Building Archive

Building Files

File size: 1.88 MB Download

Test for thermal and weathering properties of aggregates: Determination of resistance to freezing and thawing with/without salt (NT BUILD 485 - Edition 2)


  • The revision and combination of the standards NT BUILD 485 and EN 1367-1 has led to some fundamental alterations.

File size: 44.29 KB Download

Building materials: Emission of volatile compounds - On-site measurements with Field and Laboratory Emission Cell (FLEC) (NT BUILD 484)


  • This method specifies a procedure for identification of planar emission sources on-site in buildings which may affect the indoor air quality.

File size: 25.52 KB Download

Mortar, hardened: Frost resistance (NT BUILD 483)


  • This NORDTEST method specifies a test method for determining the resistance of hardened mortars to freezing and thawing. The method is applicable to masonry and rendering mortars based on mineral binders.

File size: 161.18 KB Download

Building materials: Retention curve and pore size distribution (NT BUILD 481)


  • This test method covers the determination of the retention curve and the pore size distribution of porous building materials and soils using a combination of pressure plate, pressure membrane and/or sand box apparatuses.

File size: 102.42 KB Download

Cement: Heat of hydration (NT BUILD 480)


  • This method is used to determine the heat of hydration of cement in mortar, during the hardening process. The test procedure is identical to NT Build 388 and gives a specification regarding the mix proportion of the tested mortar. The heat developed is described as the amount of energy produced for different maturity ages of the mortar. To be able to define the heat development as energy per mass unit of cement, it is necessary to know the heat capacity of the components in the mortar.

File size: 30.49 KB Download

Natural building stones: Coefficient of thermal expansion (NT BUILD 479)


  • This method describes a laboratory procedure for determining the coefficient of thermal expansion of natural building stones. The test samples are exposed to temperatures ranging from 20 °C to 70 C°. For each change of temperature, the longitudinal expansion is recorded.

File size: 85.99 KB Download

Natural building elements: Shear strength of connections (NT BUILD 478)


  • The scope of this test method is to determine the shear strength of the fixing media between natural stone slabs and other substrate materials.

File size: 53.19 KB Download

Concrete, fresh: initial setting time and activation energy during setting (NT BUILD 476)


  • This NORDTEST method specifies a method for the determination of the initial setting of fresh concrete by measuring the heat development of the concrete during the first hours. A method of determination of the activation energy during the setting period is also specified.

File size: 23.40 KB Download

Relative humidity: Using electrical instruments with hygroscopic sensors (NT BUILD 475)


  • This test method is used for the determination of the relative humidity of ambient air by means of electric instruments with hygroscopic sensors. If the air temperature is also measured, the absolute moisture content can be determined.

File size: 27.21 KB Download

Relative humidity: Measuring with a dewpoint hygrometer (NT BUILD 474)


  • This test method is used for measurement of the moisture content of air by determination of the dewpoint temperature, using a dewpoint hygrometer. The results may be recalculated and expressed as the total moisture content of the air or as partial water vapour pressure. If the air temperature is measured at the same time, the method can be used for determination of the relative humidity of the air.

File size: 43.96 KB Download

Temperature and relative humidity of air: Measuring with a thermohygrograph (NT BUILD 473)


  • This test method covers the determination of temperature and relative humidity of ambient air by means of a thermohygrograph.

File size: 21.80 KB Download

Building materials: Degree of capillary saturation (NT BUILD 472)


  • This test method covers the determination of the degree of capillary saturation of porous building materials. The method is not applicable to wood in its present form.

File size: 491.61 KB Download

Wall coverings and bushings for water pipes and taps in bathrooms: Watertightness (NT BUILD 448)


  • Evaluation of the watertightness between wall coverings and bushings for water pipes and taps in bathrooms on the basis of tests with small test pieces.

    The scope of this Nordtest method is to test and evaluate the watertightness between watertight layers in wall coverings for bathrooms and bushings for water pipes and taps when exposed to water and mechanical actions in bathrooms in ordinary dwellings.

File size: 31.48 KB Download

Concrete, autoclaved aerated: Length changes due to moisture variations (NT BUILD 444)


  • This Nordtest method describes how to measure dimensional variations in autoclaved aerated concrete (AAC) exposed to different humidities.

    The method is primarily developed for testing freshly manufactured blocks or components, with special reference to quality declaration work at the factories, but the method can also be used for testing autoclaved aerated concrete cured over an extended period.

File size: 65.62 KB Download

Concrete, hardened: Accelerated chloride penetration (NT BUILD 443)


  • This Nordtest method specifies a procedure for the determination of penetration parameters for estimating the resistance against chloride penetration into hardened concrete or other cement-based materials.

