Properties of Concrete Using Fly Ash and Calcium Carbide Residue as a Cementitious Material

Abstract

This research aims to study the properties of concretes using fly ash and calcium carbide residue as a cementitious material. Fly ash was mixed with calcium carbide residue at a ratio of 70:30 by weight and then was interground until the amount of particles retained on a 45 - µm sieve (sieve No. 325) were less than 3% by weight. Slump loss, compressive strength, chloride penetration resistance, and abrasion resistance of concretes were investigated. The results showed that the slump loss of concrete using fly ash and calcium carbide residue as a cementitious material (FACR) was faster than control concrete. Strength development of FACR concrete at early age was slower than control concrete. However, the compressive strength of FACR concrete could be as high as 359 ksc without cement in the mixture. Morever, the chloride penetration resistance of FACR concrete was better than that of control concrete. Finally, FACR concrete had weight loss due to abrasion same as that of control concrete when both of the concretes had the same compressive strength.