“ANALYSIS OF CHARACTERISTIC COMPRESSIVE STRENGTH OF CONCRETE USING GLASS FIBER AND STEEL FIBER”

Abstract

Strengthening the fiber reinforced concrete (FRC) with steel fibers and glass fibers in structures is a major area of research for some time now. This paper focuses on study and analysis of plain concrete strengthen with steel and glass fibers by different volume fraction (i.e 0.4, 0.8 &1.2%) In the place of fine aggregate. The conventional method of concrete strengthening with natural Fibers such as jute does not provides the satisfactory results. A lot of past researches have Established that SFRC and GFRC is a good substitute for the old methods for concrete structure. Which gives the satisfactory results. Thesis work verifies the usability if steel fiber and glass fiber for M20 grade concrete The SFRC and GFRC specimens were loaded axially in a quasi-static manner. The ultimate load and stress resistance of theses specimans were found to have enhanced in SFRC when up to 0.8% steel fibers were mixed. similarly GFRC also shows the good bounding strength when 0.8% glass fiber were mixed into concrete. It is observed that the ductility of the concrete has increased when mixed these fiber up to 0.8% and also it’s results the good resistance to the cracking growth. it is thus recommended by this thesis that the composition of steel and glass fibers in normal concrete gives the improvement in the ductile strength and provides the resistance to cracking growth. Keywords: FRC, SFRC, GFRC, Cracking, Growth, Quasi-Static Loading.