Masonry mortars are used to connect elements (bricks, hollow bricks, blocks), which the wall is made of, into a durable structure capable of carrying loads.

Division by …

The division of building stones due to the shape and type of processing.

• Field stone (erratic) – Harvested from the fields, in the form of rock fragments of dimensions 10 …

Plaster (hydrated calcium sulfate) it's an air binder, obtained by roasting gypsum stone in calciners and grinding it. Due to the quick setting time of the gypsum grout, …

For what reason additives are used in the production of coating materials?
Additives to coating materials are used to improve certain properties of these materials, constraints, imparting specific chemical properties or …

Combined types of covers are most effective: insulated blinds and shutters, as well as roller blinds, blinds and shutters.
Other studies show, that with windows with high insulation, the effectiveness of temporary curtains decreases significantly …

What pigments are not suitable for silicate paints and why?
The following pigments are not suitable for silicate paints: chrome yellow, chrome green, zinc yellow, zinc green, cynober, manganese violet, błękit …

What are siccatives?
Siccatives are substances that accelerate drying. They are added during production to oil paints, varnishes and paints based on alkyd resins to accelerate curing by …

How can lithopone be distinguished from other white pigments?
If lithopone is poured with dilute hydrochloric acid, hydrogen sulfide will be formed.

How can you distinguish heavy spar and barite white from other white pigments?
Spa …

Please characterize the differences between dye and chemical stains.
Dyeing stains give the wood a natural color, simply soaking into its structure. Chemical stains, on the other hand, cause color changes as a result of the reaction …