mycem primo is Blended Cement with attractive and water tight packaging, prevent cement from hydration due to atmospheric moisture and remain intact in its quality till it gets open with in time frame as per BIS.. Here also the secondary reaction of High Reactive Silica (HRS-pozzolana) present in mycem Primo reacts with Ca(OH)2 (liberated by the hydrating Portland cement) in the presence of water forming stable Calcium Silicates Hydrate (CSH Gel) that have the cementitious properties and gives more strength to cement and its works. It has better particle size distribution with max particles within range of 3 to 30 micron, helps in getting cohesive mix, crack free durable construction.