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The result obtained indicates excellent knowledge of the technical characteristics of ceramic tiles. But still read articles on incorrectly answered questions.
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Your result: 80%
Question 1
To mix (dilute, mix) cement adhesive mixtures of class C1, it is necessary to use...
Your Answer Option Right? Result
Synthetic oil
0 Primer
0 Vegetable oil
0 PVA - emulsion of polyvinyl acetate in water, with a plasticizer and special additives
0 Water-based latex mixture
1 Water latex
1 Water
1 Adhesive milk
0
Material on this issue is presented in technical data sheets for cement adhesive mixtures.
Question 2
The terms with their corresponding definitions are listed below. Indicate those for which the match is correct.
Your Answer Option Right? Result
Adhesion is the ability of a layer of mortar mixture treated with a notched trowel to wet the facing tile.
0 Pot life is the period of time after mixing the mortar mixture necessary to achieve readiness for installation.
0 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.
1 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.
1 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.
0 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.
1
Material on this issue is set out in the GOST R 56387 .
Question 3
What requirements must be met for adhesive mixtures in a dry state?
Your Answer Option Right? Result
The content of grains larger than 0.63 mm in the adhesive mixture should not exceed 0.50%
1 The specific effective activity of natural radionuclides of adhesive mixtures should not exceed the limit values established by GOST 30108
1 The moisture content of adhesive mixtures should not exceed 0.30% by weight
1 The largest grain size of the adhesive mixture should not exceed 0.63 mm.
1 The bulk density of the adhesive mixture should not exceed 1600 kg/m3
0 The amount of cement in the adhesive mixture must exceed 35% of the mass
0
Material on this issue is presented in the GOST R 56387 .
Question 4
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 ...
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Humidity
1 Low dust generation
0 Bulk density
0 Largest aggregate grain size
1 Color
0 Content of grains of the largest coarseness
1
Material on this issue is presented in the GOST R 56387 .
Question 5
What requirements must be met for hardened solutions of adhesive mixtures?
Your Answer Option Right? Result
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
0 The strength of the adhesive joint after cyclic freezing and thawing must be no less than:
0.5 MPa for C1;
1.0 MPa for C2.
1 The transverse deformation of class S1 adhesives must be at least 2.5 mm, class S2 – at least 5 mm.
-1 The open time to achieve an adhesive joint strength of at least 0.5 MPa should be for adhesives of the following class:
C0 and F – when gluing tiles after 10 minutes;
C1 and C2 – when gluing tiles after 20 minutes;
E – when gluing tiles after 30 minutes.
1 The strength of the adhesive joint after exposure to an air-dry environment for 28 days must be no less than:
0.5 MPa for C0;
0.5 MPa for C1;
1.0 MPa for C2.
1 The strength of the adhesive joint after exposure to high temperatures must be no less than:
0.5 MPa for C1;
1.0 MPa for C2.
1 The strength of the adhesive joint after exposure to an aqueous environment must be no less than:
0.5 MPa for C1;
1.0 MPa for C2.
1
Material on this issue is presented in the GOST R 56387 .
