MECHANICAL PROPERTIES OF FIBER-REINFORCED POROUS CONCRETES COMBINED USE OF VINYLON SHORT-FIBERS AND MICRO-FIBERS

Abstract

The purpose of this study is to investigate the effect of combined use of vinylon short-fibers and micro-fibers on the mechanical properties of fiber-reinforced porous concretes. The fiber-reinforced porous concretes using vinylon short-fibers with the length of 40mm (F40) and micro-fibers with the length of 12mm (F12) are prepared with the F40 contents of 0, 0.3, 0.5, 0.7% and F12 contents in binder of 0, 0.4, 0.6, 1.2%. As a result, the flexural behavior of porous concrete are considerably improved by combined use of the vinylon short-fibers and micro-fibers with proper fiber contents.