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슬러리법에 의한 탄소섬유보강 시멘트복합체의 제조에서 보강섬유와 계면결착제와의 상관특성
최응규,Choi, Eung-Kyoo 한국건축시공학회 2002 한국건축시공학회지 Vol.2 No.3
The objective of the study is to examine the characteristic correlations between reinforcing carbon fiber and interfacial adhesion agent since the interfacial adhesion strength between reinforcing carbon fiber and matrices is believed to be an essential element influencing the physical properties in carbon fiber reinforced cement composite using slurry method. The integrity of interfacial adhesion between reinforcing fiber and cement not only affects the quality of fiber reinforced cement composite but also influences to a large degree the physical properties of the cement composite when producing carbon fiber reinforced cement composite using slurry method. Having analyzed the physical properties 1.e., water content, tensile strength, flexural strength and flexural toughness of carbon fiber reinforced cement composite specimens, C-PAM(cation polyacrylamide) was determined to be an optimum interfacial adhesion agent. The study has also demonstrated that interfacial adhesion strength varies largely on the content and type of the reinforcing fiber. Judging from magnified view of the tensile shear cross-section using VMS(video microscope system), interfacial adhesion strength between reinforcing fiber and matrices is affected by the type of interfacial adhesion agent. According to the result of the experiments, C-PAM was determined to be an ideal interfacial adhesion agent when using carbon fiber in producing carbon fiber reinforced cement composite with the optimum content of carbon fiber being established.
최응규,김연희,박종근 대한안전경영과학회 2010 대한안전경영과학회지 Vol.12 No.2
Functional Concrete Added Titanium Dioxide(TIO2) for photocatalysis was about a result strength Reduction by recent studies. Therefore, The purpose of the study is to review the possibility of TIO2 for using concrete admixture. As a result, Nano TIO2 for concrete admixture helps increased strength of concrete and here are some of the details. The compressive strength and flexural strength of cement mortar added same amount of Nano SF and TIO2 for admixture were development of strength a certain level each other. when Nano admixture use 10%, SF and TIO2 showed development of strength 60% and 40% each other gradually. If I use over 10% Both SF and TIO2, they showed irregular strength variations.