Anleggsvirksomhet

Komité: CEN/TC 154 (Aggregates)
Opprinnelse:
Sluttdato: 5. aug 2021
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This document provides non-contradictory complementary information that can be of use when producing or purchasing railway ballast according to the harmonized standard prEN 13450 1:2021. NOTE prEN 13450 1:2021 is also required to be read in conjunction with the Construction Products Regulation. Reused railway ballast is not covered by this document.
Komité: CEN/TC 154 (Aggregates)
Opprinnelse:
Sluttdato: 5. aug 2021
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This document specifies the characteristics of aggregates for use in the construction of the upper layer (superstructure) of railway track. With regard to the material source and production process, this document covers natural aggregate (see 3.1.3), manufactured aggregate (see 3.1.4), recycled aggregates (see 3.1.5), and mixtures of these materials. Aggregates covered in this document are railway ballast (see 3.1.2). Railway ballast refers to aggregates where 100 % of the surface of the particles can be described as totally crushed (see 3.1.2) and that are obtained by processing natural, manufactured materials or recycled crushed unbound aggregates. Aggregates covered in this document are coarse aggregates (see 3.1.10). Railway ballast resulting of previously used railway ballast on site and without putting it on the market (reused railway ballast) is not covered by this document. This document does not cover: — natural and manufactured aggregates, having oven-dried particle density l
Emner: Veibelegg
Komité: CEN/TC 227 (Road materials)
Opprinnelse:
Sluttdato: 19. aug 2021
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This document specifies a test method to determine the resistance of a bituminous mixture or pavement to fuels. The procedure involves initial soaking of a test specimen made in the laboratory or cored from a pavement in a fuel, followed by a brushing period with a brush test device. The material loss of the specimen is a measure of the resistance to that fuel for that bituminous mixture.
Komité: CEN/TC 256 (Railway applications)
Opprinnelse:
Sluttdato: 19. aug 2021
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This European Standard is applicable to Resilient Element for Floating Slab system (REFS) – Elements used in floating slab and defines the test procedures and their acceptance criteria. The standard covers not only those parameters related to the effectiveness of a track structure in mitigating vibrations, that is, to reduce the emission of vibrations and structure-borne noise, but also the parameters that are needed for the static analysis and for the verification of track safety. Floating slab track systems in the form of track base plates and track troughs are individual solutions in which there is considerable variation in the engineering design and the types of resilient elements used. For this reason, a floating slab track system is always an individual engineering solution and therefore, it is not possible to define all specific conditions for the resilient elements in the present standard The most typical types of resilient elements are: - Full surface bearings, - Strip beari
Komité: CEN/TC 256 (Railway applications)
Opprinnelse:
Sluttdato: 19. aug 2021
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This European Standard specifies requirements for the approval of a welding process by a MFBW machine at sites other than fixed plant, as well as the welding contractor together with the requirements for subsequent welding production. Where a MFBW machine is to be used in a static but temporary situation, the requirements of this part of the standard shall apply. It applies to new Vignole R200, R220, R260, R260Mn, R320Cr, R350HT, R350LHT, R370CrHT and R400HT grade rails of 46 kg/m and above, as contained in EN 13674-1, welded by a MFBW machine at sites other than a fixed plant and intended for use on railway infrastructures. This European Standard applies to the welding of rails into welded strings.
Komité: SN/K 81 (Geotekniske laboratorie- og feltundersøkelser)
Opprinnelse: SN
Sluttdato: 7. sep 2021
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Dieser Teil von ISO 22476 behandelt die Geräteanforderungen, die Durchführung und die Ergebnisdarstellung von elektrischen Drucksondierungen und Drucksondierungen mit der Piezospitze. ANMERKUNG 1 Dieser Teil von ISO 22476 erfüllt die Anforderungen für elektrische Drucksondierungen und Drucksondierungen mit der Piezospitze als Teil von geotechnischen Untersuchungen und Versuchen nach EN 1997 (alle Teile). Es werden zwei Unterkategorien von Drucksondierungen betrachtet: — die elektrische Drucksondierung (CPT), die die Messung des Spitzenwiderstandes und der Mantelreibung umfasst; — die elektrische Drucksondierung mit der Piezospitze (CPTU), die eine Drucksondierung mit zusätzlicher Messung des Porenwasserdruckes ist. Die CPTU-Sondierung wird wie eine CPT-Sondierung ausgeführt, mit dem Unterschied, dass der Porenwasserdruck an einer oder mehreren Stellen an der Oberfläche der Sondierspitze gemessen wird. ANMERKUNG 2 Sowohl die CPT-Sondierung als auch die CPTU-Sondierung können ohne Bestimmung der Mantelreibung ausgeführt werden; dies wird jedoch nicht in diesem Teil von ISO 22476 behandelt. Dieser Teil von ISO 22476 legt die folgenden Aspekte fest: a) Typ der Drucksondierung; b) Klasse der Drucksondierspitze nach Tabelle 1; c) Prüfkategorien nach Tabelle 2; d) die erreichbare Sondierlänge oder Sondiertiefe; e) die Höhe der Geländeoberfläche oder die Gewässergrundoberfläche am Ort der Drucksondierung mit Verweis auf eine Bezugshöhe; f) die Lage der Drucksondierung mit Bezug zu einem reproduzierbaren örtlich festgelegten Lagebezugs-punkt; und g) Porenwasserdruck-Dissipationsversuche. ANMERKUNG 3 Dieser Teil von ISO 22476 behandelt CPT-Sondierungen an Land und im Nearshore-Bereich. Für Anforderungen an CPT-Sondierungen in Offshore-Bereichen siehe ISO 19901-8.
Komité: CEN/TC 396/WG 8 (Test methods)
Opprinnelse: SN
Sluttdato: 9. sep 2021
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This document describes a method for the determination of the loss on ignition (wLOI) of fine, intermediate, composite and coarse soils, organic soils and anthropogenic materials (according to EN 16907-2) after ignition under air at 550°C. The loss of mass suffered by these materials at 550 °C is usually due to the release of volatile compounds, water (absorbed, crystalized or structural) and gases from decomposition of organic matter and inorganic substances such as sulfur, sulphides or hydroxides (e.g. H2O, CO2, SO2). A method is given in Annex B in order to estimate the organic matter content (COM) from the value of wLOI for clayed soils.