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  1. Chemistry

    Cement materials can be classified into two distinct categories: hydraulic cements and non-hydraulic cements according to their respective setting and hardening mechanisms. Hydraulic cement setting and hardening i… See more

    History

    Perhaps the earliest known occurrence of cement is from twelve million years ago. A deposit of cement was formed after an occurrence of oil shale located adjacent to a bed of limestone burned by natural causes. Th… See more

    Types

    Modern development of hydraulic cement began with the start of the Industrial Revolution (around 1800), driven by three main needs:
    • Hydraulic cement render (stucco) for finishing bri… See more

    Setting, hardening and curing

    Cement starts to set when mixed with water, which causes a series of hydration chemical reactions. The constituents slowly hydrate and the mineral hydrates solidify and harden. The interlocking of the hydrates gi… See more

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