NT Technical Reports Archive - This is the subtitle

Here you can find and download all published NT Technical Reports.

NT Technical Reports Files - Subtitle above the items

File size: 498.89 KB Download

Biodegradability testing of the municipal solid waste reject (NT TR 560)

NT TR 560

  • Sustainable development requires an environmentally sound, cost effective and socially acceptable management of municipal and industrial waste. Landfilling of untreated municipal solid waste (MSW) is known to lead to emissions of leachate and landfill gas, above all methane, which contributes to the greenhouse effect.

File size: 4.61 MB Download

Waste testing in Baltic countries - Transfer and exchange of information on leaching tests (NT TR 559)

NT TR 559

  • The aim of the project was to transfer and exchange information on waste leaching tests gained in Nordtest projects. Nordtest supports the development of common research methods in the Nordic countries and has also published several test methods.

File size: 317.96 KB Download

Nordic evaluation of methods for testing fresh self-compacting concrete (NT TR 558)

NT TR 558

  • In this study a modified inter-comparison test was proposed for evaluating the precision of methods for testing fresh SCC whose properties are not identical from laboratory to laboratory or even from batch to batch. The modification includes collecting a number of sets of similar equipment and carrying out a local inter-comparison test in each laboratory by different operators, each operating a number of sets of equipment.

File size: 2.14 MB Download

Road traffic - Vehicle noise emission (NT TR 557)

NT TR 557

  • A method for the determination of source parameters for estimation of road vehicle noise has been developed. The main parts of the method have been tested with measurements and this verifies that the method can be used in practice.

File size: 3.68 MB Download

Measurement of Drum Noise - A Pilot Project (NT TR 556)

NT TR 556

  • Drum noise from floors and floorings has been a building acoustics issue for many years although an international standardized measurement method has never been made.

File size: 2.27 MB Download

Interpretation of new test standards for fire resistance test (NT TR 555)

NT TR 555

  • The objective of the project has been to find a common Nordic approach on how the new EN test standards on testing of fire resistance of building products should be applied until the CE marking has been fully established.

File size: 2.25 MB Download

A new standard for machine strength grading of timber - assessment and application (NT TR 554)

NT TR 554

  • A new standard “prEN 14081 Timber structures – Strength graded structural timber with rectangular cross section” is under development. This standard lays down the requirements for visual and machine graded structural timber and results in the possibility to CE-mark structural timber.

File size: 2.09 MB Download

Fasteners for timber frame sheeting – Development of a test method for single fasteners (NT TR 553)

NT TR 553

  • The report deals with a test method to evaluate the mechanical response of single fastener joints for sheeting of timber frames. The materials investigated include chipboards, gypsum boards and fibreboards.

File size: 2.12 MB Download

A method for glue bond quality testing of flange_web adhesive connections of wooden I-beams (NT TR 552)

NT TR 552

  • A test method for assessing the quality of glue bonds in the web-flange joint of I-beams has been developed. The method is based on a shear test of small pieces cut from the beam.

File size: 6.40 MB Download

Test methods adapted for alternative and recycled, porous aggregate materials (Part 3 - Water absorption) (NT TR 550)

NT TR 550

  • This is the third report in a series of projects dealing with test methods for mainly alternative and recycled aggregates (1292-96 and 1393-97). This study focuses on the problem of water absorption of porous aggregates in atmospheric pressure in accordance with EN 1097-6 Determination of particle density and water absorption, and the implication on durability aspects.

File size: 1.49 MB Download

Improved method for AFTM G48 corrosion testing of welds (NT TR 548)

NT TR 548

  • The Nordtest project reviews common practices based on ASTM G48 in order to establish and validate an improved method for pre-qualification of stainless steel welds. Different weld qualities of super duplex stainless steel (UNS32750) were tested in the comparative study.

File size: 275.72 KB Download

Tests of cellular plastic (XPS and EPS) insulation boards, resistance to cyclic compressive loading with square-wave load (NT TR 547)

NT TR 547

  • Cellular plastic boards can be used in railway embankments in order to lower the pressure on the underground and to provide insulation. The long-term deformation  resistance is of great importance for this application.

File size: 3.47 MB Download

Korrosjonspåvirkning fra brannimpregnert trevirke - En ringtest og ny prøvemetode (NT TR 546)

NT TR 546

  • En akselerert metode for å vurdere korrosjonspåvirkningen fra brannimpregnert tre på festemidler er testet ut ved å eksponere prøvene i et fuktig klima (RF = 90 %) ved 27 °C og sammenlikne med korrosjon i utendørs eksponering i ett år.

File size: 745.38 KB Download

Suitability of XRF-methods on on-site testing of waste materials (NT TR 545)

NT TR 545

  • In the EU landfill directive the assessment of waste suitability on disposal is divided into three levels according to intended use. The lowest level, called on-site verification usually takes place on the landfill site and is mainly for control purposes to confirm that the waste quality meets characteristics defined in the two upper acceptability assessment phases.

File size: 1.70 MB Download

Method for determining the composition of airborne particle pollution (NT TR 544)

NT TR 544

  • The objective of the project was to develop a method or measuring process to determine the composition of airborne particulate matter. For this purpose, both physical and chemical analysis were performed and multivariate calculations used to identify or simulate the mass fractions of each source material in real samples of particulate matter.

File size: 1.55 MB Download

Validation of communication safety critical control systems (NT TR 543)

NT TR 543

  • The purpose of this technical report is to provide a support to testing laboratories and industry constructors in designing and validating safety in distributed control systems. The report contains a summary of the basic characteristics and concepts specific to distributed systems as well as a description of the components e.g. bus systems and communication protocols.

