Partial substitution of the cement by cinder power in the composition of High Strength Concrete (HSC)

Abstract

The current experimental inquiry in this work aims to produce high strength concrete of grade M80 by using cinder powder as a substantial replacement for conventional Portland cement. ACI 211-4R was used to develop the mix design for M80 concrete mix. The concrete samples are subjected to hardened property tests. The specimens were made with several percentages of cinder replacement, such as 0%, 2.5%, 5%, 7.5%, and 10%, and binder ratios of 0.35 with super plasticizer. To ascertain the compressive strength of the concrete, the concrete's compressive strength, cubes of 100 × 100 × 100 mm are cast. By casting cylinders with a diameter of 100 mm and a height of 200 mm, it is possible to determine the tensile strength of concrete. At the age of 28 days, this mixture's compressive strength was found to be 92.25 MPa, and the best results were obtained when cinder powder was substituted for OPC in 5% of the mix together with super plasticizer and 0.35 water to binder ratio. Similarly split tensile and flexural strength performance have been upgraded upto 25.31% and 16.32% with for optimized 5% substitution of cinder powder compared to control concrete.