Evaluation and Mix Design for Ternary Blended High Strength Concrete

Concrete has been the most widely used construction material for several years. Though conventional concrete (CC) performs very well under normal conditions, in special situations a very high compressive strength of concrete together with sustainability to aggressive environments is necessary. Hence, higher compressive strength of range more than 60 MPa is essential. So far, concrete mixes were designed only for strength and workability requirements. For the performance of long satisfactory life, the designed mixes should be checked and proved for their durability properties such as low permeability, high corrosion resistance, freezing and thawing resistance, fire resistance etc. This necessitates a detailed study on High strength concrete (HSC). This paper formulates a simplified mix design procedure for HSC by combining BIS and ACI code methods of mix design along with available literatures on HSC. Based on the above procedure M60 mix of ternary blended high strength concrete with different percentage replacement of cement by metakaolin (MK) and redmud (RM) is arrived at. These HSC mixes are tested experimentally for compression, split tension, flexure and workability. The performance of the designed mixes is very good and the results are reported in this paper.