Cement : Sand : Gravel
1 : 3 : 6
I don’t know
4500
How to mix 4500 psi cement?
Generally speaking, concrete is rated anywhere from 2000 psi to 10,000 psi. Of course if you do NOT use the proper ratio of aggregate (usually sand) to cement and water you can make concrete that is even weaker. When concrete is ordered from a delivery company, you specify the strength of he mix or pour that you want.
We now have more accurate ways to make the mixture. It was commonly believed that a "5 sac mix" was 3000 psi. Now you just order by the psi you want.
Start with 2000 of P then add 1000 of S an at the end add 1000 of I mix it very good .After about 45 days you will have 4000 p,s and I which stand for 4000 PSI
$93.50 for a yard of fiber reinforced 2500 psi concrete in the Newnan, Ga area. As of 01/01/08
If is standard concrete it is usually 3000 psi mix
4500
How to mix 4500 psi cement?
Generally speaking, concrete is rated anywhere from 2000 psi to 10,000 psi. Of course if you do NOT use the proper ratio of aggregate (usually sand) to cement and water you can make concrete that is even weaker. When concrete is ordered from a delivery company, you specify the strength of he mix or pour that you want.
We now have more accurate ways to make the mixture. It was commonly believed that a "5 sac mix" was 3000 psi. Now you just order by the psi you want.
Start with 2000 of P then add 1000 of S an at the end add 1000 of I mix it very good .After about 45 days you will have 4000 p,s and I which stand for 4000 PSI
Concrete is ordered in terms of what strength it will be when it is dried a cured. For instance a typical mixture for an engineered foundation would be 3000 psi. Most driveways are 2500 psi. Check your local codes. Some county's require 3000 psi for the approach and any sidewalk which adjoins their street.
500psi
FOR WINTER MIX CONCRETE IN THE NYC AREA AS OF FEBRUARY 2012 THE COST FOR 3200 psi CONCRETE IS $114 PER CUBIC YARD
3000 psi concrete weighs Approx 3900 Lb/yd3
Approximately 3.56 psi.