| Project/Area Number |
22560465
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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 |
Civil engineering materials/Construction/Construction management
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| Research Institution | Tokai University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
|
| Project Status |
Completed (Fiscal Year 2012)
|
| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | コンクリート / 貧配合 / スランプロス / 増粘剤 / 貧配合コンクリート / 脱水と加水 / 保水性 / 練混ぜ水 / スランプロス低減 / コンクリートの保水性 / モルタルフロー / ダブルミキシング / 遠心分離 / 凝集構造 / 脱水 |
|---|
| Research Abstract |
Since the workability of fresh concrete falls with time progress, it restricts construction. Therefore, not only the improvement in workability but maintenance is also necessary. Middle/high-strength concrete can obtain the slump loss reduction effect by using super plasticizer. However, in the case of lean mix proportion concrete, this effect is hardly obtained. Moreover, lean mix proportion concrete can be thinking that the fluidity of concrete has been influenced by the condition of mixing water. In this research, it showed clearly to be able to reduce slump loss by raising the water holding property of concrete. The way method for the ability to reduce the slump loss of lean-mix concrete by using both thickening agent and AE water reducing agent was proposed.
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