STUDY ON STRENGTH OF SISAL FIBER REINFORCED CONCRETE WITH ADDITION OF FLY ASH

In this current era, there are some concerns of using synthetic fibres in regards to their impact on the environment since they are non-recyclable and non-degradable. There are many attempts by various groups of engineers and researchers to use natural fibres in engineering applications, in the hopes of replacing synthetic fibres with natural fibres. Natural fibres are used since many centuries for different purposes since the beginning of civilization. They have been used for ropes, toughening of pots etc since many centuries. Natural fibers are of two types. Natural inorganic fibers such as Basalt, Asbestos etc and the other are the natural organic fibers such as coconut, palm, kenaf, jute, sisal, banana, pine, sugarcane, bamboo etc. The natural fibers are investigated by different researchers as construction materials that can be used in cement paste/mortar/concrete. The present work is carried out to evaluate the compressive, Tensile as well as Flexural strength of concrete using sisal fibres as reinforcement. By using fibre percentage, effect on strength of concrete specimen for various combinations is studied. The fibre diameter was first observed through micrometer gauge and was seen to be average 0.3mm. Fibres used with percentage of 0.05%, 0.1%, 0.15% and 0.2% were used for the work. Normal M25 mix was used for the study. The experimental work was carried out for three different combinations. The obtained specimens were subjected to tests ai med to check the compression, split tension and flexural strength.