· CONCRETE MIX DESIGN AS PER IS 10262:2009 ... Standard Mixes – • The minimum compressive strength has been included by IS456:2000 in many specifiions. These mixes are termed standard mixes. • : M10, M15, M20, etc. 3. Designed Mixes • In these mixes the performance of the concrete is specified by the designer but the mix proportions are determined by the producer of concrete ...