievements |
Nowadays, high-durability has been required in concrete structures that assume long term-service. Therefore, generation of Tobermorite in the concrete rather than gel C-S-H with C/S ratio of about 1.5; has been important for the material design of high durability concrete. The purpose of this research is to evaluate the effect of the addition of high volume Akermanite, CaO-MgO-SiO2-based materials, with autoclave curing to the generation of Tobermorite, and to clarify the generation mechanism of Tobermorite from the view point of the hydration reaction of materials before maintaining temperature of autoclave curing (autoclave curing 0h). As a result, generation of Tobermorite was increased by reducing α-Quartz with high volume Akermanite. It is because that C-S-H with high C/S ratio was maintained, since the reaction of the Q at heating process in autoclave curing was suppressed by substitution of Akermanite.
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