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Which of the following statement is incorrect for mixing water?(a) Suspended particles of clay and slit < .02%(b) The quality of CaCl2 is restricted to 1.5%(c) The pH value of water should be between 6-8(d) Free vegetable oil is beneficialThis question was addressed to me in a national level competition.Question is taken from Quality of Water in section Water of Concrete Technology |
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Answer» RIGHT option is (d) Free vegetable oil is beneficial To explain: Free vegetable oil is HARMFUL but MINERAL oil up to 2% is beneficial to CONCRETE for making HEALTHY structure. |
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