NT Methods Archive

Here you can find and download all published NT Methods.

NT Methods Files

File size: 48.93 KB Download

Concrete, hardened: Ultrasonic pulse velocity (NT BUILD 213)

NT BUILD 213

  • This NORDTEST method is intended for the determination of the ultrasonic pulse velocity in concrete employing a s.c. dual recording equipment. Ultra sound is sound with a frequency above 20 kHz, (see Note 1).

File size: 180.15 KB Download

Concrete, hardened: Core bending test (NT BUILD 212)

NT BUILD 212

  • This NORDTEST method is intended for the determination of the force that is needed to break off a concrete cylinder from a completed object of the measures stated in Fig. 1. This force is here defined as the breaking force.

File size: 70.48 KB Download

Concrete, hardened: Pullout strength (NT BUILD 211)

NT BUILD 211

  • This NORDTEST method is intended for the determination of the force needed for pulling out a circular pullout insert that has been cast in the concrete. This force is in this context defined as the pullout force. It is also possible to exert a pull with a certain amount of force without thereby causing a break in the concrete.(See Note 1).

File size: 25.13 KB Download

Concrete, hardened: Rebound number (NT BUILD 210)

NT BUILD 210

  • This NORDTEST method is intended for the-determination of the rebound number of a concrete surface, that is, the value obtained when a rebound hammer is used in the manner described in 4, (Note 1).

File size: 30.43 KB Download

Concrete, hardened: Chloride content by volhard titration (NT BUILD 208s)

NT BUILD 208s

  • This Nordtest method can be used for determination of the total chloride content in hardened concrete by dissolving the concrete dust in a solution of nitric acid followed by Volhard titration. Another possibility is to use potentiometric titration which gives better precicion and accuracy. This method is not described here.

File size: 54.11 KB Download

Concrete, hardened: Chloride content by volhard titration (NT BUILD 208)

NT BUILD 208

  • This Nordtest method can be used for determination of the total chloride content in hardened concrete by dissolving the concrete dust in a solution of nitric acid followed by Volhard titration. Another possibility is to use potentiometric titration which gives better precicion and accuracy. This method is not described here.

File size: 32.57 KB Download

Concrete, hardened: Density (NT BUILD 207)

NT BUILD 207

  • This NORDTEST method is intended for the determination of the density of test specimens of concrete made from normally occurring types of rock-type aggregate. The aim of the method is to determine the density of the concrete with an accuracy within ± 20 kg/m3.

File size: 22.38 KB Download

Concrete, hardened: Compressive strength – accelerated curing for 24 hours (NT BUILD 206)

NT BUILD 206

  • The NORDTEST method is intended for the determination of the compressive strength of test specimens at 24 hours age after they have been made subject to heat curing.

File size: 51.63 KB Download

Concrete, hardened: Modulus of elasticity in compression (NT BUILD 205)

NT BUILD 205

  • This NORDTEST method is intended for the determination of the modulus of elasticity of test specimens made of hardened concrete with normally existing rock-type aggregate.

File size: 42.77 KB Download

Concrete, hardened: Tensile strength of test specimens (NT BUILD 204)

NT BUILD 204

  • This NORDTEST method is intended for the determination of the tensile strength of cast or core drilled test specimens of hardened concrete made with normally existing rock-type aggregate, see Comments.

File size: 23.42 KB Download

Concrete, hardened: Compressive strength of test specimens (NT BUILD 203)

NT BUILD 203

  • This NORDTEST method is intended for the determination of the compressive strength of cast or drilled test specimens of hardened concrete made with normally existing rock-type aggregate.

File size: 24.47 KB Download

Concrete, hardened: Sampling and treatment of cores for strength tests (NT BUILD 202)

NT BUILD 202

  • This NORDTEST method is intended for the sampling and treatment of cylindrical test specimens of concrete intended for determination of strength and containing naturally occurring rock-type aggregate.

File size: 26.63 KB Download

Concrete: Making and curing of moulded test specimens for strength tests (NT BUILD 201)

NT BUILD 201

  • SCOPE AND FIELD OF APPLICATION

    This NORDTEST method is intended for the making and curing of cast test specimens made from concrete containing naturally existing rock-type material, which are intended for strength tests.

    The method presupposes that the maximum nominal particle size in the concrete is at the most l/3 of the smallest measure of the intended test specimen and that the consistency of the fresh concrete is more fluid than 20 Vebe acc. to NT BUILD 193.

    In the main, the method agrees with ISO/DIS 2736/2.3. With regard to deviations see Comments.

File size: 51.63 KB Download

Concrete, hardened: Dimensions of test specimens (NT BUILD 200)

NT BUILD 200

  • This NORDTEST method defines the recommended dimensions of test specimens of hardened concrete, made in the shape of a cube or a cylinder. Furthermore, the method specifies how to determine the shape- and size deviations of test specimens.

