To mix (dilute, mix) cement adhesive mixtures of class C1, it is necessary to use...
PVA - emulsion of polyvinyl acetate in water, with a plasticizer and special additives
Water
Adhesive milk
Water latex
Primer
Synthetic oil
Vegetable oil
Water-based latex mixture
Material on this issue is presented in technical data sheets for cement adhesive mixtures.
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 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%
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, the offset value should be no more than 1.5 mm.
The average density of adhesive mortar mixtures must exceed 1800 kg/m3
Material on this issue is presented in the GOST R 56387 .
The terms with their corresponding definitions are listed below. Indicate those for which the match is correct.
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.
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.
Adhesion is the ability of a layer of mortar mixture treated with a notched trowel to wet the facing tile.
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.
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 the adhesive bond (adhesion) after exposure to an air-dry environment
Open time
Strength of the adhesive bond (adhesion) after exposure to an aqueous environment
Strength of adhesive bond (adhesion) after cyclic freezing and thawing
Wetting ability
Strength of adhesive bond (adhesion) after exposure to high temperatures
What requirements must be met for adhesive mixtures in a dry state?
The content of grains larger than 0.63 mm in the adhesive mixture should not exceed 0.50%
The bulk density of the adhesive mixture should not exceed 1600 kg/m3
The amount of cement in the adhesive mixture must exceed 35% of the mass
The specific effective activity of natural radionuclides of adhesive mixtures should not exceed the limit values established by GOST 30108
The moisture content of adhesive mixtures should not exceed 0.30% by weight
The largest grain size of the adhesive mixture should not exceed 0.63 mm.
