) sign while you hover your mouse, that refers to a category which contains selectable items. Click to expand and click again to collapse the list.
) to view more information about the specific element.
Pozzolanic cement production: Natural pozzolans are an important component in the production of CEM II and CEM IV pozzolanic cements according to the EN 196-1 or Type I (PM) and Type IP or P according to ASTM C 595. The addition of natural pozzolans in the cement has a positive effect on heat of hydration, alkali silica reaction and permeability. The natural pozzolans are milled together with clinker up to the right granulometry in a ball mill for producing pozzolanic cement. Imerys Construction Pozzolans are mainly volcanic glasses and tuffs of very high amorphous state that are used in the production of pozzolanic cements.