UltraTech’s Portland Pozzolana Cement is renowned for its workability. The spherical cement particles have a higher fineness value and move more freely, allowing better filling of pores. It also reduces the rate of slump loss of concrete, particularly in hot weather conditions. PPC cement also reduces bleeding with its low water content, thus blocking bleed water channels.
PPC being finer in nature, increases its paste volume, leading to an improved bond of concrete to steel. The cement also liberates lime during initial hydration thus reducing void spaces and subsequently reducing the permeability of concrete, offering the advantage of durability. It also prevents the growth of micro-cracks in the structure, which increases the strength of the structure.
Given its highly durable nature and resistance against sulphate, water and chemical attacks, it can be used for the construction of buildings near seashores, dams, marine structures, underwater bridge piers, abutments and those in aggressive environmental conditions.
Because the pozzolanic material reacts with the calcium hydroxide liberated by the hydrating Portland cement to form cementitious compounds, PPC increases the impermeability and density of the concrete. It can be used with confidence in the construction of hydraulic structures, marine works, mass concreting, and so on. It protects concrete against alkali-aggregate reactions.