    The resistance against chloride penetration is determined by accelerated testing.

File size: 33.07 KB Download

Masonry: Strength and modulus of elasticity in compression (NT BUILD 442)


  • This Nordtest method describes the procedure for the determination of the strength and the modulus of elasticity for masonry in compression.The method is applicable for masonry for which the slenderness of the test pieces is low so as to avoid second order effects.

File size: 88.19 KB Download

Gypsum and silicate boards: Moisture conditions characterised by electrical resistance (NT BUILD 441 - Edition 2)


  • This NORDTEST method describes a procedure for in-situ characterisation of the moisture conditions in gypsum and calcium silicate boards, e.g. bathroom walls. This is expressed by the relative humidity of the boards, which is important in relation to gluing properties, strength, formation of cracks etc. The measurements are carried out by means of electrical moisture meters. The method is based on the observation that the electrical resistance between two electrodes punched into a piece of board is a function of the moisture content of the board.

File size: 102.57 KB Download

Mortar, hardened: Compressive strength by indentation tests (NT BUILD 440)


  • This NORDTEST draft specifies a method for estimating the compressive strength of small mortar specimens. The method is especially suitable for specimens of set mortar cut from masonry structures.

File size: 35.84 KB Download

Concrete, hardened: relative humidity measured in drilled holes (NT BUILD 439)


  • This method describes the measurement of the relative humidity of concrete by single measurements on site in a drilled hole.

File size: 44.65 KB Download

Building materials: Emission of volatile compounds - field and laboratory emission cell (flec) (NT BUILD 438)


  • This general NORDTEST method specifies a laboratory test procedure for evaluation of the emission of volatile compounds from materials as well as combinations of materials which may affect indoor air quality. The method can be used to rank various products and product types with respect to their emission profiles (e.g. emission factors, specific organic compounds emitted) in e.g. product development.

File size: 24.54 KB Download

Concrete, hardened and mortar: Calcium oxide and soluble silica contents (NT BUILD 437)


  • This is a method for determining calcium oxide content and soluble silica content of concrete. The results can be used to estimate the cement content of concrete and sometimes the type of cement. However, this estimation is outside the scope of this method.

File size: 31.93 KB Download

Concrete and mortar: Binder content by calculation from chemical analysis (NT BUILD 436)


  • The method can be applied to calculation of the cement content of concrete and the binder content of mortar on the basis of chemical analysis of the calcium oxide and soluble silica content in the sample and loss on ignition of the sample.

File size: 20.05 KB Download

Roofing membrane underlay (insulation material): Ageing due to increased humidity and heat (NT BUILD 434)


  • The aim of this method is to expose insulation materials to accelerated ageing due to increased temperature and heat.

File size: 71.90 KB Download

Concrete: Cracking tendency - exposure to drying during the first 24 hours (NT BUILD 433)


  • This Nordtest method is intended for the determination of the cracking tendency of concrete at early ages. The test is performed on 3 ring shaped specimens exposed to an air stream of defined velocity, temperature and relative humidity the first 20-24 hours after casting. The crack development is judged quantitatively at the end of this period.

File size: 55.01 KB Download

Indoor climate, relative humidity: Measured by wooden probes (NT BUILD 432)


  • The test method specifies equipment and a procedure to measure the average relative humidity of air over a long period of time.

    The average relative humidity of air in an environment is determined by first deploying a number of wooden probes and after a period of time there will be a balance between the humidity in the probe and the surrounding air. The probes are then brought back to the laboratory where the relative humidity measurements on the probes are performed.

File size: 74.85 KB Download

Roof sarking: Impact resistance (NT BUILD 431)


  • This Nordtest method specifies a test procedure for determining the soft body impact resistance of sarking or nonloadbearing roof underlay on timber rafters.

File size: 18.13 KB Download

Concrete and mortar, polymer cement (pcc): Consistency (NT BUILD 429)


  • This method is a recommendation for the appropriate laboratory test method for consistency of polymer cement concretes and mortars (PCC) to be used as a simple quantitative statement of behaviour under particular circumstances.

File size: 16.71 KB Download

Concrete and mortar, polymer cement (pcc): Moulded test specimens - curing (NT BUILD 428)


  • This method is intended for the making and curing of cast test specimens made from polymer cement concrete and mortar (PCC) containing polymer latex.

    The method describes the optimum curing and storage conditions of PCC specimens. The initial wetting period is necessary to ensure satisfactory cement hydration, while the late dry period is needed to give the optimum binding conditions for the latex.

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