Plaster Mix

[Contech2011]

Hi,

To calculate proportions by weight of a plaster mix 1 : 4 by volume we need to multiply the dry densities of cement & sand with the volume proportions. How much cubic of fresh plaster mix does it give you after mixing with water say W/C = 0.45 ?

Absolute vol method of calculating the proportions will lead to erreneous proportions by vol.

We need a fresh plaster mix of 1 cubic meter batched by weight and proportioned by volume in 1:4 ratio with W/C = 0.45. Your comments plz...

 

[Ron]

Is this an interior or exterior plaster and are you using portland cement and sand?

 

[dicksewerrat]

Make it easy. Mix three trial batches and measure the volume. average them. If you want a better number mix three more. Hint. They don't need to be 1 cubic yard batches.

Richard A. Cornelius, P.E.

http://WWW.amlinereast.com

 

[Contech2011]

Yes, we are to use OPC cement with sand and it is internal plaster. I am still not clear. plz advice.