플루오르화에 의해 표면개질된 탄소섬유의 시멘트 매트릭스 내 매입인발거동

Effect of Fluorination on Pull-out Response of Carbon Fiber Embedded in Cement Matrices

This paper aimed at the development of hydrophilic carbon fiber with improved tensile strength and ductility, numerous single fiber pullout tests from different cement matrices were performed. Fiber debonding and pullout have a large influence on the tensile stress - crack opening behavior of fiber concrete. Both debonding and pullout depend on the quality of the matrix, as well as on the embedded length of the carbon fiber. In this paper, all fiber pullout tests were carried out using high strength carbon fibers, both without fluorinationed and with fluorinationed carbon fiber.