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Topic: Pozzolana

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	Tata Chemicals \| Products \| Chemicals \| Cement \| Pozzolana portland cement
		Pozzolana Portland Cement derives its name from the volcanic ashes of the Pozzuoli volcano in Italy.
		Pozzolana Portland Cement is one of several types of cement which are used for special purposes.
		Pozzolanas are materials which, although they do not have cementing properties in themselves, will combine chemically with Portland cement in the presence of water to form strong cementing material.
	www.tatachemicals.com /0_products/chemicals/cement/pozzolana_portland_cement.htm (372 words)

	Portland Cement Manufacturers,Portland Pozzolana Cement,Portland Cement India
		Combining our rich industrial experience, in-depth product knowledge and sharp business acumen, we are engaged in the manufacturing, exporting and distribution of top quality Cement like portland pozzolana cement, ordinary portland cement and sulphate resistance cement that forms the foundation of numerous solid constructions.
		IS 1489 (Part 1) 1991, Portland Pozzolana Cement - specification (fly ash based)
		The PPC produces less heat of hydration and offers greater resistance to the attack of aggressive waters than normal Portland Cement.
	www.veerabhadrainternational.com /cement.html (999 words)

	Cement - Open Encyclopedia (Site not responding. Last check: 2007-09-11)
		These materials are more properly known as hydraulic cements.
		Gypsum plaster, common lime, hydraulic limes, natural pozzolana and Portland cements are the more common hydraulic cements, with Portland cement being the most important in construction.
		Hydraulic cement was first invented by the Egyptians, and later reinvented by the Greeks and Babylonians, who made their mortar out of lime, much harder than the Roman mortars.
	open-encyclopedia.com /Cement (195 words)

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