### What is the mix ratio of m55 and m65 concrete? - Quora

2018-03-14· Mix ratio of m55 and m65 is based on design mix only Designing high strength concrete – HSC (Grades M55 and above) become a challenges in terms of selecting right proportions of conventional concrete ingredients (cement,sand and aggregate) and necessary inclusions of Chemical admixture (one or more) and Mineral admixture (one or more).