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 ...
Strength of adhesive bond (adhesion) after cyclic freezing and thawing
Strength of the adhesive bond (adhesion) after exposure to an aqueous environment
Strength of the adhesive bond (adhesion) after exposure to an air-dry environment
Wetting ability
Strength of adhesive bond (adhesion) after exposure to high temperatures
Transverse deformation
Open time
Material on this issue is presented in the GOST R 56387 .
The symbol of adhesive mixtures must consist of the name of the mixture in accordance with GOST 31189, class designation, values of basic quality indicators (if necessary) and standard designation. Adhesive mixtures are divided into the following classes...
C2 - used for interior and exterior work and meeting increased requirements
C1 – used for interior and exterior work and meeting the minimum regulated requirements
E – mixtures with increased resistance to slipping
F – mixtures with extended open time
C0 – used for laying tiles with normal water absorption (at least 5% by weight) only for interior work
S1 – highly elastic mixtures
T – quick-hardening adhesive mixtures
S2− elastic adhesive mixtures
What requirements must be met for adhesive mortar mixtures (ready-to-use)?
The water-holding capacity of ready-to-use adhesive mortar mixtures must be at least 98%
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 water-holding capacity of adhesive mortar mixtures, ready for use, must be at least 85%
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 average density of adhesive mortar mixtures is set by the manufacturer at the request of the consumer
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 ready for use (freshly prepared) are ...
Humidity
Minimum Density
Average density
Water holding capacity
Resistance to slippage
Maximum Density
What requirements must be met for adhesive mixtures in a dry state?
The largest grain size of the adhesive mixture should not exceed 0.63 mm.
The bulk density of the adhesive mixture should not exceed 1600 kg/m3
The content of grains larger than 0.63 mm in the adhesive mixture should not exceed 0.50%
The amount of cement in the adhesive mixture must exceed 35% of the mass
The moisture content of adhesive mixtures should not exceed 0.30% by weight
The specific effective activity of natural radionuclides of adhesive mixtures should not exceed the limit values established by GOST 30108
