Mechanical properties of concrete using annealed wire fibers

Abstract

Abstract This study discusses the mechanical properties of concrete using annealed wire fiber which includes compressive strength, splitting tensile strength and flexural strength. The composition of the fiber used is 0.75% of the volume of concrete with a diameter of 0.8 mm fiber and the length of the fiber varied 36 mm, 48 mm and 60 mm or aspect ratio L/d of 45, 60 and 75. Test specimens used in this study are cylinders measuring 100 mm x 200 mm as many as 24 pieces and beam measuring 100 mm x 100 mm x 400 mm as many as 12 pieces. The test was performed after 28 days of concrete with the UTM tool using ASTM C-39, C-496 and C-78 standard for compressive strength test, splitting tensile strength test and flexural strength test. The result of this research shows that there is an increase of mechanical properties of concrete for compressive strength of 3.75% to 33.56%, a tensile strength of 3.35% to 32.62% and flexural strength of 9.94% to 42.14%. For maximum compressive strength for 48 mm fiber length while tensile strength and maximum flexural strength for 60 mm fiber length.