PD CEN/TR 16142:2011 - Concrete. A study of the characteristic leaching behaviour of hardened concrete for use in the natural environment

PD CEN/TR 16142:2011

Concrete. A study of the characteristic leaching behaviour of hardened concrete for use in the natural environment

Status : Current   Published : March 2011

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This Technical Report describes a method for characterising the time-dependent leaching behaviour of components from hardened concrete, for use in the natural environment. This method specifies the procedures for determining the controlling mechanism(s) for leaching of components, their effective diffusion coefficients, in the case of diffusion-control and their cumulative release behaviour over any period of time. This characterisation method consists of two leaching test procedures. A potential or availability (pulverised specimen) test and a diffusion (tank) [monolithic specimen] test. The test procedures produce leachates, the analytical procedures for which are not included in this Technical Report. This Technical Report does not comprise a compliance method. NOTE 1 The information obtained from the method is quantitative. In the absence, however, of similar information for other construction materials or compliance criteria for acceptable/unacceptable performance of hardened concrete, the data obtained with neither permit a relative nor an absolute assessment of the environmental quality/compatibility of the concrete, unless, by default, in the case where leached concentrations of environmentally significant components are at, or below, their analytical limits of detection. NOTE 2 In principle, this method could be used to characterise the leaching behaviour of hardened concrete, irrespective of the exposure conditions (e.g. natural environment, contact with drinking water etc.) which the concrete would experience in service. It should be noted, however, that a European standard test method for the extraction/migration of mineral micropollutants is also likely to be developed by CEN/TC 164 - Water supply. NOTE 3 Analytical procedures for determining concentrations of components in leachates and which may be suitable for the purposes of this Technical Report are being developed by CEN/TC 292 - (...)




Standard NumberPD CEN/TR 16142:2011
TitleConcrete. A study of the characteristic leaching behaviour of hardened concrete for use in the natural environment
StatusCurrent
Publication Date31 March 2011
Normative References(Required to achieve compliance to this standard)NEN 7341:1995, NEN 7345:1995, EN 12390-2, EN 12390-7
Informative References(Provided for Information)EUR 17869 EN 1997, EN 206-1, ISO 5725
International RelationshipsCEN/TR 16142:2011
DescriptorsConcretes, Cements, Construction materials, Leaching, Chemical diffusion, Contamination, Water pollution, Pollution, Environmental engineering, Chemical analysis and testing
ICS91.100.10
91.100.30
Title in GermanZement. Eine Untersuchung der bezeichnenden Auslaugungseigenschaften von ausgehärtetem Beton zur Verwendung in natürlichen Umgebungen
CommitteeB/516/12
ISBN978 0 580 71784 0
PublisherBSI
FormatA4
DeliveryYes
Pages60
File Size819.7 KB
Price£254.00


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