Concrete Strength Acceptance Criteria IS:456-2000
By KAUSHAL KISHORE Materials Engineer, Roorkee. Strength of concrete is commonly considered its most valuable property, although in many practical cases, other characteristics, such as durability and permeability, may in fact be more important.m20 concrete compressive strength - abwasseranlagen,Concrete is known by its grade which is designated as M15, M20 etc. in which letter M refers to concrete mix and number 15, 20 denotes the specified compressive strength (fck) of 150mm cube at 28 days, expressed in N/mm2.Comprasion of Compressive Strength of M20 Grade Fly Ash,,4.3 Compressive Strength Of M20 Grade Ordinary Portland Concrete The compressive strength of M20 grade ordinary Portland concrete can be calculated for 3 days, 7days, 14days and 28 days. The strength values can be given below table.