Today, there are a wide variety of additives that can help make grout much better and stronger. The purchase of some of these additives is seriously expensive, and therefore many summer residents and owners are forced to turn to "folk" methods, which in practice are in no way inferior to store-bought products.
Good old PVA glue is a sensible alternative to store-bought cement mortar plasticizers. To improve the quality of the mixture, it was added to cement back in the days of the Soviet Union. The addition of "folk" plasticizer will significantly improve the quality of the solution. First of all, PVA increases the plasticity of cement, due to which it can withstand high compression and rupture loads, thereby reducing the likelihood of cracking.
As a result, PVA increases the service life of the concrete structure, improves adhesion (adhesion), increases the reliability of the structure, simplifies the work with cement, protects the surface from deformation when excessive load is applied, and increases the wear resistance of the mortar. You can add glue, including to the plaster solution. Such a mixture will adhere perfectly to a wide variety of surfaces, be it brick, concrete or something else.
Do not add too much glue to the cement mix. The total maximum indicator for the presence of glue in concrete cannot exceed 20% or a glue-cement ratio of 1: 5. However, such a high proportion is only suitable for a composition when working with tiles. For cementitious screeds, the glue content should be between 5% and 12%. The best solution would be to add 200 grams of PVA glue as a plasticizer per 10 liters of concrete mix. If a plaster composition is prepared on the basis of cement, then no more than 70 grams of glue is taken for 10 liters of the mixture.
If you want to know even more interesting things, then you should read about how to make paving slabs with your own hands with imitation of paving stones.