Dry mixtures are high -quality modern building materials that differ in multicomponent composition, which, in addition to mineral binders and fillers, includes various chemical modifiers. Chemical additives increase the quality characteristics of the building material, allow you to adjust the speed of setting the astringent and give the composition the required mechanical and physical properties after hardening. Modifiers for their purpose are:
· Plasticizing additives;
· Substances slowing or accelerating hardening;
· Sealing supplements;
· Hydrophobizators;
· Gas -forming additives;
· Substances that increase adhesion, bending strength and compression;
· Elasticifiers;
· Antomorous additives (antifreeze). The simplest material, which can be attributed to the category of dry building mixtures, is cement with sand used for masonry and plastering work. Sometimes lime, ash and ground limestone are added to this composition.
For their purpose, dry mixtures are divided into categories:
· Plaster, panting and repair compositions on cement binder;
· Putty and plaster on gypsum knitting;
· Decorative plaster;
· Compounds with perlite for cellular concrete;
· Tile and stone adhesives;
· Mixtures for gluing and protecting the insulation (mineral wool and polystyrene foam);
· Compounds for creating screeds and self -leveling floors;
· Waterproofing mixtures.
Dry mixtures can be used for internal and/or external works. To use them, it is enough to shut up with clean water in the necessary proportions. To perform work in the winter (minus temperatures), there are compositions with special anti -gun additives. A big plus of these building materials is ease of use.
The advantages of dry mixtures are the construction materials data have a number of advantages and advantages:
· Time saving. To get started, you just need to add water to the mixture and mix;
· Environmental safety;
· Savings of labor costs. Using modified mixtures with specified characteristics of the work are performed faster;
· Universality;
· Convenience in work;
· Large strength and stability of structures to various influences;
· Builders are difficult to cheat, since dry mixtures have a clearly balanced composition and are supplied in bags.
For example, with independent mixing, many workers in a cement-sand mortar add less cement and more sand than required by norms.
You can buy dry mixtures in different construction stores, as they are widely used in all types of construction and final plan. There are a lot of domestic manufacturers and importers of construction materials on the market, since the demand for them is very high. The competition is very large, and therefore, production plants are working on improving product quality and expanding the assortment. This is positively reflected in the qualitative characteristics of the product and the possibilities of choosing. Now, if desired, you can find mixtures for almost any needs and needs of modern construction.
Of course, the characteristics and properties of the final design or finishing depend on the quality of the astringent and modifiers, as well as the correct selection and use of the mixture. She must satisfy all the requirements of the planned work as much as possible. This means that before purchasing a product such as a dry mixture, you need to carefully familiarize yourself with its indicators and characteristics (written on the packaging), as well as check certification.
