書誌事項
- タイトル別名
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- FUNDAMENTAL STUDY ON EVALUATION METHOD OF COVERCRETE QUALITY OF CONCRETE STRUCTURES BY SURFACE WATER ABSORPTION TEST
抄録
Completely non-destructive technique of surface water absorption test (SWAT) for newly-constructed and existing concrete structures was developed by the authors. SWAT can measure absorped water volume continuously and accurately immediately after filling up water. Through the measurement by SWAT in 10 minutes, several indicators for resistance against water absorption are obtained, and covercrete quality from the surface to some depth can be evaluated by these indicators.<br> In this research, the following three investigations were conducted; 1) tests for concretes with different constituent materials, W/C, and curing conditions without the effect of rainfall, 2) tests for concretes in different exposure environment, 3) measurement of actual structures.<br> SWAT could detect the effects of W/C and curing condition on covercrete quality for concretes with OPC and slag cement. It was proved that water absorption rate at 10 minutes obtained from actual structures could be considered to follow normal distribution. In order to establish inspection system with SWAT, a method to set threshold value and a way of judgment in inspection were proposed based on a statistical approach. As practical applications of SWAT, analyzing the adverse effect of microcrack on covercrete quality, and detecting the effects of expansive additive and silane type water repellent on improving covercrete quality were introduced.
収録刊行物
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- 土木学会論文集E2（材料・コンクリート構造）
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土木学会論文集E2（材料・コンクリート構造） 69 (1), 82-97, 2013
公益社団法人 土木学会
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詳細情報 詳細情報について
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- CRID
- 1390282680332236416
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- NII論文ID
- 130004962054
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- ISSN
- 21856567
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
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- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可