Conservative estimates put concrete cylinders at 80 of concrete cubes for high strength.
High strength concrete mix proportions.
Concrete strength measured using concrete cubes produce a results different than concrete cylinders.
The type of concrete generally with compressive strength of 6000psi 40mpa or greater is called as hsc we need high strength concrete in our modern infrastructures in order to put the concrete into service at much earlier stage to build up high rise building by reducing column sizes and increasing available space or in case of long span bridges.
In this type of mix this nominal concrete mix ratios and concrete constituent proportions are prefixed and specified.
The strength of this mix ratio is good for most concrete slabs footings steps and foundation walls.
You have now made ultra high performance concrete with strength of approximately 30 000 psi.
Mix all ingredients for 5 minutes to blend the water.
Mix the ingredients for another 5 minutes and then you are done.