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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
The terms with their corresponding definitions are listed below. Indicate those for which the match is correct.
Your Answer Option Right? Result
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 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
Material on this issue is set out in the GOST R 56387 .
Question 2
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 ...
Your Answer Option Right? Result
Strength of adhesive bond (adhesion) after cyclic freezing and thawing
1 Wetting ability
0 Open time
1 Strength of the adhesive bond (adhesion) after exposure to an air-dry environment
1 Strength of adhesive bond (adhesion) after exposure to high temperatures
1 Transverse deformation
0 Strength of the adhesive bond (adhesion) after exposure to an aqueous environment
1
Material on this issue is presented 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 amount of cement in the adhesive mixture must exceed 35% of the mass
0 The specific effective activity of natural radionuclides of adhesive mixtures should not exceed the limit values established by GOST 30108
1 The content of grains larger than 0.63 mm in the adhesive mixture should not exceed 0.50%
1 The bulk density of the adhesive mixture should not exceed 1600 kg/m3
0 The largest grain size of the adhesive mixture should not exceed 0.63 mm.
1 The moisture content of adhesive mixtures should not exceed 0.30% by weight
1
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 ready for use (freshly prepared) are ...
Your Answer Option Right? Result
Humidity
0 Average density
0 Minimum Density
0 Open time
0 Water holding capacity
1 Resistance to slippage
1 Maximum Density
0
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 exposure to high temperatures must be no less than:
0.5 MPa for C1;
1 The strength of the adhesive joint after cyclic freezing and thawing must be no less than:
0.5 MPa for C1;
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;
1 The strength of the adhesive joint after exposure to an aqueous environment must be no less than:
0.5 MPa for C1;
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;
1
Material on this issue is presented in the GOST R 56387 .
