EXPERIMENTAL STUDY ON SHEAR BEHAVIOUR OF HIGH VOLUME FLY ASH CONCRETE BEAMS by Jaskaran Singh
Abstract
In the immediate scenario construction industry utilizing concrete doesn’t promote sustainable form of development. High volume fly ash concrete deal with these cores issues and lays foundation of construction industry towards sustainability. Traditionally, fly ash used in structural concrete as a replacement or supplementary material has been limited to 10–35% cement replacement. In this experimental study laboratory exam were conducted on control concrete and concrete containing 50 % replacement of cement with fly ash that is high volume fly ash concrete. The prime intention of the research was to take note on the shear behaviour of HVFAC beams with two size of coarse aggregates (16 mm, 20 mm) at four percentage of longitudinal steel (0.8%, 1.25%, 1.8%, 2.51%) and compare this with similarly designed conventional concrete beam. From the test results it is indicated that shear strength of the beam having 20 mm aggregate tends to be more in comparison to the shear strength of beam having 16 mm aggregate in high volume fly ash concrete, when the percentage of longitudinal steel is kept same in both cases. The ultimate load carrying capacity and shear strength of concrete increases with increase in percentage of longitudinal steel of beams having same crossection in high volume fly ash concrete as well as in control concrete. Replacement of fly ash with cement in high volume fly ash concrete has led to small decrement in compressive strength of concrete.