File size: 18.76 KB Download

Concrete, fresh: Chloride content (NT BUILD 199)

NT BUILD 199

  • This NORDTEST method specifies a method for the determination of the chloride content in fresh concrete.

File size: 29.62 KB Download

Dwellings: Radon daughter concentration (nt build 150)

NT BUILD 150

  • This NORDTEST method refers to short-time measurements of radon daughter concentration using a filter method and simultaneous measurement or estimation of the air change rate.

File size: 101.24 KB Download

Windows : Maneuvrability (NT BUILD 149)

NT BUILD 149

  • This Nordtest method describes a method for measuring the forces required to unfasten, open, close, and fasten movable parts of a window.

File size: 24.41 KB Download

Building sealants: Ability to accomodate movements (NT BUILD 147)

NT BUILD 147

  • This NORDTEST method describes a testing procedure for determining the ability to accomodate movements of various types of building sealants.

File size: 118.71 KB Download

Adhesives for floor and wall coverings: Resistance against plasticiser (NT BUILD 146)

NT BUILD 146

  • This Nordtest method is intended for the determination of resistance against plasticiser for adhesives.

File size: 23.03 KB Download

Adhesives for floor and wall coverings: Discolouration of coverings (NT BUILD 145)

NT BUILD 145

  • This NORDTEST method is intended for the determination of different adhesives' influence on discolouration of floor and wall coverings which are exposed to UV-light.

File size: 67.43 KB Download

Adhesives for floor and wall coverings: Peel off strength (NT BUILD 143)

NT BUILD 143

  • This NORDTEST method is intended for the determination of the force necessary to peel off a bonded floor or wall covering from its support.

File size: 67.39 KB Download

Adhesives for floor and wall coverings: Shear strength (NT BUILD 142)

NT BUILD 142

  • This NORDTEST method is intended for the determination of the tensile transverse resistance of a bond between a floor or wall covering and its support.

File size: 37.58 KB Download

Adhesives for floor and wall coverings: Long-term shear strength (NT BUILD 141)

NT BUILD 141

  • This Nordtest method is intended for the determination of the long-term shear strength which an adhesive is able to transmit.

File size: 294.68 KB Download

Flat roofs - coverings: Bond strength (NT BUILD 138)

NT BUILD 138

  • The purpose of this NORDTEST method is to measure, in a non-destructive way, if the conservative force from gluing or mechanical fastning of a roof covering of bituminous felt or eq., is strong enough to compensate for the destructive force from wind load (under-pressure only). For testing purposes the force equal to the under-pressure from the wind is created by a test apparatus capable of providing the necessary under-pressure over a sufficient large test area.

File size: 580.61 KB Download

Wall constructions: Strength and rigidity at combined vertical and horizontal loading (NT BUILD 137)

NT BUILD 137

  • This NORDTEST method concerns test loading of loadbearing exterior walls. The method involves the use of vertical dead and live loads combined with a static, uniformly distributed windload. The method may also be applied for testing of interior walls designed to withstand internal windloads.

File size: 125.27 KB Download

Mortar joints: Density - radiometric method (NT BUILD 123)

NT BUILD 123

  • This NORDTEST method describes a gamma-radiometric method for the non-destructive testing of density of mortar joints under precast wall elements and pillars. A reasonably high density is necessary to ensure the load carrying capacity of the joints.

File size: 64.37 KB Download

Floors in sport centres: Impact dampening (NT BUILD 122)

NT BUILD 122

  • This NORDTEST method specifies a method to determine the impact dampening of sport floors when subjected to concentrated impact loads (e g simulating the impact from jumping or falling athletes).

File size: 44.62 KB Download

Steep roofs - coverings : Tightness (NT BUILD 118)

NT BUILD 118

  • The present NORDTEST-method is intended primarely for testing the rain tightness of overlapping roofing materials on sloping roofs. The method is based on the principle of a combined rain- and windload and, if relevant, a pressure gradient over the roof covering.

File size: 73.26 KB Download

Windows, window-doors, external doors, facades: Pulsating air pressure test (NT BUILD 116)

NT BUILD 116

  • This NORDTEST method describes a way of testing water resistance under pulsating air pressure for building elements and components to be fitted in vertical external walls and supplied in the form of completely assembled and finished units. The method is especially well suited for research and development work as well as for prototype testing of components.

File size: 49.13 KB Download

Structural wood - finger joints: Proof loading (NT BUILD 115)

NT BUILD 115

  • This NORDTEST-method specifies how to proof-load finger joints in structural wood. A criteria for the rejection of inferior specimens is established.

<<  11 12 13 14 15 [1617 18 19  >>  

Nordtest

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”.