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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 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
C2 - used for interior and exterior work and meeting increased requirements
1 T – quick-hardening adhesive mixtures
0 F – mixtures with extended open time
0 C1 – used for interior and exterior work and meeting the minimum regulated 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 E – mixtures with increased resistance to slipping
0 S1 – highly elastic mixtures
0
Material on this issue is presented in the GOST R 56387 .
Question 2
What requirements must be met for adhesive mixtures in a dry state?
Your Answer Option Right? Result
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 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 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
Material on this issue is presented in the GOST R 56387 .
Question 3
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 TE S2, GOST R 56387
0 Dry construction adhesive mixture C1 FE S2, GOST R 56387
0 Dry construction adhesive mixture C2 TE S2, GOST R 56387
1 Dry construction adhesive mixture C2 TE S1, GOST R 56387
0 Dry construction adhesive mixture C2 FE S2, GOST R 56387
0 Dry construction adhesive mixture C1 TE S1, GOST R 56387
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 the hardened state are ...
Your Answer Option Right? Result
Wetting ability
0 Strength of adhesive bond (adhesion) after exposure to high temperatures
1 Strength of the adhesive bond (adhesion) after exposure to an air-dry environment
1 Transverse deformation
0 Strength of adhesive bond (adhesion) after cyclic freezing and thawing
1 Open time
1 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 5
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 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 The average density of adhesive mortar mixtures is set by the manufacturer at the request of the consumer
0
Material on this issue is presented in the GOST R 56387 .
