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Concrete Technology
The 28 days cube strength of mass concrete using aggregates of maximum size 5 cm for gravity dams should be
between 150 to 300 kg/cm2
between 350 to 600 kg/cm2
between 150 to 500 kg/cm2
below 200 kg/cm2
none of these.
Correct Answer:
below 200 kg/cm2
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