Polymer and steel fiber-reinforced cementitious composites under impact loading-part 1: bond-slip response

摘要

In this two-part paper, the response of polymer and steel fiber- reinforced cement-based composites to impact loading is investi- gated. In Part 1, single-fiber pullout tests were conducted and the fiber-matrix bond-slip responses were obtained. In Part 2, results from toughness tests performed on fiber-reinforced concrete beams under impact are reported and correlated with the bond- slip responses. A straight, undeformed polyolefin fiber, two lengths of a sinusoidally deformed polypropylene fiber, and a flat-end steel fiber were investigated.