CEN/TC 177/WG 3 - Test methods

This document specifies a method of determining the freeze-thaw resistance of autoclaved aerated concrete manufactured according to EN 12602 or EN 771-4.

This document specifies a method of determining the long term bond behaviour between reinforcing bars and autoclaved aerated concrete (AAC) in prefabricated reinforced components according to EN 12602. The test method is conceived to obtain values for the long term bond strength fb,l which are obtained in a final short term test. The test is performed for different combinations of AAC type, bar shape, and corrosion protection systems.

This document specifies a pull-out test method for the verification of the applicability of the declared outer diameter of the transverse bars with corrosion protection coating tot,g in the calculation of the anchorage capacity of transverse anchorage bars (see A.10.3 in prEN 12602:2006) in prefabricated reinforced components of autoclaved aerated concrete (AAC).

This European Standard specifies methods of determining the shear strength for in-plane forces of joints between prefabricated components made of autoclaved aerated concrete (AAC) according to prEN 12602 or lightweight aggregate concrete with open structure (LAC) according to EN 1520.

This Euopean Standard specifies a method for measuring the relative length changes due to drying (drying shrinkage) of autoclaved aerated concrete manufactured according to EN 771-4 or prEN 12602. The shrinkage characteristics determined according to this method are the following: The conventional reference value of drying shrinkage is the relative length change between two specified moisture contents. The total value of drying shrinkage is the relative length change due to drying from the saturated state until reaching constant length under specified climatic conditions. Other drying shrinkage values may be determined between other parameters to meet other specified national requirements.

This European Standard specifies methods for verification of the effectiveness of the corrosion protection of reinforcing steel embedded in autoclaved aerated concrete (AAC) components according to prEN 12602 or components of lightweight aggregate concrete with open structure (LAC) according to prEN 1520.

This European Standard specifies a method of determining the bond behaviour between reinforcing bars and autoclaved aerated concrete (AAC) in prefabricated reinforced components according to prEN 12602. The test method is conceived to obtain values for the short term bond strength, tbm, with different combinations of concrete type, bar shape and corrosion protection system.

This European Standard specifies a method of determining the shear strength of welded joints in reinforcements intended for use in prefabricated components made of autoclaved aerated concrete (AAC) according to prEN 12602 or lightweight aggregate concrete with open structure (LAC) according to prEN 1520.

This European Standard specifies a method of determining the shear strength for out-of-plane forces of joints between prefabricated components made of autoclaved aerated concrete (AAC) according to prEN 12602 or lightweight aggregate concrete with open structure (LAC) according to prEN 1520.

This European Standard specifies a method of determining the shear strength under short-term loading between the different layers of prefabricated multilayer components made of autoclaved aerated concrete (AAC) according to prEN 12602 or lightweight aggregate concrete with open structure (LAC) according to prEN 1520. This test method is suitable only for evaluation of conformity purposes during production of multilayer components.

This European Standard specifies a method of determining the mechanical performances of prefabricated components made of autoclaved aerated concrete (AAC) according to prEN 12602 or lightweight aggregate concrete with open structure (LAC) according to prEN 1520 under longitudinal load which may be combined with transverse load. These performances include: - the deflections and maximum crack width in the serviceability limit state; - the loadbearing capacity (failure load); - the load-(vertical) deformation diagram, if required.

This European Standard specifies a method of determining the steel stresses in longitudinal bars ad midspan of unloaded reinforced components made of autoclaved aerated concrete (AAC) according to prEN 12602.

This European Standard specifies a method of determining the mechanical perfor- mances of prefabricated reinforced components of autoclaved aerated concrete (AAC) or lightweight aggregate concrete with open structure (LAC) according to prEN 1520 under transvere load. These include: - the midspan deflections for different load levels; - the cracking load; - the ultimate load by progressive loading until collapse; - the position and the shape of fracture.

This European Standard specifies a method of determining the static static modulus of elasticity in compression of autoclaved aerated concrete (AAC) or lightweight aggregate with open structure (LAC) according to prEN 1520.

This European Standard specifies the procedure for the determination of the moisture content of prefabricated components of autoclaved aerated concrete (AAC).

This European standard specifies the procedure for the determination of the longitudinal long-term strains (creep strains) of test specimens taken from prefabricated components of autoclaved aerated concrete (AAC)     or lightweight aggregate concrete with open structure (LAC) according to EN 1520 due to a constant compression stress sustained over a long period of time.

This European Standard specifies a method of determining the flexural (tensile) strength of autoclaved aerated concrete (AAC) by means of prismatic test spe- cimens taken from prefabricated components.

This European standard specifies a method of determining the flexural (tensile) strength of lightweight aggregate concrete with open structure (LAC) according to prEN 1520 by means of prismatic test specimens taken from prefabricated components.

This European standard specifies a method of determining the essential dimensions and of verification of squareness of prefabricated reinforced components made of autoclaved aerated (ACC) or lightweight aggregate concrete with open structure according to prEN 1520.

This European standard specifies a method of fetermining the dry density of lightweight aggregate concrete with open structure (LAC).

This European standard specifies a method of determining the bond behaviour between reinforcing bars and autoclaved aerated concrete (AAC). The test may be used for quality control purposes. Values to be used in design cannot be derivedfrom the test results.

This European Standard specifies the procedure for the determination of the dry density of prismatic specimens of autoclaved aerated concrete.

This document specifies a method of determining the freeze-thaw resistance of autoclaved aerated concrete manufactured according to prEN 12602 or EN 771-4.

This European Standard specifies a method of determining the long term bond behaviour between reinforcing bars and autoclaved aerated concrete (AAC) in prefabricated reinforced components according to prEN 12602. The test method is conceived to obtain values for the long term bond strength fb,l which are obtained in a final short term test. The test is performed for different combinations of AAC type, bar shape, and corrosion protection systems.

This European Standard specifies a method of determining the shear strength for in-plane forces of joints between prefabricated components made of autoclaved aerated concrete (AAC) according to prEN 12602 or lightweight aggregate concrete with open structure (LAC) according to prEN 1520.

This European Standard specifies the procedure for the determination of the relative deformation during drying (drying shrinkage) of autoclaved aerated concrete.

This European Standard specifes a method of determining theination of the compressive strength of lightweight aggregate concrete with open structure (LAC) according to prEN 1520. The reference test method uses test specimens (core or cubes) taken from prefabricated components. Test specimens cast separately in moulds may also be used. This procedure is described in Annex A.

This European Standard specifies the procedure for the determination of the compressive strength of autoclaved aerated concrete.

This European standard specifies methods for verification of the effectiveness of the corrosion protection of reinforcing steel embedded in autoclaved aerated concrete (AAC) components or components of lightweight aggregate concrete with open structure (LAC) according to prEN 1520. Tests according to this standard are not required for LAC-components if corrosion protection is achieved by embedding the reinforcing bars completely in a zone of concrete with closed structure according to 4.4.3.3 of prEN 1520.