Alireza Jafari Nodooshan - B.S. of Civil Engineering, Faculty of Engineering and Science, University of Science and Art,Yazd, Iran,

Powdered concrete is a material that can compete with high-performance concrete and steel. Depending on the properties and cost, this concrete can replace steel in many cases, which is currently being studied in many countries. In this study, using steel fibers, its effect on the compressive strength of reactive powder concretes at the ages of ۷, ۲۸ and ۹۰ days, and its results with the control sample (without fibers) have been investigated. A compressive strength test was performed on concrete mixing designs containing ۱, ۵, ۷.۵ and ۱۰ kg/m۳ of steel fibers, which were combined following the regulations of the mixing design. The results show that the sample containing ۷.۵ kg/m۳ of concrete fibers at ۷, ۴۲ and ۹۰ days of age has more compressive strength than the control samples containing ۱, ۵ and ۱۰ kg/m۳ fiber.

Concrete, Compressive Strength, Reactive powder concrete, Steel-Fibers