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The compressive strength of a concrete is determined by taking standard molded, standard-cured cylinder samples.Many factors need to be taken into account, from the cost of the various additives and aggregates, to the trade offs between the "slump" for easy mixing and placement and ultimate performance.

SCC looks very different from conventional concrete while mixing.The Colosseum in Rome was built largely of concrete, and the concrete dome of the Pantheon is the world's largest unreinforced concrete dome. The choice of a concrete mix depends on the need of the project both in terms of strength and appearance and in relation to local legislation and building codes.When aggregate is mixed together with dry Portland cement and water, the mixture forms a fluid slurry that is easily poured and molded into shape.The cement reacts chemically with the water and other ingredients to form a hard matrix that binds the materials together into a durable stone-like material that has many uses.

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