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Types of Cement

Natural Cement

Natural cements are hydraulic cements produced by mining natural deposits of limestone and clay with specific chemical composition within a narrow range. When heated in a kiln, and ground to a fine powder, this type of cement is produced, that, like Portland cement, sets and hardens when mixed with water through chemical reactions.

Strength and uniformity of natural cements are lower than those for Portland cements, but these are much more accurate materials for use on many historic restoration projects, which is their primary application.

Natural cements were extensively used in 19th and early 20th century construction in U.S, and many historic structures were built with these materials. However, with improved technology for producing portland cements, sales of natural cements began to decline in the late 1800s, stopping entirely by the mid-1970s.

FAQ

Why is usage of Natural Cement almost negligible?

FUAQ

Why is Natural Cement slow hardening?