Bygningsmaterialer

Komité: SN/K 7 (Referansegruppen for betongområdet)
Opprinnelse: SN
Sluttdato: 13. des 2021
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Dette dokumentet omhandler krav og retningslinjer for planlegging, demontering, bearbeiding, prøving, vurdering og dokumentering av brukte hulldekker (hollow core slab) til ombruk. Dette dokumentet beskriver metode for dokumentering av egenskaper på et nivå som tilsvarer grunnlaget for utstedelse av ytelseserklæring/CE-merke etter NS-EN 1168:2005+A3:2011.
Komité: SN/K 343 (Naturstein og natursteinsprodukter)
Opprinnelse: SN
Sluttdato: 16. des 2021
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This document specifies a laboratory method for determining the resistance to thermal and moisture cycling of marble intended for the external cladding of building facades. For scientific definition of marble, reference is made to EN 12670 Terminology: 2.1.243 a. NOTE Bowing and rapid strength loss is known to occur in some marbles when used as exterior cladding.
Komité: SN/K 7 (Referansegruppen for betongområdet)
Opprinnelse: SN
Sluttdato: 16. des 2021
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This document describes a method for determining the electrical resistivity of concrete in water saturated conditions. Two methods of measuring the resistivity are standardized: the volumetric method (see 3.1.3), which is the reference method, and the surface method (see 3.1.4). NOTE The volumetric method is applicable to cast specimens or cores, while the surface method is suitable for use on cast specimens, cores and on construction site, but not all these applications are covered in this document. The method can be applied to the normal range of concretes covered by current standards. It does not cover the concretes made with porous aggregates or having metallic components. The use of resistivity to assess the potential for corrosion of reinforcement in existing structures is not specified in this document. The use of resistivity to assess cores taken from an existing structure, which need pre-condition on water saturation, is not directly specified in this document.

Komité: SN/K 9 (Precast concrete products CEN/TC 229)
Opprinnelse: SN
Sluttdato: 23. des 2021
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This document complements the core rules for the product category of construction products as defined in EN 15804:2012+A2:2019 and is intended to be used as a c-PCR in conjunction with that standard. This document applies to concrete and concrete elements for building and civil engineering, excluded autoclaved aerated concrete. This document defines the parameters to be reported, what EPD types (and life cycle stages) to be covered, what rules to be followed in order to generate Life Cycle Inventories (LCI) and conduct Life Cycle Impact Assessment (LCIA) and the data quality to be used in the development of EPDs. In addition to the common parts of EN 15804:2012+A2:2019, this document for concrete and concrete elements: - defines the system boundaries; - defines the modelling and assessment of material-specific characteristics; - defines allocation procedures for multi-output processes along the production chain; - defines allocation procedures for reuse and recycling; - includes the rules for calculating the LCI and the LCIA underlying the EPD; - provides guidance/specific rules for the determination of the reference service life (RSL); - gives guidance on the establishment of default scenarios; - gives guidance on default functional units for concrete elements. This document is intended to be used either for cradle to gate with options or cradle to grave assessment, provided the intentions are properly stated in the system boundary description. Within the construction works context, a cradle to grave declaration delivers a more comprehensive understanding of the environmental impact associated with concrete and concrete elements.
Komité: ISO/TC 163/SC 3 (Thermal insulation products)
Opprinnelse: ISO
Sluttdato: 30. des 2021
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Komité: SN/K 30 (Bygningers varmeisolering)
Opprinnelse: SN
Sluttdato: 6. jan 2022
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This European Standard specifies equipment and procedures for determining the tensile strength and elongation of rectangular and triaxial glass fibre meshes which are used for the reinforcement of the base coat in External Thermal Insulation Composite Systems (ETICS).
Komité: ISO/TC 163/SC 3 (Thermal insulation products)
Opprinnelse: ISO
Sluttdato: 2. feb 2022
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