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논문 기본 정보

자료유형
학술저널
저자정보
Kamal, Mounir M. (Department of Civil Engineering, Faculty of Engineering, Menoufia University) Safan, Mohamed A. (Department of Civil Engineering, Faculty of Engineering, Menoufia University) Al-Gazzar, Mohamed A. (Water Research Center, Ministry of Irrigation, Al-Kanater)
저널정보
테크노프레스 Advances in concrete construction Advances in concrete construction 제1권 제4호
발행연도
2013.1
수록면
273 - 288 (16page)

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The main objective of this research was to evaluate the potentials of self-compacting concrete (SCC) mixes to develop bond strength. The investigated mixes incorporated relatively high contents of dolomite powder replacing Portland cement. Either silica fume or fly ash was used along with the dolomite powder in some mixes. Seven mixes were proportioned and cast without vibration in long beams with 10 mm and 16 mm steel dowels fixed vertically along the flowing path. The beams were then broken into discrete test specimens. A push-put configuration was adopted for conducting the bond test. The variation of the ultimate bond strength along the flowing path for the different mixes was evaluated. The steel-concrete bond adequacy was evaluated based on normalized bond strength. The results showed that the bond strength was reduced due to Portland cement replacement with dolomite powder. The addition of either silica fume or fly ash positively hindered further degradation as the dolomite powder content increased. However, all SCC mixes containing up to 30% dolomite powder still yielded bond strengths that were adequate for design purpose. The test results demonstrated inconsistent normalized bond strength in the case of the larger diameter compared to the smaller one.

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