Byggnadsmaterial

Ämnesområden: Lim; Cement. Gips. Kalk. Bruk
Kommittébeteckning: SIS/TK 596 (Keramiska plattor)
Källa: CEN
Svarsdatum: den 1 okt 2020
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This document is applicable to the following three types of adhesives for ceramic tiles, i.e. cementitious ones for internal and external tile installations, dispersion and reaction resin ones for internal tile installations, on walls and floors. This document specifies the essential characteristics and the respective threshold levels of the adhesives for ceramic tiles. It also specifies the appurtenant test methods and the assessment and verification of constancy of performance (AVCP). NOTE This document does not provide criteria or recommendations for the design and installation of ceramic tiles.

Kommittébeteckning: SIS/TK 596 (Keramiska plattor)
Källa: CEN
Svarsdatum: den 1 okt 2020
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This document applies to all liquid-applied water impermeable products, based on polymer modified cementitious mortars, dispersions and reaction resin coatings, used beneath ceramic tiling, for external tile installations on walls and floors and in swimming pools. This document specifies the essential characteristics, the respective threshold levels and test methods for liquid-applied water impermeable products associated with tile adhesives. This document specifies the assessment and verification of constancy of performance, of liquid-applied water impermeable products beneath ceramic tiling. NOTE This document does not contain recommendations for the design and installation of ceramic tiles and grouts in combination with water impermeable products.

Kommittébeteckning: SIS/TK 193 (Takprodukter och taksäkerhet)
Källa: CEN
Svarsdatum: den 1 okt 2020
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This document specifies a test method for pull through and shear resistance of fibre-cement flat sheets for roofing and cladding.

The results are also applicable for:

— Coated or uncoated sheets manufactured at the same production facility as the tested sheets.

— The test method can be applied to textured or non-textured fibre-cement flat sheets. The results of non-textured sheets are only applicable for textured sheets if the nominal minimum thickness of the textured sheet is at least the nominal thickness of the non-textured sheet.

— The same type of fixing head or washer assembly where applicable if the diameter of the fixing head or washer is 0 mm to 2 mm larger than in the test.

— The Shore A hardness of the sealing washer, where applicable, is ± 5 that of the washer used in the test.

— The diameter of the drilled hole through the fibre cement sheet is 0 mm to 2 mm smaller than in the test, providing there is the required clearance hole around the shank of the fastener.

It applies only to products as delivered.

Kommittébeteckning: SIS/TK 193 (Takprodukter och taksäkerhet)
Källa: CEN
Svarsdatum: den 1 okt 2020
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This document specifies test methods for pull through resistance and shear resistance of fibre-cement profiled sheets for roofing and cladding. The results are only applicable to the fibre cement product and not to the complete fixing assembly.

It applies only to products as delivered.

The field of application for pull through resistance is defined in 7.6.

The field of application for shear resistance is defined in 8.6.

Kommittébeteckning: SIS/TK 187 (Ballast)
Källa: CEN
Svarsdatum: den 23 okt 2020
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This document specifies the reference methods used for type testing and in case of dispute, for the determination of particle density and water absorption of normal weight and lightweight aggregates. Other methods can be used for other purposes, such as factory production control, provided that an appropriate working relationship with the reference method has been established. For convenience, some of these other methods are also described in this document.

The reference methods for normal weight aggregates are:

— a wire basket method for aggregate particles retained on the 31,5 mm sieve (Clause 7, except for railway ballast which uses Annex B);

— a pyknometer method for aggregate particles passing the 31,5 mm test sieve and retained on the 4 mm test sieve (Clause 8);

— a pyknometer method for aggregate particles passing the 4 mm test sieve and retained on the 0,063 mm test sieve (Clause 9).

In Clauses 7, 8 and 9, three different particle density parameters (oven-dried particle density, saturated and surface-dried particle density and apparent particle density) and water absorption are determined after a soaking period of 24 h. In Annex B, the oven-dried particle density parameter is determined after soaking in water to constant mass.

For aggregate particles passing the 31,5 mm test sieve and retained on the 4 mm test sieve, the wire basket method in Clause 7 can be used as an alternative to the pyknometer method in Clause 8.

NOTE 1 The wire basket method can also be used for single aggregate particles retained on the 63 mm sieve.

NOTE 2 The pyknometer method described in Clause 8 can be used as an alternative for aggregates passing the 4 mm sieve and retained on the 2 mm sieve.

