Cement mortar is a well-known partner of concrete hollow blocks (CHB) and other masonry blocks. It's used for protective and decorative coating of walls. Cement plaster material quantity can be estimated in a variety of methods. One of the easiest and fastest ways to estimate cement plaster material quantity is also by area method.
Plaster can be applied in varying thicknesses with the suggested thinnest thickness at 8mm and the thickest at 25mm.
Same with concrete, plaster’s compressive strength depends on your material’s mixture and proportions. You should select your plaster mix class according to your desired mix strength.
Determine the area of your wall. The formula for a square wall is Length * Height.
Make sure to take into consideration the often-overlooked information that will affect the area of your wall – for example, the depth of your beam or the underground foundation CHB.
Make sure to take into consideration how many wall faces are to be plastered.
Compute for the quantity of cement and sand needed for a Class “B” plaster mix of a standard 4” CHB wall, plastered at both sides and is 3 meters high and 2 meters long.
Specified plaster thickness = 16mm
Specified mortar mix = Class “B”
Square Wall Area = Length * Height
= 2m * 3m
Specified number of faces = 2 sides
Quantity of Cement Bags = Area * Cement multiplier for a Class “B” mix
= 6m2 * 0.192
= 1.152 bags ~ 2 bags
Quantity of Sand = Area * Sand multiplier for a Class “B” mix
= 6m2 * 0.016
= 0.096 m3
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