Laboratory study of metakaolin and microsilica effect on the performance of high-strength concrete containing Forta fibers

Abstract In the present study aims to produce high-strength fiber concrete containing microsilica and metakaolin. Eight mixing samples have been defined. The include control with ordinary Portland cement, replacing 10 percent of weight cement microsilica. amount was kept constant in next six designs. Three addition Forta fibers at rate 0.2, 0.5, 0.8 percent. Finally three 0.5% 8, 12% metakaolin were subjected compressive, tensile elastic modulus tests ages 7 28 days. replacement reduced slump up 5 cm. highest compressive strength, strength age days design 8 (concrete 10% microsilica, Forte metakaolin) are respectively equal 73.6 MPa, 5.55 MPa 37.49 increase 19.43%, 32.77% 15.21% compared without pozzolan additives. Also, relationship between presented. total, all had a favorable effect on resistance properties design. concern bridge engineers, especially bridges, is production very low permeability face their surroundings. Therefore, result this research can be significant contribution improving quality used constructions.