I want to do a flooring of my new house by Cement:Sand (1:3)ratio and would like to know the quantity of cement needed per square meter for plastering. The floor thickness will be 2~3mm.
First of all flooring work by cement mortar is not at all permitted by Indian Standard Code. 3mm thick plastering with cement mortar ( 1:3) is also non specified item. However for 3 mm thick plaster with 1:3 proportion requires 3 kg. per Sqm . But as the plastered surface is not enough as flooring so the top surface to be finished with a coat of neat cement. Cement requires for neat finishing is 1.75 Kg/Sqm.
Simple LxWxH Length times width x height
You need to calculate the volume of your floor Assume a 1 square meter area and assume the thickness is .3 mm (not .2) The volume would then be = 0.0003 m x 1 m x 1m = 0.0003 cubic meters Volumetricly, you need 1/4 part concrete + 3/4 parts sand to equal 0.0003 cubic meters. The concrete volume would then be 0.000075 cubic meters concrete per 1 square meter of floor (at .3 mm thickness).... or 75 cubic centimeters per sq meter The density of Portland cement is about 3 g per cubic centimeter therefore 3 g/cm3 * 75 cm3 = 225 grams or 0.225 kg of cement per square meter of floor
