What requirements must be met for hardened solutions of adhesive mixtures?
The strength of the adhesive joint after exposure to an aqueous environment must be no less than:
The strength of the adhesive joint after exposure to an air-dry environment for 28 days must be no less than:
The open time to achieve an adhesive joint strength of at least 0.5 MPa should be for adhesives of the following class:
The transverse deformation of class S1 adhesives must be at least 2.5 mm, class S2 – at least 5 mm.
The strength of the adhesive connection to the base of fast-hardening class F adhesives after exposure in an air-dry environment for 6 hours should be no more than 0.5 MPa
The strength of the adhesive joint after exposure to high temperatures must be no less than:
The strength of the adhesive joint after cyclic freezing and thawing must be no less than:
Material on this issue is presented in the GOST R 56387 .
To mix (dilute, mix) cement adhesive mixtures of class C1, it is necessary to use...
Synthetic oil
Water-based latex mixture
Vegetable oil
Primer
PVA - emulsion of polyvinyl acetate in water, with a plasticizer and special additives
Adhesive milk
Water latex
Water
Material on this issue is presented in technical data sheets for cement adhesive mixtures.
What requirements must be met for adhesive mixtures in a dry state?
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 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 content of grains larger than 0.63 mm in the adhesive mixture should not exceed 0.50%
The largest grain size of the adhesive mixture should not exceed 0.63 mm.
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 ...
Wetting ability
Strength of adhesive bond (adhesion) after exposure to high temperatures
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
Open time
Transverse deformation
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 C1 TE S2, 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 C2 TE S1, GOST R 56387
Dry construction adhesive mixture C1 TE S1, GOST R 56387
Dry construction adhesive mixture C1 FE S2, GOST R 56387
