ASSESSMENT OF COMPRESSIVE STRENGTH, SPLIT TENSILE STRENGTH AND FLEXURAL STRENGTH OF CFRC WITH FLY ASH

Abstract

Research carried out in past suggest improvement in compressive strength and flexural strength using carbon fibre. Use of
byproducts obtained in thermal power plants Viz. Fly ash Poses a lot many problems and has to be reused or safely disposed. In
this dissertation fly ash has been used to replace cement resulting in reduction in the cost. Various fly ash percentages were tried
for various grades of concrete and from view point of obtaining maximum compressive strength optimum fly ash percentage was
found. For grades M20, M25, M30 20% cement has been replaced by fly ash. For grades M35 and M40 16.5% and 12.5% cement
has been replaced by fly ash. Using above optimum fly ash percentage carbon fibres were added as 0.4%, 0.5% and 0.6% by
weight of cement and compressive strength of concrete at 3, 7 and 28 days of curing were determined and 7 day flexural strength
of concrete for various carbon fibre percentages as above. Also, Split tensile strength was determined.