The terms with their corresponding definitions are listed below. Indicate those for which the match is correct.
Adhesion is the ability of a layer of mortar mixture treated with a notched trowel to wet the facing tile.
Sliding is the displacement under the influence of gravity of tiles or slabs laid on a layer of mortar mixture treated with a notched trowel applied to a vertical or inclined surface.
Open time - the maximum period of time after applying a layer of mortar mixture of a given adhesion strength to the base on the base, during which it is allowed to lay facing tiles on the applied mortar mixture.
Holding time after preparation is the maximum period of time during which a freshly prepared mortar mixture (after additional mixing without adding water) retains its technological properties.
A notched trowel is a toothed tool that allows you to create a layer of mortar mixture on the base in the form of grooves of the same thickness.
Pot life is the period of time after mixing the mortar mixture necessary to achieve readiness for installation.
Material on this issue is set out in the GOST R 56387 .
Adhesive mixtures must comply with the requirements of the GOST R 56387 standard and be manufactured according to technological documentation approved by the manufacturer. The main indicators of the quality of adhesive mixtures in the hardened state are ...
Transverse deformation
Strength of adhesive bond (adhesion) after cyclic freezing and thawing
Strength of adhesive bond (adhesion) after exposure to high temperatures
Open time
Strength of the adhesive bond (adhesion) after exposure to an air-dry environment
Wetting ability
Strength of the adhesive bond (adhesion) after exposure to an aqueous environment
Material on this issue is presented in the GOST R 56387 .
An example of a symbol for an adhesive mixture based on a cement binder, intended for interior and exterior work, meeting increased requirements, with increased resistance to slipping, increased open time and high elasticity.
Dry construction adhesive mixture C2 TE S1, GOST R 56387
Dry construction adhesive mixture C1 TE S1, GOST R 56387
Dry construction adhesive mixture C2 TE S2, GOST R 56387
Dry construction adhesive mixture C2 FE S2, GOST R 56387
Dry construction adhesive mixture C1 FE S2, GOST R 56387
Dry construction adhesive mixture C1 TE S2, GOST R 56387
Adhesive mixtures must comply with the requirements of the GOST R 56387 standard and be manufactured according to technological documentation approved by the manufacturer. The main indicators of the quality of adhesive mixtures in a dry state are ...
Content of grains of the largest coarseness
Color
Low dust generation
Largest aggregate grain size
Bulk density
Humidity
What requirements must be met for adhesive mortar mixtures (ready-to-use)?
Resistance to slipping of adhesive mixtures is characterized by the value of displacement under the influence of gravity of facing tiles laid on a vertical or inclined surface. For adhesive mixtures, the offset value should be no more than 1.5 mm.
The average density of adhesive mortar mixtures must exceed 1800 kg/m3
The average density of adhesive mortar mixtures is set by the manufacturer at the request of the consumer
Resistance to slipping of adhesive mixtures is characterized by the value of displacement under the influence of gravity of facing tiles laid on a vertical or inclined surface. For adhesive mixtures of class T, the displacement value should be no more than 0.5 mm, for mixtures of other classes - no more than 0.7 mm.
The water-holding capacity of ready-to-use adhesive mortar mixtures must be at least 98%
The water-holding capacity of adhesive mortar mixtures, ready for use, must be at least 85%