File size: 1.76 MB Download

Transgenic raw materials in food production - Detection of transgene and heterologous protein levels (NT TR 542)

NT TR 542

  • The aim of the project was to find out through a model case whether the threshold of 1 % GM material in foods is detectable with the present analytical methods. The transgenic barley material was homozygotized through microspore culture for production of doubled haploid (DH) plants. The transgenic and non-transgenic barley samples were malted, mashed and fermented.

File size: 296.37 KB Download

Estimation of cement_binder profile parallel to the determination of chloride profile in concrete (NT TR 541)

NT TR 541

  • In this study, two methods for determination of calcium content parallel to the determination of chloride content have been proposed and evaluated for their precisions.

File size: 9.62 MB Download

Modelling of the radiative feedback from the flames in cone calorimeter (NT TR 540)

NT TR 540

  • The ignition and combustion properties of building materials are often studied using the Cone Calorimeter (ISO5660:1993, NT Fire 048:1993), where the sample is heated by a temporally and spatially constant incident radiative heat flux. After ignition, however, the heat transfer characteristics are changed due to the flame radiation and convection.

File size: 3.17 MB Download

CEN EN 12457 leaching test - Comparison of test results obtained by part 1 and 2 with test results obtained by part 3 (NT TR 539)

NT TR 539

  • The report compares leaching results obtained by two one-step batch leaching tests (en 12457 part 1 and 2) with leaching results obtained by a two-steps batch-leaching test (EN 12457 part 3). The effect of the used contact time and the effect of using different number of leaching steps were evaluated.

File size: 3.71 MB Download

Superpave test methods for asphalt - Procedure for DSR testing (NT TR 538)

NT TR 538

  • Between 1987 and 1993 in the U.S.A., the Strategic Highway Research Program (SHRP) surveyed all aspects of the physical tests currently carried out on bitumen, and it was shown that new performance-based methods, such as Dynamic Shear Rheometer (DSR), Bending Beam Rheometer (BBR) and Pressure Ageing Vessel (PAV), are needed.

File size: 2.41 MB Download

Handbook for calculation of measurement uncertainty in environmental laboratories (NT TR 537 - Serbian version)

NT TR 537 - Serbian version

  • This handbook is written for environmental testing laboratories in the Nordic countries, in order to give support to the implementation of the concept of measurement uncertainty for their routine measurements.

File size: 3.09 MB Download

Handbook for calculation of measurement uncertainty in environmental laboratories (NT TR 537 - Greek version)

NT TR 537 - Greek version

  • This handbook is written for environmental testing laboratories in the Nordic countries, in order to give support to the implementation of the concept of measurement uncertainty for their routine measurements.

File size: 750.93 KB Download

Håndbok for beregning af måleusikkerhed på miljølaboratorier (NT TR 537 - Danish version)

NT TR 537 - Danish version

  • This handbook is written for environmental testing laboratories in the Nordic countries, in order to give support to the implementation of the concept of measurement uncertainty for their routine measurements.

File size: 905.02 KB Download

Handbook for calculation of measurement uncertainty in environmental laboratories (NT TR 537 - Edition 3.1)

NT TR 537

  • This handbook is written for environmental testing laboratories in the Nordic countries, in order to give support to the implementation of the concept of measurement uncertainty for their routine measurements.

File size: 3.38 MB Download

Çevre Laboratuvarlarinda Ölçüm Belirsizligi Hesaplamalari için El Kitabi (NT TR 537 - Edition 3.1 Turkish version)

NT TR 537

  • This handbook is written for environmental testing laboratories in the Nordic countries, in order to give support to the implementation of the concept of measurement uncertainty for their routine measurements.

File size: 2.05 MB Download

Calibration procedures for atomic force microscopes (NT TR 536)

NT TR 536

  • More than 8 years of research in calibration of atomic force microscopes (AFM) has been condensed in to two procedures for calibration of metrology grade AFM instruments. The greatest success of the project is that DFM in September 2002 has - as one of the first laboratories in the world - successfully passed a technical assessment for using one of these procedures for accredited (i.e. traceable) AFM measurements.

File size: 515.00 KB Download

Method of Software Validation (NT TR 535 - Validation scheme)

NT TR 535 - Validation scheme

  • This Method of Software Validation is a tool intended to assist in validation of small and medium scale software used in accredited and other laboratories where software validation is required. The tool encompasses this technical report, which describes how to use the method and a Microsoft® Word 2000 report template, which guides the user through the validation task.

File size: 764.74 KB Download

Method of Software Validation (NT TR 535 - Main report)

NT TR 535 - Main report

  • This Method of Software Validation is a tool intended to assist in validation of small and medium scale software used in accredited and other laboratories where software validation is required. The tool encompasses this technical report, which describes how to use the method and a Microsoft® Word 2000 report template, which guides the user through the validation task.

File size: 653.65 KB Download

Method of Software Validation (NT TR 535 - Appendix 4)

NT TR 535 - Appendix 4

  • This Method of Software Validation is a tool intended to assist in validation of small and medium scale software used in accredited and other laboratories where software validation is required. The tool encompasses this technical report, which describes how to use the method and a Microsoft® Word 2000 report template, which guides the user through the validation task.

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Nordtest is a trademark of Nordic cooperation in conformity assessment. The emphasis of Nordtest is to develop, promote and innovate Nordic test methods and pre-normative activity. Nordtest endeavours to remove technical barriers to trade and promotes the concept: “Approved once, accepted everywhere”.