Glass Fiber Reinforced Concrete

The present dissertation work is directed towards developing a better understanding on strengths characteristics of concrete using GFRC. Dissertation work is carried out with M25 and M30 grade concrete with w/c ratio of 0.44 and 0.39 as a control specimen. and GFRC as percentage varies from 0%,1%,2%and 3% it act as test specimen. For all the mixes compressive, flexural and split tensile strengths are determined at different days of curing. The results of the present investigation indicate that GFRC incorporation results insignificant improvements in the compressive, flexural and split tensile strengths of concrete upto 3%. Standard concrete cubes (150X150X150 mm), cylinders (150x300 mm), prisms (100x100x500 mm) as well as beams (150x150x700 mm) were tested. The physical properties of glass fibre reinforced concrete and its influence on the strength of concrete in the fresh and hardened state, along with a comparative study with the concrete prepared using river sand are also included. The strength in direct compression at 7 days, 14 days and 28 days, and that in split tension and flexure were compared at 28 days. Compressive strength of cubes, Flexural strength of prisms, Split tensile strength of cylinders for conventional concrete as well as GFRC concrete is tested at 7 days, and 28 days of curing.