Pozzolana is any natural or artificial material containing silica in a reactive form. The pozzolana is in a finely divided state to allowsilica to combine with calcium hydroxide (liberated by the hydrating Portland cement) in the presence of water forming stable Calcium Silicates Hydrate that have the cementitious properties. The pozzolanic materials commonly used are
Calcined clay,
Fly ash,
Silica fumes.
The HeidelbergCement Group is a global market leader in aggregates and a prominent player in the fields of cement, concrete and other downstream activities, ranking as one of the world’s largest manufacturers of building materials. The Group employs 52,600 manpower at 2,500 locations in more than 40 countries. Although such products usually go un-noticed many a time, these are an integral part of day to day lives be it homes, offices, factories, schools, streets, motorways, bridges, tunnels, water supply and sewage systems. Making us proud it also creates us more responsible to continuously deliver products of highest standard that would over the coming years perform exceptionally under all weather conditions. Our customers, employees, shareholders as well as local partners across the globe form the core of our corporate governance. Our concern for the environment with the emphasis on sustainability continues to be our driving objective. We have obligated ourselves to build on the three pillars of ecology, economy and social responsibility.
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