The cement becomes useless if its absorbed moisture content exceeds

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• Bulking of sand is maximum if moisture content is about
• To ensure constant moisture content in aggregates
• Increase in the moisture content in concrete
• The most useless aggregate is one whose surface texture is
• The cement whose strength is a little lower than the ordinary cement during the first three months but attains afterwards the same strength, is known as
• As compared to ordinary Portland cement, high alumina cement has
• As compared to ordinary Portland cement, use of pozzolana cement
• The aggregate containing moisture in pores and having its surface dry, is known as
• When shear stress exceeds the permissible limit in a slab, then it is reduced by
• The preliminary test is repeated if the difference of compressive strength of three test specimens, exceeds