International Research Journal of Engineering and Technology (IRJET) Volume: 09 Issue: 07 | July 2022
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e-ISSN: 2395-0056 p-ISSN: 2395-0072
STUDY ON STRENGTH OF CONCRETE BY PARTIAL REPLACEMENT OF CEMENT WITH ALKALI RESISTANT GLASS FIBRE AJITH KUMAR1, CHETHAN L K2, YOGESH D3, DHARANESH M P4 1Asst. professor, Department of Civil Engineering, Channabasaveshwara Institute of Technology, Gubbi, Tumakuru , India. 2,3,4 Students, Department of Civil of Engineering, Channabasaveshwara Institute of Technology, Gubbi, Tumakuru, India. ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract - In the whole world concrete is mostly used
started using supplementary cementitious materials and admixtures in concrete, often without adequate considerations.
material in mass quantity for a construction. It is expected that in the near future, the Civil Engineering community will have to produce structures in hormony with concept of sustainable development. A number of studies have been carried out to investigate the possibility of utilizing a broad range of materials as partial replacement material for cement in the production of concrete using various different materials. Alkali Resistant Glass Fibers are designed specially for use in concrete. The project deals with the investigating characteristics of M20 concrete with partial replacement of cement with Glass Fiber. The scope of present investigation deals with the strength properties of concrete, on the effect of partial replacement of cement by Glass Fiber with different percentage (i.e., 1.5%, 3%). The tests are conducted to find out the compressive strength, split tensile strength, at the age of 7days and 28 days.
Concrete is most widely used construction material as several desirable properties like high compressive strength stiffness and durability under usual environment. At the same time concrete is brittle and weak in tension. These problems can be minimized by usage of glass fibers in concrete. By adding this fibers cracking strength of concrete can be increased. At the same time concrete is brittle and weak in tension. These problems can be minimized by usage of glass fibers in concrete. By adding this fibers cracking strength of concrete can be increased.
2. MATERIALS USED
Key Words: Alkali Resistant Glass Fiber, Compressive strength, Split tensile strength, M20 Concrete.
2.1 Cement Cement ordinary Portland cement of 53 grade (ultra tech) conforming to IS:12269-1987 was used through out the experiment. The Specific gravity of cement is 3.1, the Fineness modulus of cement is 5.4%, the initial and final setting time of cement are 38 min and 480 min respectively.
1.INTRODUCTION Concrete is most widely used man-made construction material in the world. It is obtained by mixing of two components I.e., aggregate and paste. Usually the paste is mix of Portland cement and water, binds the aggregate (usually sand and gravel or crushed stone) into a rocklike mass known as Concrete. The hardening is because of the chemical reaction of the cement and water, which continue for long period leading too stronger with age. The usefulness elegance and the durability of concrete structures, built during the first half of the last century with ordinary portland cement (OPC) and plain round bars of mild steel. The easy availability of the ingredients (compromising quality) of concrete was used. Strength was emphasized without a thought of the durability of structures. As a consequence of the liberties taken, the durability of concrete was highly affected. After 1970 or thereabout the use of high strength tensile bars with surface deformation started. Significant changes in constituents and properties of concrete were initiated and Engineers
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2.2 Manufactured-Sand (M-Sand) Locally available M-Sand passing through 4.75mm IS Sieve having Specific gravity of 2.62 and fineness modulus of 2.4 was used. The M-Sand was dried in sun light before it is used for standard design mix concrete.
2.3 Coarse aggregate 20mm down size natural crushed stone having specific gravity of 2.65 and water absorption of 0.39% was used.
2.4 Water Locally available portable water is used. Water is important ingredient for strength and durability characteristics of concrete.
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