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    To carry out this test, a sample of dry sand weighing 50 grams, free from clay is placed on the topmost sieve bearing series equivalent number 6. A set of standard testing sieves having Bureau of Standard Meshes 6, 12, 20, 30, 40,50, 70,100,140,200 and 270 are mounted on a mechanical shaker.

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    If a green sand contains 9% clay (by weight), the proper amount of water (by weight) to provide the best combination of green compressive strength and .

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  • Top 6 Important Quality Tests Of Concrete

    05/08/2015 · 5. Water Absorption Test. Here is the other test that would determine the durability of concrete. The three cube sample shall be taken from the delivered fresh concrete and kept it in the curing tank for 28 days or after 24 hours the concrete sample would be demoulded and it will be sent directly to the approved thirdparty laboratory to ensure its curing.

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