Bygningsmaterialer

Komité: ISO/TC 189 (Ceramic tile)
Opprinnelse:
Sluttdato: 1. nov 2020
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Komité: CEN/TC 67 (Ceramic tiles)
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Sluttdato: 2. nov 2020
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Komité: CEN/TC 229 (Precast concrete products)
Opprinnelse:
Sluttdato: 5. nov 2020
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This document identifies the requirements, the basic performance criteria and evaluation of conformity for precast ribbed elements made of reinforced or prestressed normal weight or light weight concrete, used in floors or roofs. The elements consist of a top and/or bottom slab and one or more (usually two) ribs; transverse ribs may also be present. The concrete does not contain more than 1 % of homogeneously distributed organic material, by mass or by volume (whichever is the most onerous). Some examples of precast elements considered in this document are shown in Annex A. Specific requirements for minor floor elements are listed in Annex B. This document covers terminology, performance criteria, tolerances, relevant physical properties, test methods and aspects of transport and erection. This document does not cover load-bearing capacity determined by testing.
Komité: CEN/TC 229 (Precast concrete products)
Opprinnelse:
Sluttdato: 5. nov 2020
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This document identifies the essential characteristics of ribbed floor elements. These elements are precast elements made of reinforced or prestressed normal weight or light weight concrete, used in floors or roofs. They consist of a top and/or bottom slab and one or more (usually two) ribs; transverse ribs may also be present. The concrete does not contain more than 1 % of homogeneously distributed organic material, by mass or by volume (whichever is the most onerous). When used in roofs, these elements are used in the same way as for a floor, the difference being in the type of covering and the loads they support. This document specifies procedures for assessment and verification of constancy (AVCP) of performance of characteristics of the ribbed floor elements as well as marking and labelling of these elements. NOTE This document does not cover load-bearing capacity determined by testing.
Komité: CEN/TC 154 (Aggregates)
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Sluttdato: 5. 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.
Komité: CEN/TC 154 (Aggregates)
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Sluttdato: 5. 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.
Komité: ISO/TC 163/SC 1 (Test and measurement methods)
Opprinnelse:
Sluttdato: 12. nov 2020
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Komité: ISO/TC 163/SC 1 (Test and measurement methods)
Opprinnelse:
Sluttdato: 16. des 2020
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Komité: CEN/TC 89 (Thermal performance of buildings and building components)
Opprinnelse:
Sluttdato: 17. des 2020
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