Pullout behavior of polypropylene fibers from cementitious matrix
Document Type
Article
Date of Original Version
10-1-2004
Abstract
A comprehensive experimental investigation was performed to understand the pullout behavior of polypropylene fibers from a cementitious matrix. The effect of embedded length on the pullout characteristics, the development of the interfacial bond with age of curing of matrix and the effect of exposure to degrading environments, like seawater and salt water, on the interfacial bond between the fibers and cementitious matrix were studied. The aim of these experiments was to understand the properties of fiber/matrix interface, which are of primary significance in predicting the overall behavior of fiber-reinforced cement-based composites. Polypropylene fibers have a weak bond with cementitious matrix because of smooth surface of fibers, which does not allow for sufficient friction to develop between the two. In this study a new method to improve the frictional bond by means of mechanical indentations of fibers was also proposed. The bonding performance was characterized by means of pullout tests of the plain and modified fibers from a cementitious matrix. An optimum level of fiber modification for maximization of bond efficiency was determined experimentally. © 2004 Elsevier Ltd. All rights reserved.
Publication Title, e.g., Journal
Cement and Concrete Research
Volume
34
Issue
10
Citation/Publisher Attribution
Singh, Sehaj, Arun Shukla, and Richard Brown. "Pullout behavior of polypropylene fibers from cementitious matrix." Cement and Concrete Research 34, 10 (2004): 1919-1925. doi: 10.1016/j.cemconres.2004.02.014.