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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
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 Adhesion is the ability of a layer of mortar mixture treated with a notched trowel to wet the facing tile.
0 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 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 Pot life is the period of time after mixing the mortar mixture necessary to achieve readiness for installation.
0 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
What requirements must be met for adhesive mortar mixtures (ready-to-use)?
Your Answer Option Right? Result
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.
0 The average density of adhesive mortar mixtures must exceed 1800 kg/m3
0 The water-holding capacity of ready-to-use adhesive mortar mixtures must be at least 98%
1 The average density of adhesive mortar mixtures is set by the manufacturer at the request of the consumer
0 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.
1 The water-holding capacity of adhesive mortar mixtures, ready for use, must be at least 85%
0
Material on this issue is presented in the GOST R 56387 .
Question 3
What requirements must be met for hardened solutions of adhesive mixtures?
Your Answer Option Right? Result
The transverse deformation of class S1 adhesives must be at least 2.5 mm, class S2 – at least 5 mm.
1 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 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 air-dry environment for 28 days must be no less than:
0.5 MPa for C0;
1 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 exposure to an aqueous environment must be no less than:
0.5 MPa for C1;
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 in the hardened state are ...
Your Answer Option Right? Result
Strength of adhesive bond (adhesion) after cyclic freezing and thawing
1 Wetting ability
0 Transverse deformation
0 Strength of the adhesive bond (adhesion) after exposure to an air-dry environment
1 Open time
1 Strength of the adhesive bond (adhesion) after exposure to an aqueous environment
1 Strength of adhesive bond (adhesion) after exposure to high temperatures
1
Material on this issue is presented in the GOST R 56387 .
Question 5
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 ...
Your Answer Option Right? Result
Humidity
1 Largest aggregate grain size
1 Content of grains of the largest coarseness
1 Color
0 Low dust generation
0 Bulk density
0
Material on this issue is presented in the GOST R 56387 .
