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Concrete is the most familiar building element. The densest and strongest concrete is that in which cement paste fills the voids with the sand and the resulting mortar fills the voids in the coarse aggregate. Every grain of sand should be entirely coated with cement. Before the invention of the mixing machine, the entire mixing process used to be done by hand, shovel, shallow box. But now due to the high demand in construction, different types of mechanical procedures and machines are used for m
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