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Cement is a material that hardens and sticks to other materials to hold them together. Portland cement is a common kind, and made from quicklime (heated limestone) and clay. Cement is used to make concrete and mortar. Cement is widely used for plastering and rendering. Plastering is done for the inner walls, and cement rendering is done for the exterior walls. Cement rendering is also used to clad brickwork on either exterior, interior, or boundary walls. This keeps brickwork protected from rain and water.
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