One of the best concrete mix ratios is 1 part cement 3 parts sand and 3 parts aggregate this will produce approximately a 3000 psi concrete mix.
High strength concrete mix proportions.
Conservative estimates put concrete cylinders at 80 of concrete cubes for high strength.
The strength of this mix ratio is good for most concrete slabs footings steps and foundation walls.
Mix all ingredients for 5 minutes to blend the water.
In this type of mix this nominal concrete mix ratios and concrete constituent proportions are prefixed and specified.
High strength concrete mixes ratio m50 to m70 grade concrete mix ratio is manual designed e g m70 the quantity of cement sand fine aggregate and coarse aggregate are batched in volume as per the design mix.
You have now made ultra high performance concrete with strength of approximately 30 000 psi.
Allow the concrete to sit for 3 minutes after this initial mixing so that the water has a chance to penetrate all of the ingredients.