Calculate the cubic meters of construction according to the actual laying, and then calculate the approximate dosage of cement and sand in proportion.
Correct proportion of cement and sand in home decoration construction;
Tile tile is 1: 3, wall tile and minor repairs are 1: 2 or 1: 2.5. This ratio is usually a weight ratio.
But now, for the convenience of calculation, decoration is often converted into floor area ratio. For example, when laying bricks, the floor area is determined, and the approximate volume of cement mortar consumption is obtained by multiplying the area by the average thickness.
Cement is a hydraulic material, while lime in mixed mortar is a pneumatic material, so cement mortar must be used for plastering walls such as toilets and kitchens. At present, mixed mortar and lime mortar are rarely used, and they are basically cement mortar, which is also the reason why cement masonry should be preserved. In order to make the cement masonry hard and firm, the cement mortar must be wetted with water, so that it can slowly harden under the action of water to achieve its due strength.
The disadvantage of mixed mortar is that its hardness is not as good as that of cement mortar.
When laying floor tiles, it should generally be 1: 3 hard mortar, and 32.5 portland cement is generally used for home decoration. In addition to jointing drywall, medium sand and medium coarse sand can be used.
The ratio of cement to sand in wall tiles and floor tiles is similar. Generally, the cement-sand ratio is 1: 3, and 32.5 cement is used. Cement wall tiles should be added with appropriate amount of 108 glue to enhance adhesion (30% glue +70% water), which can be adjusted as needed. But good cement doesn't need to be sticky. Cemented cement is easy to construct, but its quality may be hidden in the future.