Meisterprüfung Platten- und Fliesenleger Practice Questions - Meisterprüfung Platten- und Fliesenleger (Austria) Exam - Meisterprüfung Platten- und Fliesenleger Practice Questions - Meisterprüfung Platten- und Fliesenleger (Austria) Exam

Question 1

What is the primary chemical and physical distinction between a Calcium Sulfate screed (Calciumsulfatestrich CA/CAF) and a Cement screed (Zementestrich CT) regarding its behavior when exposed to moisture?

Calcium sulfate screeds lose significant mechanical strength and become water-soluble when wet, and they react with cementitious adhesives to form expansive ettringite if not isolated by a barrier primer. Calcium sulfate screeds exhibit higher alkalinity (pH > 12) than cement screeds and undergo hydraulic curing that increases strength when continuously submerged in water. Calcium sulfate screeds exhibit significantly higher thermal expansion coefficients than cement screeds and do not require movement joints even on heated floor assemblies. Calcium sulfate screeds cure exclusively through carbonation from atmospheric carbon dioxide, making them completely impervious to water vapor and moisture damage.

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Question 2

When conducting a CM moisture test (Calcium-Carbid-Verfahren) on a cement screed (Zementestrich CT) to determine readiness for tiling (Belegreife), what is the correct test procedure?

Take a 50 g sample from the lower half to lower third of the screed cross-section, crush it in the CM cylinder with 4 steel balls, add the calcium carbide ampoule, seal the vessel, shake vigorously for 2 minutes, and read the manometer after 10–15 minutes. Take a 10 g sample exclusively from the top 5 mm surface skin, crush it with an electronic blender, add water, and read the manometer immediately after 30 seconds. Take a 100 g sample from the perimeter insulation strip, shake for 30 minutes without steel balls, and record the highest momentary peak pressure. Take an uncrushed core drill sample of 200 g, insert it directly into the CM bottle with dry ice, and measure the temperature drop after 60 minutes.

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Question 3

According to ÖNORM B 3407, what are the maximum permissible residual moisture limits (Restfeuchte) determined by CM-Messung for unheated Cement screed (CT) and unheated Calcium sulfate screed (CA) before installing ceramic tiles?

Unheated Cement screed (CT) ≤ 2.0 CM-%; Unheated Calcium sulfate screed (CA) ≤ 0.5 CM-% Unheated Cement screed (CT) ≤ 3.5 CM-%; Unheated Calcium sulfate screed (CA) ≤ 1.5 CM-% Unheated Cement screed (CT) ≤ 0.5 CM-%; Unheated Calcium sulfate screed (CA) ≤ 2.0 CM-% Unheated Cement screed (CT) ≤ 1.0 CM-%; Unheated Calcium sulfate screed (CA) ≤ 1.0 CM-%

Correct Answer:

Unheated Cement screed (CT) ≤ 2.0 CM-%; Unheated Calcium sulfate screed (CA) ≤ 0.5 CM-%

Question 4

When installing ceramic floor tiles on heated screeds (beheizte Estriche mit Fußbodenheizung), what are the maximum permissible CM residual moisture values required by ÖNORM B 3407?

Heated Cement screed (CT) ≤ 1.8 CM-%; Heated Calcium sulfate screed (CAF) ≤ 0.3 CM-% Heated Cement screed (CT) ≤ 2.5 CM-%; Heated Calcium sulfate screed (CAF) ≤ 1.0 CM-% Heated Cement screed (CT) ≤ 0.3 CM-%; Heated Calcium sulfate screed (CAF) ≤ 1.8 CM-% Heated Cement screed (CT) ≤ 2.0 CM-%; Heated Calcium sulfate screed (CAF) ≤ 0.5 CM-%

Correct Answer:

Heated Cement screed (CT) ≤ 1.8 CM-%; Heated Calcium sulfate screed (CAF) ≤ 0.3 CM-%

Question 5

What is the standard minimum curing age of a conventional Portland cement screed (CT-C25-F4) before functional heating (Funktionsheizen) can be initiated?

At least 21 days after screed installation At least 3 days after screed installation At least 7 days after screed installation At least 60 days after screed installation

Correct Answer:

At least 21 days after screed installation

Question 1

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Prepare with the Meisterprüfung Platten- und Fliesenleger Practice Questions - Meisterprüfung Platten- und Fliesenleger (Austria) Exam practice quiz. This question bank includes 100 questions covering screed, norm, class, tiles, and waterproofing. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Meisterprüfung Platten- und Fliesenleger Practice Questions - Meisterprüfung Platten- und Fliesenleger (Austria) Exam

This practice set contains 100 questions from the matching question bank and focuses on screed, norm, class, tiles, and waterproofing. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

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Meisterprüfung Platten- und Fliesenleger Practice Questions - Meisterprüfung Platten- und Fliesenleger (Austria) Exam

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