A good mix design for concrete mixtures is considered as a milestone for the construction of any concrete member or structure meets economical, service and durability requirements, as well as safety and efficiency throughout its life cycle. The objective of a mix design procedure is to determine the quantities of the main components of concrete, namely; cement, aggregate, sand and water. Currently, there are many international methods locally approved for mix designs, such as: the ACI method and the BS method, which are widely used in Libya at research centers, universities, and concrete batch plants as well as precast concrete manufacturing plants (e.g.: prestressed concrete beams, concrete columns and slabs, etc).
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