### HOW TO ESTIMATE YIELD OF CONCRETE FOR VOLUME .

Aug 12, 2015· Example Calculation. Estimate the yield of concrete per bag of cement for a concrete mix of proportion (1:2:4). By Rule of Thumb. A bag of cement containing 50 kg of cement is considered to have a volume of m 3. Therefore a = m 3. Then volume of sand becomes, b = 2* m 3. And volume of coarse aggregate becomes, c = 4* m 3