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Bags of Portland cement wrapped and stacked on a pallet.
Bags of Portland cement wrapped and stacked on a pallet.
Blue Circle Southern Cement works near Berrima, New South Wales, Australia
Blue Circle Southern Cement works near Berrima, New South Wales, Australia
Plaque in Leeds, England commemorating Joseph Aspdin
Plaque in Leeds, England commemorating Joseph Aspdin
William Aspdin is considered the inventor of "modern" Portland cement.
William Aspdin is considered the inventor of "modern" Portland cement.
Cement
Cement powder being poured from a bag, ready to be mixed with aggregates and water.
Cement powder being poured from a bag, ready to be mixed with aggregates and water.
Clinker nodules produced by sintering at 1450 °C
Clinker nodules produced by sintering at 1450 °C
Calcium oxide obtained by thermal decomposition of calcium carbonate at high temperature (above 825 °C).
Calcium oxide obtained by thermal decomposition of calcium carbonate at high temperature (above 825 °C).