DURABILITY PROPERTIES OF STEEL FIBRE REINFORCED CONCRETE WITH BOTTOM ASH AS A PARTIAL REPLACEMENT FOR SAND

Abstract

A number of experimental works were carried out to analyse and assess different properties of concrete, which is the commonest building material. A main concern in producing concrete is the non availability of river sand. It is observed that river sand has become a depleting material. An alternate material has to be chosen and proved experimentally for replacement. Bottom ash is one such material which exhibits properties similar to those of sand and hence could partially replace river sand. Various research studies are currently being conducted on bottom ash as an alternative to river sand. In this particular paper, the durability aspect of concrete using bottom ash is studied by replacing one fourth of the quantity of sand. Steel fibres are introduced in the same concrete to improve the resistance to crack formation. Here, steel fibres at the rate of 2% of the weight of cement, were added. Resistance of this concrete to acid and alkali attack were studied. Rapid chloride penetration test and water absorption test were also conducted. The results exhibited are in a permissible range which suggests the use of bottom ash for replacing sand, partially