Answer / naveen

A ratio can not be given directly that suppose to be a
desgin mix and after testing the material property only a
ratio can be arrived at.

Answer / shunmugapriya

it is based on design mix only. i think we can fix by
using trial error method

Answer / uday

1:1.65:2.76

Answer / shaikh parvez

Approximately 1:.75:1.5

Answer / annan

1:.7:1.74

Answer / shankar

1:4:8

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