A STUDY OF WORKABILITY OF DIFFERENT GRADE OF HIGH VOLUME FLY ASH CONCRETE WITH SLUMP TEST ANALYSIS
Assistant Professor, Department of civil engineering, Dr, Jivraj Mehta institute of technology, Mogar, India
ABSTRACT
Global warming has emerged today as a life-threatening issue for the whole world. Since concrete is one of the most consumed material after water on the earth for infrastructure & construction industries, a commendable contribution can be made by optimizing the use of cement and natural resources in concrete manufacturing. High volume fly ash concrete is one of the major developments since last decade leading to utilization of fly ash in a bulk quantity and thereby reducing cement consumption and ultimately reducing CO2 in order of one ton per a ton of cement. The past research has been given due weight age for application of HVFA in different sectors like mass concrete, foundation, transportation etc. but the limitations of HVFA like ductility, poor performance towards expansion and contraction, flexural property, impact resistance have made its use limited. Introduction of structural/non structural with HVFA concrete application can overcome these problems and use of HVFA can be increased in developing nation like India for sustainability. Looking to the production of the Fly ash, worldwide in general and India in particular the utilization of Fly ash is almost negligible. The HVFAC is typically characterized by Very low water content, with Low cement content. Also very high fly ash content, withVery low water to cementatious ratio.it requires the use of super plasticizer to achieve the desired workability.
