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http://dx.doi.org/10.9711/KTAJ.2022.24.4.317

Experimental study on pullout performance of structural fiber embedded in cement composites according to fineness modulus of fine aggregate  

Choi, Chang-Soon (Dept. of Civil Engineering, Inha University)
Lee, Sang-Don (Korea Expressway Corporation Research Institute)
Song, Ki-Il (Dept. of Civil Engineering, Inha University)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.24, no.4, 2022 , pp. 317-326 More about this Journal
Abstract
This research performed single fiber pull-out test to evaluate the effect between fineness modulus of cement composites and the fiber bond performance (bond strength and pull-out energy). A synthetic fiber (polypropylene) and a steel fiber (hooked ends type) were inserted in the middle of dog bone shape specimens which were designed with fine aggregates of F. M. 1.96, 2.69, 3.43. The experiment results showed bond strength and pullout energy of synthetic fiber are improved as fineness modulus of cement composites increases. It is considered that the frictional resistance between synthetic fiber and cement composite increases as fineness modulus of cement composite increases and consume more energy while pull out the fiber from cement composite. However bond performance of steel fiber which resist pull out by mechanical behavior is less effected on fineness modulus of cement composite. It is considered that the mechanical fixedness of hooked ends exerts a greater effect on the pullout resistance than the frictional resistance between the cement composite and the steel fiber so F. M. of fine aggregate has a relatively small effect on the pullout resistance with the steel fiber.
Keywords
Pullout performance; Cement based composites; Fineness modulus (F. M.); Structural fibers; Pull-out test;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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