This document provides a review of experimental studies on fiber reinforced concrete blended with fly ash and metakaolin. It discusses three main points: 1) Previous studies have found that adding recron fibers to concrete increases its compressive, tensile, and flexural strengths. It reduces cracking and permeability. 2) The addition of fly ash and metakaolin as cement replacements is also found to improve concrete properties like strength and durability. Metakaolin increases strength while fly ash reduces costs. 3) Engineered cementitious concrete (ECC) is a ductile fiber reinforced concrete without coarse aggregates. Studies show ECC can withstand higher tensile strains than normal concrete due to its fiber reinforcement and crack-cont