Correct proportion of cement and sand in home decoration construction;

Generally speaking, the mixing ratio of cement and sand is 1: 3, that is, cement mortar consists of 1 cement and 3 sand, but this actually ignores the composition of water, and the ratio is generally around 0.6, that is, water, cement and sand should be 0.6: 1: 3.

In addition, for cement slurry, the use characteristics should be considered when mixing, and the proportion of different uses is also different. For example, the proportion of wall building and plastering is different, and the proportion should be analyzed according to the specific situation.

Extended data:

Introduce different proportions of building cement mortar;

1, plastering mortar is generally divided into ordinary plastering mortar (cement mortar, mixed mortar, etc. ) and special plastering mortar (waterproof mortar, decorative mortar, polymer mortar, etc. ). Generally, the strength grade of plastering mortar is not directly required, and the expression of "1: m" or "1: n: m" is generally adopted in the design documents, and the proportion of copies, that is, the volume ratio, is adopted.

Of course, it generally refers to the amount of cement or other binders, and m is the amount of sand, which is generally expressed in the form of "cement: other binders or additives: sand". Its proportioning form can also be in the form of x:y:z, all of which are part ratios, that is, volume ratios.

2. The mixing ratio of masonry sand is by weight. Because the design document does not say 1: N mortar is used for wall building, but M** mortar is used instead of 1: N mortar for plastering. So I think the mixture ratio of masonry mortar is calculated by weight.