The passing level of the test has been passed. Congratulations.
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
What requirements must be met for adhesive mortar mixtures (ready-to-use)?
Your Answer Option Right? Result
The average density of adhesive mortar mixtures is set by the manufacturer at the request of the consumer
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, the offset value should be no more than 1.5 mm.
-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
Material on this issue is presented in the GOST R 56387 .
Question 2
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
S2− elastic adhesive mixtures
0 E – mixtures with increased resistance to slipping
0 C1 – used for interior and exterior work and meeting the minimum regulated requirements
1 S1 – highly elastic mixtures
0 C2 - used for interior and exterior work and meeting increased requirements
1 F – mixtures with extended open time
0 C0 – used for laying tiles with normal water absorption (at least 5% by weight) only for interior work
1 T – quick-hardening adhesive mixtures
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 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 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 high temperatures 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
Wetting ability
0 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 Open time
1 Transverse deformation
0 Strength of adhesive bond (adhesion) after cyclic freezing and thawing
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
To mix (dilute, mix) cement adhesive mixtures of class C1, it is necessary to use...
Your Answer Option Right? Result
Water-based latex mixture
1 Water
1 Primer
0 PVA - emulsion of polyvinyl acetate in water, with a plasticizer and special additives
0 Synthetic oil
0 Vegetable oil
0 Water latex
1 Adhesive milk
0
Material on this issue is presented in technical data sheets for cement adhesive mixtures.
