Anläggningsarbete

Ämnesområden: Körbana
Kommittébeteckning: SIS/TK 202 (Vägmaterial)
Källa: CEN
Svarsdatum: den 12 mar 2018
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The aim of the test is to determine the cohesion increase of a bituminous mixture in fixed temperature and hygrometry conditions, using a spreadability-meter.

This European Standard specifies a method to measure the spreadability characteristics of asphalt which are able to vary with time. It may be used for the determination of the delay between manufacturing and laying. It is intended to be assistance for mixture design rather than a type test.

This European Standard applies to bituminous mixtures both those made up in laboratory and those resulting from work site sampling, with an upper aggregate size not larger than 31,5 mm. It is not applicable to mastic asphalt.

Ämnesområden: Körbana
Kommittébeteckning: SIS/TK 202 (Vägmaterial)
Källa: CEN
Svarsdatum: den 12 mar 2018
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This European Standard describes a series of accelerated protocols for curing of bituminous mixtures with bitumen emulsion in order to assess their properties.

The protocols should be selected according to the type of mixture, the type of specimen, the test to be carried out and the conditions of the place of use.

This European Standard applies on mixtures, specimens and cores, prepared in the laboratory and/or taken from the worksite.

The laboratory curing procedure is designed for asphalt mixtures containing bitumen emulsions, but it could also be used for other types of asphalt mixture that require curing in order to reach their potential strength.

Ämnesområden: Körbana
Kommittébeteckning: SIS/TK 202 (Vägmaterial)
Källa: CEN
Svarsdatum: den 12 mar 2018
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This European Standard defines three procedures to evaluate the compatibility of the constituent materials of a bituminous mixture with bitumen emulsion. These organoleptic methods can be used together to evaluate the compatibility of the constituent materials after a hand mixing procedure for given emulsion and water content:

— Method A describes a test method to determine visually the degree of coating;

— Method B describes a test method to determine the hydric aspect;

— Method C describes a test method to determine the consistency.

This European Standard applies on mixtures prepared in laboratory or taken from the plant.

Ämnesområden: Körbana
Kommittébeteckning: SIS/TK 202 (Vägmaterial)
Källa: CEN
Svarsdatum: den 12 mar 2018
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This European Standard specifies a method for compacting cylindrical specimens of bituminous mixtures, to be used for subsequent testing. A given mass of bituminous mixture is compacted in a cylindrical mould by applying static compression loads on the top and the bottom of the specimen.

Ämnesområden: Körbana
Kommittébeteckning: SIS/TK 202 (Vägmaterial)
Källa: CEN
Svarsdatum: den 12 mar 2018
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This European Standard specifies requirements for plant mixtures of the mix group Asphalt concrete with bituminous emulsion for use on roads, and other trafficked areas. Asphalt concrete with bituminous emulsion is used for surface courses, binder courses, regulating courses, and bases. It is a mixture in which mechanical properties evolve over time following installation. This is not just in terms of cooling, as other asphalts, but also includes curing effects.

NOTE Asphalt concrete with bituminous emulsion is a mixture in which mechanical properties evolve over time following installation because of curing.

Mixtures utilizing bituminous emulsion based on in situ recycling are not covered by this standard.

This European Standard includes requirements for the selection of the constituent materials. It is designed to be read in conjunction with:

— Annex A Product Type Assessment (Normative);

— Annex B Performance characteristic assessment (Informative);

— Annex C Factory Production Control (Normative).

Kommittébeteckning: SIS/TK 226 (Plaströrssystem)
Källa: ISO
Svarsdatum: den 25 mar 2018
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This document, in conjunction with ISO 11296-1, specifies requirements and test methods for pipes which are formed on site by spirally winding and jointing a pre-manufactured profiled plastics strip, or a profiled plastics strip and integral locking joiner strip, and used for the renovation of underground non-pressure drainage and sewerage networks.

It applies to spirally-wound pipes of fixed or variable diameter made of profiled plastics strips, with or without steel stiffening elements, and installed by one of two methods.

The first method employs a dedicated winding machine in front of the open end of an existing pipeline, e.g. in a manhole. The pipes thus formed are simultaneously inserted into the existing pipeline by the winding forces, and by certain techniques can also be expanded in diameter after or during insertion.

The second method employs a dedicated winding machine which forms the pipe as it traverses the existing pipeline from one manhole to the next.

It applies to profile plastics strips of unplasticized poly(vinyl chloride) (PVC-U) with integral locking mechanism, or of high density polyethylene (HDPE) with integrally welded joints.

Kommittébeteckning: SIS/TK 183 (Geoteknik och geokonstruktioner)
Källa: CEN
Svarsdatum: den 10 apr 2018
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This International standard specifies two laboratory test methods for the determination of effective shear strength parameters for soils under consolidated drained conditions using either a shear box or ring shear device. The shearbox test is generally used for the determination of peak effective shear strength parameters. The ring shear test is generally used for the determination of residual effective shear strength parameters of fine grained soils.

Residual effective shear strength parameters may also be obtained from shear box tests and peak effective shear strength parameters may also be obtained from ring shear tests.

This standard is applicable to the laboratory determination of effective shear strength parameters for soils in direct shear within the scope of geotechnical investigations.

The test method consists of placing the test specimen in the direct shear device, applying a pre-determined normal stress, providing for draining (and wetting if required) of the test specimen, consolidating the specimen under normal stress and then shearing the specimen. This shearing is imposed by displacing one part horizontally, relatively with respect to the other part of the specimen at a constant rate of shear-deformation. The shearing force and the horizontal and vertical displacements are measured as the specimen is sheared. Shearing is applied slowly enough to allow excess pore pressures to dissipate by drainage so that effective stresses are equal to total stresses.

The tests included in this standard are for undisturbed, remoulded, re-compacted or reconstituted soils. The procedure describes the requirements of a determination of the shear resistance of a specimen under a single normal stress. Generally three or more similar specimens from one soil are prepared for shearing under three different normal pressures to allow the shear strength parameters to be determined.

Special procedures for preparation and testing the specimen, such as staged loading and pre-shearing or for interface tests between soils and other materials, are not covered in this standard procedure.

NOTE 1 This document fulfils the requirements of the determination of the drained shear strength of soils in direct shear for geotechnical investigation and testing in accordance with EN 1997-1 and EN 1997-2.

Kommittébeteckning: SIS/TK 183 (Geoteknik och geokonstruktioner)
Källa: CEN
Svarsdatum: den 10 apr 2018
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This International Standard specifies methods for the laboratory determination of the water flow characteristics in soil.

This International Standard is applicable to the laboratory determination of the coefficient of permeability of soil within the scope of geotechnical investigations.

The permeability test is carried out on a cylindrical test specimen that is either confined laterally by a rigid container or by a flexible membrane. The specimen is subjected to differential hydraulic head and the water flow is measured under either a constant or falling head. The results are used to determine the coefficient of permeability of the soil specimen. Tests may be carried out on undisturbed, remoulded, compacted or reconstituted specimens.

The calculation of coefficient of permeability assumes the application of Darcy’s law for laminar flow under saturated conditions.

The size of the specimen may not adequately represent the fabric features present in field conditions.

NOTE This document fulfils the requirements of the determination of the coefficient of permeability of soils in the laboratory for geotechnical investigation and testing in accordance with EN 1997-1 and EN 1997-2.