prEN 1520
(Main)Precast lightweight concrete products with an open structure
Precast lightweight concrete products with an open structure
This document covers, regardless of if manufactured in factories or in temporary plants on site under the same conditions, precast concrete elements made of lightweight concrete with an open structure, and with a dry density between 400 and 2000 kg/m3 intended for:
— solid, hollow core and multilayer load-bearing wall elements;
— solid, hollow core and multilayer non-load-bearing wall elements;
— retaining wall elements, excluding retaining walls intended to retain tanks or reservoirs of liquids and diaphragm walls (concrete sheet piling);
— solid, hollow core and multilayer roof elements, excluding ribbed floor elements and floor slabs elements;
— solid, hollow core and multilayer floor elements excluding floor elements with the intended use to carry traffic loads;
— solid and hollow core beams;
— solid piers;
— cladding elements;
— box culverts;
— components for noise barriers.
NOTE In addition to their loadbearing and encasing function, elements can also be used to provide fire resistance, sound insulation and thermal insulation.
Recycled lightweight concrete with an open structure (other than closed-loop recycling during production) is covered by this document.
Reused precast concrete elements made of lightweight concrete with an open structure are covered by this document.
Fertigteile aus haufwerksporigem Leichtbeton
Dieses Dokument gilt für vorgefertigte Bauteile aus haufwerksporigem Leichtbeton mit einer Trockenrohdichte zwischen 400 kg/m3 und 2 000 kg/m3, die, unabhängig davon, ob sie fabrikmäßig oder unter gleichen Bedingungen in zeitweise betriebenen Anlagen auf der Baustelle hergestellt werden, für Folgendes vorgesehen sind:
tragende Massiv-, Hohl- und mehrschichtige Wandelemente;
nichttragende Massiv-, Hohl- und mehrschichtige Wandelemente;
Stützwandelemente, ausgenommen Stützwände, die zur Sicherung von Tanks oder Flüssigkeitsspeichern vorgesehen sind, und Schlitzwände (Betonspundwandsetzung);
Massiv-, Hohl- und mehrschichtige Dachelemente, ausgenommen Deckenelemente mit Stegen und Bodenplatten- bzw. Geschossdeckenelemente;
Massiv-, Hohl- und mehrschichtige Deckenelemente, ausgenommen Deckenelemente, deren vorgesehener Verwendungszweck das Tragen von Verkehrslasten ist;
Massiv- und Hohlbalken;
massive Pfeiler;
Verkleidungselemente;
kastenförmige Hohlquerschnitte;
Bauteile für Lärmschutzwände.
ANMERKUNG Zusätzlich zu ihrer tragenden und raumabschließenden Funktion können die Bauteile auch für Zwecke des Brandschutzes, der Schalldämmung und der Wärmedämmung verwendet werden.
Dieses Dokument deckt rezyklierten haufwerksporigen Leichtbeton ab (sofern dieser nicht in einem geschlossenen Kreislauf-Recyclingsystem hergestellt wird).
Wiederverwendete vorgefertigte Betonbauteile aus haufwerksporigem Leichtbeton werden ebenfalls von diesem Dokument abgedeckt.
Produits préfabriqués en béton de granulats légers à structure ouverte
Le présent document couvre, qu’ils soient fabriqués en usine ou dans des installations temporaires sur site dans les mêmes conditions, les éléments préfabriqués en béton de granulats légers à structure ouverte, d’une masse volumique sèche comprise entre 400 kg/m3 et 2 000 kg/m3 destinés aux :
— éléments de murs porteurs pleins, alvéolés et multicouches ;
— éléments de murs non porteurs pleins, alvéolés et multicouches ;
— éléments de murs de soutènement, à l’exclusion des murs de soutènement destinés à retenir des réservoirs ou des citernes de liquides et des parois moulées (palplanches en béton) ;
— éléments de toiture pleins, alvéolés et multicouches, à l’exclusion des éléments de plancher nervurés et des éléments de dalle de plancher ;
— éléments de plancher pleins, alvéolés et multicouches, à l’exclusion des éléments de plancher destinés à supporter des charges de circulation ;
— poutrelles pleines et alvéolées ;
— trumeaux pleins ;
— éléments de parement ;
— cadres enterrés ;
— composants de dispositifs de réduction du bruit.
NOTE Outre leur fonction porteuse et d’encloisonnement, les éléments peuvent également être utilisés pour assurer la résistance au feu, l’isolation acoustique et l’isolation thermique.
Le présent document traite du béton de granulats légers à structure ouverte recyclé (ne provenant pas du recyclage en boucle fermée pendant la production).
Le présent document couvre les éléments préfabriqués en béton réutilisés de granulats légers à structure ouverte.
