FIBER REINFORCED CONCRETE N Banthia纤维增强混凝土N沈荣熹.pdfVIP

FIBER REINFORCED CONCRETE N. Banthia Synopsis: The usefulness of fiber reinforced concrete (FRC) in various civil engineering applications is indisputable. Fiber reinforced concrete has so far been successfully used in slabs on grade, shotcrete, architectural panels, precast products, offshore structures, structures in seismic regions, thin and thick repairs, crash barriers, footings, hydraulic structures and many other applications. This paper presents a brief state-of-the-art report on mechanical properties and durability of fiber reinforced concrete. In particular, issues related to fiber-matrix interaction, reinforcement mechanisms, standardized testing, resistance to dynamic loads, and transport properties are discussed. Keywords: FRC, fiber reinforced concrete, fiber-matrix interaction, dynamic loads 1 Nemkumar Banthia is a Professor and Distinguished University Scholar at the University of British Columbia, Vancouver, Canada. A fellow of the ACI, the Canadian Soc. of Civil Engg., Indian Concrete Institute and the Canadian Academy of Engineering, his awards include the Wason Medal of the ACI and the Solutions through Research Award of the Innovation Council of British Columbia. INTRODUCTION Compared to other building materials such as metals and polymers, concrete is significantly more brittle and exhibits a poor tensile strength. Based on fracture toughness values, steel is at least 100 times more resistant to crack growth than concrete. Concrete in service thus cracks easily, and this cracking creates easy access routes for deleteriou