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Mix design for concrete
This document provides information on concrete mix design including objectives, materials used, factors affecting mix choices, and the IS (Indian Standards) method for mix design with an example. The key concrete making materials are cement, aggregates, water, and admixtures. The IS method is a 7-step process that involves selecting a target strength, water-cement ratio, estimating air content and water requirements, determining coarse aggregate proportions, and summarizing the trial mix with adjustments for aggregate properties. An example mix design is provided for M40 grade concrete using OPC, fly ash, and superplasticizer to achieve pumpable workability.
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