Montažni izdelki iz betona iz lahkega agregata z odprto strukturo
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2025
Montažni izdelki iz betona iz lahkega agregata z odprto strukturo
Precast lightweight concrete products with an open structure
Fertigteile aus haufwerksporigem Leichtbeton
Produits préfabriqués en béton de granulats légers à structure ouverte
Ta slovenski standard je istoveten z: prEN 1520
ICS:
91.100.30 Beton in betonski izdelki Concrete and concrete
products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2025
ICS 91.100.30 Will supersede EN 1520:2011
English Version
Precast lightweight concrete products with an open
structure
Produits préfabriqués en béton de granulats légers à Fertigteile aus haufwerksporigem Leichtbeton
structure ouverte
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 177.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1520:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 5
1 Scope . 6
2 Normative references . 6
3 Terms, definitions, symbols and abbreviations . 9
3.1 Terms and definitions . 9
3.2 Symbols . 10
3.2.1 General symbols . 10
3.2.2 Subscripts . 10
3.2.3 Symbols used in this document . 10
3.3 Abbreviations . 11
4 Characteristics . 11
4.1 Concrete . 11
4.1.1 Compressive strength lightweight concrete with an open structure . 11
4.1.2 Dry density lightweight concrete with an open structure . 11
4.1.3 Modulus of elasticity lightweight concrete with an open structure - testing . 11
4.1.4 Modulus of elasticity lightweight concrete with an open structure - calculation . 11
4.1.5 Drying shrinkage lightweight concrete with an open structure- testing . 11
4.1.6 Drying shrinkage lightweight concrete with an open structure – tabulated values . 11
4.1.7 Creep lightweight concrete with an open structure - testing . 11
4.1.8 Freeze–thaw resistance of concrete . 11
4.1.9 Corrosion protection . 12
4.2 Reinforcing steel . 12
4.2.1 Elongation at maximum load — reinforcing steel . 12
4.2.2 Elongation after fracture — reinforcing steel . 12
4.2.3 Stress ratio — reinforcing steel . 12
4.2.4 Tensile yield strength — reinforcing steel . 12
4.2.5 Ultimate tensile strength — reinforcing steel . 12
4.3 Mechanical performance. 12
4.3.1 Mechanical strength — testing — lightweight concrete with an open structure —
longitudinal load . 12
4.3.2 Mechanical strength — testing — lightweight concrete with an open structure —
rigidity of joints–in-plane-shear. 12
4.3.3 Mechanical strength — testing — lightweight concrete with an open structure —
rigidity of joints — out-of-plane-shear . 13
4.4 Fire performance . 13
4.4.1 Reaction to fire — class declaration . 13
4.4.2 Classification without further testing (WFT) . 13
4.4.3 Classification without testing (WT). 13
4.4.4 Resistance to fire . 13
4.5 Thermal performance . 14
4.5.1 Thermal transmittance lightweight concrete with an open structure — testing . 14
4.5.2 Thermal transmittance lightweight concrete with an open structure — tabulated
values . 14
4.6 Water performance . 15
4.6.1 Water vapour permeability — resistance factor — testing . 15
4.6.2 Water vapour permeability — resistance factor — tabulated values . 15
4.7 Acoustic performance . 15
4.7.1 Airborne sound insulation index — calculation. 15
4.7.2 Airborne sound insulation index — testing . 15
4.7.3 Impact sound insulation — calculation . 15
4.7.4 Impact sound insulation — testing . 15
4.7.5 Sound absorption coefficient building elements . 15
4.7.6 Sound absorption coefficient traffic elements . 16
4.8 Other performances . 16
4.8.1 Mass of the element . 16
4.9 Release of dangerous substances — indoor air . 16
4.10 Release of dangerous substances — soil and ground water . 16
4.11 Environmental sustainability . 18
4.11.1 Reference service life . 18
4.11.2 Life cycle assessment environmental characteristics . 18
4.11.3 Resource use environmental characteristics . 18
4.11.4 Waste environmental characteristics . 19
4.11.5 Output flows environmental characteristics . 19
4.11.6 Biogenic carbon content environmental characteristics . 20
4.12 Documents attached to the declaration of performances. 20
4.12.1 General . 20
4.12.2 Off-the-shelf products . 20
4.12.3 Custom made products . 20
5 Testing, assessment and sampling methods . 21
5.1 Lightweight concrete with an open structure . 21
5.1.1 Characteristic compressive strength lightweight concrete with an open structure . 21
5.1.2 Dry density lightweight concrete with an open structure . 24
5.1.3 Modulus of elasticity lightweight concrete with an open structure — testing . 24
5.1.4 Modulus of elasticity lightweight concrete with an open structure — calculation . 24
5.1.5 Drying shrinkage lightweight concrete with an open structure — testing . 24
5.1.6 Drying shrinkage lightweight concrete with an open structure — tabulated values . 25
5.1.7 Creep lightweight concrete with an open structure — testing . 25
5.1.8 Freeze–thaw resistance of concrete. 25
5.1.9 Corrosion protection . 25
5.2 Reinforcing steel . 25
5.2.1 Elongation at maximum load — reinforcing steel . 25
5.2.2 Elongation after fracture — reinforcing steel . 25
5.2.3 Stress ratio — reinforcing steel . 25
5.2.4 Tensile yield strength — reinforcing steel . 25
5.2.5 Ultimate tensile strength — reinforcing steel .
...
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