The Resistance of Penertation of Fiber Reinforced Concrete Slabs Subjected to LowVelocity Impact Loading

• Main Authors: Chen-Liu Choug, 周承劉
• Other Authors: Fuw-An Chang
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/03705401877174662943

碩士 === 國防大學中正理工學院 === 軍事工程研究所 === 90 === This paper discusses the behavior of penetration resistance of plain concrete slabs、polypropylene fiber concrete slabs (with volume fraction 0.1%、0.2%) and steel fiber concrete slabs (with volume fraction 1%、2%) under quasistatic and low velocity impact. The concrete matrix was of two types : 14 MPa and 28 MPa. We conducted perforation experiments with 50 diameter, flat nose shape steel rods and 550 square, 40 thick concrete slabs with four types of impact velocity : 0.0217 、1.2 、3000 and 7000 . Test results indicate that steel fiber concrete slabs have better cracking and energy absorption characteristic than polypropylene fiber concrete slabs and plain concrete slabs. Slabs reinforced with more fiber volume fraction and high strength have the higher energy absorption than other slabs. The increase in fracture energy of slabs with normal strength and 1%、2% steel fibers compare to plain concrete slabs was about 214%、243% , and the increase in fracture energy of slabs with high strength and 1%、2% steel fibers compare to plain concrete slabs was about 427%、512% .