The reference methods for lightweight aggregates are:

— a pyknometer method for aggregate particles passing the 31,5 mm test sieve and retained on the 4 mm test sieve (Annex C). Three different particle density parameters (oven-dried particle density, saturated and surface-dried particle density and apparent particle density) and water absorption are determined after pre-drying and a soaking period of 24 h;

— a method for aggregate particles passing the 4 mm test sieve, mixed with water and filtered in a Büchner funnel (Annex D). The three particle densities and water absorption are determined using a vacuum in the range of 50 mbar to 100 mbar for at least five minutes.

Three other methods for normal weight aggregates can be used to determine the pre-dried particle density, as specified in normative Annexes A and H:

— a wire basket method for aggregate particles passing the 63 mm test sieve and retained on the 31,5 mm test sieve (A.3);

— a pyknometer method for aggregate particles passing the 31,5 mm test sieve and retained on the 0,063 mm test sieve (A.4);

— a pyknometer method for aggregate particles passing the 31,5 mm test sieve, including the 0/0,063 mm size fraction (Annex H).

NOTE 3 If water absorption is less than about 1,5 %, the apparent particle density can be assessed using the pre-dried particle density method as defined in Annex A

The quick method in normative Annex E can be used in factory production control to determine the apparent particle density of lightweight aggregates.

The method in informative Annex F can be used to determine the particle density and water absorption of aggregates particles passing the 4 mm test sieve.

Data on the density of water at various temperatures is specified in normative Annex G.

Guidance on the significance and use of the various density and water absorption parameters is given in informative Annex I.

Annex J (informative) contains precision data.

 

 

Kommittébeteckning: SIS/TK 187 (Ballast)
Källa: CEN
Svarsdatum: den 6 nov 2020
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This document specifies a basic procedure for the identification of the petrographic type of natural aggregates. Precise petrographic identification, of technical mineralogy and petrography for civil engineering or specific end uses, requires further examination and is therefore excluded from the scope of this document. NOTE 1 A qualified geologist (petrographer), with experience of materials used in civil engineering and aware of the composition of the deposit, has sufficient skills to sample and name the rock. NOTE 2 For precise petrographic identification, a non-exhaustive list of reference literature is given in the Bibliography. This document covers only natural aggregates. It is used to describe massive rocks and unconsolidated rocks. Annex A provides guidance on the petrographic nomenclature by giving definitions of simple petrographic terms applicable to rock types used for aggregates.

Kommittébeteckning: SIS/TK 187 (Ballast)
Källa: CEN
Svarsdatum: den 6 nov 2020
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This document specifies the reference method used for type testing and in cases of dispute, for the determination of the methylene blue value of the 0/2 mm fraction in fine aggregates or all-in aggregates (MB). It also specifies the reference method for the determination of the methylene blue value of the 0/0,125 mm fraction (MBF) in Annex A. Other methods can be used for other purposes, such as factory production control, provided that an appropriate working relationship with the suitable reference method has been established. A conformity check, adding a single quantity of dye solution equivalent to a specified limiting value and which can be used as part of a production control process, is described in informative Annex B. Annex C specifies the preparation of 10 g/l methylene blue solution and Annex D specifies the procedure for the determination of the methylene blue value of kaolinite (MBk). Annexes C and D are normative. An example of a test data sheet is given in informative Annex E. WARNING - The use of this part of EN 933 can involve hazardous materials, operations and equipment (such as dust, noise and heavy lifts). It does not purport to address all of the safety or environmental problems associated with its use. It is the responsibility of users of this document to take appropriate measures to ensure the safety and health of personnel and the environment prior to application of the standard, and fulfil statutory and regulatory requirements for this purpose.

Ämnesområden: Byggnadsmaterial: allmänt
Kommittébeteckning: SIS/TK 189 (Innemiljö och energianvändning i byggnader)
Källa: ISO
Svarsdatum: den 18 nov 2020
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This International Standard specifies a test method for determining moisture adsorption/desorption properties

of building materials in response to humidity variation. This International Standard also defines the

adsorption/desorption efficiency of building materials, measured as the change in mass of a specimen moved

from a given space to another one of different relative humidity and equal temperature.

Moisture adsorption/desorption properties of materials are measured under conditions of a single cycle and

several cycles.