EFFECT OF ADDITION OF FLY ASH ON SHRINKAGE CHARACTERISTICS IN HIGH STRENGTH CONCRETE

This paper presents the results of an experimental investigation carried out to evaluate the shrinkage of High Strength Concrete. High Strength Concrete is made by partial replacement of cement by fly ash. The shrinkage of High Strength Concrete has been studied using the different mixes from a minimum of 10% to maximum of 70 %. From the test results of the above investigation it can be concluded that the shrinkage strain of High Strength Concrete increases with increase in fly ash content. The rate of increase in shrinkage with time is uniform for low fly ash content, whereas it generally increases after 28 days for high volume of fly ash and the high volume fly ash concrete yields slow strength development at an early age