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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.
You scored 4 out of 5 possible points.
Your result: 80%
Question 1
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.
Your Answer Option Right? Result
Dry construction adhesive mixture C1 FE S2, GOST R 56387
0 Dry construction adhesive mixture C2 TE S1, GOST R 56387
0 Dry construction adhesive mixture C1 TE S2, GOST R 56387
0 Dry construction adhesive mixture C2 TE S2, GOST R 56387
1 Dry construction adhesive mixture C1 TE S1, GOST R 56387
0 Dry construction adhesive mixture C2 FE S2, GOST R 56387
0
Material on this issue is presented in the GOST R 56387 .
Question 2
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 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 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 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
Material on this issue is set out in the GOST R 56387 .
Question 3
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
Water holding capacity
1 Minimum Density
0 Resistance to slippage
1 Average density
0 Maximum Density
0 Humidity
0 Open time
-1
Material on this issue is presented in the GOST R 56387 .
Question 4
What requirements must be met for adhesive mixtures in a dry state?
Your Answer Option Right? Result
The specific effective activity of natural radionuclides of adhesive mixtures should not exceed the limit values established by GOST 30108
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 The moisture content of adhesive mixtures should not exceed 0.30% by weight
1 The content of grains larger than 0.63 mm in the adhesive mixture should not exceed 0.50%
1
Material on this issue is presented in the GOST R 56387 .
Question 5
The symbol of adhesive mixtures must consist of the name of the mixture in accordance with GOST 31189, class designation, values of basic quality indicators (if necessary) and standard designation. Adhesive mixtures are divided into the following classes...
Your Answer Option Right? Result
F – mixtures with extended open time
0 S1 – highly elastic mixtures
0 C2 - used for interior and exterior work and meeting increased requirements
1 C0 – used for laying tiles with normal water absorption (at least 5% by weight) only for interior work
1 S2− elastic adhesive mixtures
0 C1 – used for interior and exterior work and meeting the minimum regulated requirements
1 E – mixtures with increased resistance to slipping
0 T – quick-hardening adhesive mixtures
0
Material on this issue is presented in the GOST R 56387 .
