How to mix 4500 psi cement?
500psi
3000 psi concrete weighs Approx 3900 Lb/yd3
3000 psi 3500?
Blind Concrete
How to mix 4500 psi cement?
500psi
a blinding concrete is a thin layer of lean concrete
3000 psi concrete weighs Approx 3900 Lb/yd3
Main function of the lean concrete is to provide the uniform surface to the foundation concrete and to prevent the direct contact of foundation concrete from the soil. Lean concrete is used under the foundations.
It is exactly 4351 psi but generally referred to as 4500 psi.
If is standard concrete it is usually 3000 psi mix
3000 psi 3500?
Lean mix concrete is used for substructures like foundations,piles,etc.,Ready mix concrete is used for superstructures and also for mass construction.Generally, quality of ready mix concrete is good when compared to the lean mix concrete.Workability of lean mix concrete is high when compared to RMC.
Blind Concrete
rades
Dry lean concrete is used as a sub base for structural concrete. It contains much less cement and more sand compared to structural concrete.