Meisterprüfung Maler und Anstreicher Practice Questions - Meisterprüfung Maler und Anstreicher (Austria) Exam - Meisterprüfung Maler und Anstreicher Practice Questions - Meisterprüfung Maler und Anstreicher (Austria) Exam

Question 1

According to Austrian plaster classification and DIN EN 998-1, which binder combination characterizes Mortar Group P II (lime-cement plaster / Kalkzementputz, Mortar class CS II)?

Hydraulic lime or aerial lime combined with Portland cement as co-binder, balanced with mineral aggregates. Pure aerial slaked lime (Luftkalk) with no cementitious additions, hardening exclusively through atmospheric carbonation. Pure Portland cement with sand aggregates, achieving high compressive strength class CS IV without lime. Anhydrite gypsum binder mixed with synthetic resin dispersion additives for interior moisture-proof drywall.

Correct Answer:

Hydraulic lime or aerial lime combined with Portland cement as co-binder, balanced with mineral aggregates.

Question 2

A newly poured concrete wall exhibits a glossy, brittle surface layer known as a sinter skin (Sinterschicht). Why is this layer detrimental to subsequent coatings, and how must it be removed?

The sinter skin consists of fine cement paste and release agents with low cohesive tensile strength and low porosity; it must be mechanically removed by diamond grinding or sweep blasting. The sinter skin contains acidic gypsum salts that react with dispersion binders; it must be neutralized by washing with concentrated hydrochloric acid. The sinter skin prevents the evaporation of core moisture; it must be sealed immediately with a vapor-tight 2K epoxy primer. The sinter skin increases surface porosity excessively; it must be consolidated by applying a high-solids penetrating primer.

Correct Answer:

The sinter skin consists of fine cement paste and release agents with low cohesive tensile strength and low porosity; it must be mechanically removed by diamond grinding or sweep blasting.

Question 3

When measuring the residual moisture (Restfeuchte) of a concrete floor slab using the Calcium Carbide Method (CM-Gerät) prior to installing a vapor-tight 2K epoxy floor coating, what is the maximum permissible moisture limit?

Maximum 2.0 CM-% (or 1.5 CM-% for heated screeds) Maximum 5.0 CM-% (or 4.5 CM-% for heated screeds) Maximum 8.5 CM-% (or 7.0 CM-% for heated screeds) Maximum 0.3 CM-% (or 0.1 CM-% for heated screeds)

Correct Answer:

Maximum 2.0 CM-% (or 1.5 CM-% for heated screeds)

Question 4

A master painter observes crystalline white efflorescence (Ausblühungen) on an exterior brick and mineral plaster facade. What is the correct diagnostic evaluation and remediation procedure?

The efflorescence consists of water-soluble mineral salts transported by moisture; the substrate must be dried, the moisture source eliminated, and salts removed dry by brushing without water. The efflorescence is living fungal mycelium; it must be washed immediately with hot water and biocidal chlorine bleach. The efflorescence consists of insoluble calcium silicates; it can be directly painted over with an acrylic dispersion paint. The efflorescence is caused by excess air entrainment; it must be dissolved and washed deep into the brickwork using high-pressure warm water.

Correct Answer:

The efflorescence consists of water-soluble mineral salts transported by moisture; the substrate must be dried, the moisture source eliminated, and salts removed dry by brushing without water.

Question 5

Freshly applied mineral lime-cement plaster exhibits a strongly alkaline pH of 12.0 to 13.0. What chemical failure occurs if a standard solvent-borne alkyd resin enamel is applied directly onto this fresh substrate?

Saponification (Verseifung): the alkaline calcium hydroxide hydrolyzes the ester bonds of the alkyd resin, resulting in a sticky, non-drying, and discolored film. Silicification (Verkieselung): the alkyd resin forms insoluble quartz crystals that embrittle the plaster. Carbonation arrest: the solvent inhibits CO2 absorption, permanently preventing the plaster from curing. Osmotic swelling: the solvent dissolves calcium carbonate into toxic hydrocarbon gases.

Correct Answer:

Saponification (Verseifung): the alkaline calcium hydroxide hydrolyzes the ester bonds of the alkyd resin, resulting in a sticky, non-drying, and discolored film.

Question 1

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Prepare with the Meisterprüfung Maler und Anstreicher Practice Questions - Meisterprüfung Maler und Anstreicher (Austria) Exam practice quiz. This question bank includes 100 questions covering paint, coating, exterior, component, and master. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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Meisterprüfung Maler und Anstreicher Practice Questions - Meisterprüfung Maler und Anstreicher (Austria) Exam

This practice set contains 100 questions from the matching question bank and focuses on paint, coating, exterior, component, and master. 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 Maler und Anstreicher Practice Questions - Meisterprüfung Maler und Anstreicher (Austria) Exam

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