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CE 85MemorandumDate: (Due date)To: Dr. WrightFrom: (Your name)Subject: Concrete mix designConcrete is a hard building material which can either be poured or spread into molds that harden to form stone-like masses. Usually, concrete is made from a mixture of gravel (or small stones), cement, sand, and water. The coarse aggregate ensures that the mass of concrete is solid and hard, increases the crushing strength of concrete, and significantly reduces the cost of concrete because it occupies the major volume. The fine aggregate fills the voids existing in the coarse aggregate, reduces cracking and shrinkage of the concrete, and helps in hardening of cement as it allows water through its voids. Cement makes the concrete impermeable by filling up the voids existing in the fine aggregate and p...
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