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Title |
Box-Wilson Experimental Design-based Optimal Design Method of High Strength Self Compacting Concrete
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Authors |
도정윤(Jeong-Yun Do) ; 김두기(Doo-Kie Kim) |
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DOI |
http://dx.doi.org/10.11112/jksmi.2015.19.5.092 |
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Keywords |
실험계획법 ; 재료설계 ; 고강도 자기충전형 콘크리트 ; 반응표면법 ; 중심합성계획 ; 정준분석 ; 최적화 Experimental design ; Material design ; High strength self compacting concrete ; Response surface methodology ; Canonical analysis ; Optimization |
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Abstract |
Box-Wilson experimental design method, known as central composite design, is the design of any information-gathering exercises where variation is present. This method was devised to gather as much data as possible in spite of the low design cost. This method was employed to model the effect of mixing factors on several performances of 60 MPa high strength self compacting concrete and to numerically calculate the optimal mix proportion. The nonlinear relations between factors and responses of HSSCC were approximated in the form of second order polynomial equation. In order to characterize five performances like compressive strength, passing ability, segregation resistance, manufacturing cost and density depending on five factors like water-binder ratio, cement content, fine aggregate percentage, fly ash content and superplasticizer content, the experiments were made at the total 52 experimental points composed of 32 factorial points, 10 axial points and 10 center points. The study results showed that Box-Wilson experimental design was really effective in designing the experiments and analyzing the relation between factor and response.
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