Q. The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be _________

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Q. The unit weight of heavy weight concrete varies from __________ kg/m³.

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Q. The use of crushed aggregates may results in 10 to 20% higher compressive strength.

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Q. S.I. unit of bulk density is?

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Q. What is void ratio?

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Q. The average specific gravity of natural aggregate is?

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Q. Pick up the most appropriate statement from the following.

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Q. The ratio of the mass of the aggregate dried in an oven at ___________ for 24 hours to the mass of the water occupying a volume equal to that of solid.

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Q. Aggregate abrasion value is determined by__________

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Q. What do you mean by bulking?

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Q. Fine aggregate do not show any bulking when it is absolutely dry.

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Q. What is the percentage of bulk if fine aggregates manufactured by extremely fine sand?

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Q. Bulking ___________ with increase in moisture.

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Q. Fine sand bulks __________ than coarse sand.

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Q. If h = height of sand when moist and h1 is the height when saturated then what is the percentage of bulking?

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Q. Which apparatus we don’t need to calculate the bulking of fine aggregates?

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Q. What is bulking of coarse aggregates?

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Q. If the moisture content of 5 to 10% by weight, then the bulking of sand is increased by __________

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Q. When sand is fully dry then it’s volume is ____________

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Q. What is soundness?

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