SIST EN 13279-1:2005

SLOVENSKI STANDARD
SIST EN 13279-1:2005
01-september-2005
0DYþQDYH]LYDLQPDYþQLQRWUDQMLRPHWLGHO'HILQLFLMHLQ]DKWHYH
Gypsum binders and gypsum plasters - Part 1: Definitions and requirements
Gipsbinder und Gips-Trockenmörtel - Teil 1: Begriffe und Anforderungen
Plâtres et enduits a base de plâtre pour le bâtiment - Partie 1: Définitions et prescriptions
Ta slovenski standard je istoveten z: EN 13279-1:2005
ICS:
91.100.10 Cement. Mavec. Apno. Malta Cement. Gypsum. Lime.
Mortar
SIST EN 13279-1:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN 13279-1:2005

---------------------- Page: 2 ----------------------

SIST EN 13279-1:2005
EUROPEAN STANDARD
EN 13279-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2005
ICS 01.040.91; 91.100.10
English version
Gypsum binders and gypsum plasters - Part 1: Definitions and
requirements
Plâtres et enduits à base de plâtre pour le bâtiment - Partie Gipsbinder und Gips-Trockenmörtel - Teil 1: Begriffe und
1: Définitions et spécifications Anforderungen
This European Standard was approved by CEN on 20 October 2004.
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. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13279-1:2005: E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN 13279-1:2005
EN 13279-1:2005 (E)
Contents
page
Foreword .3
Introduction.4
1 Scope .5
2 Normative references .5
3 Terms and definitions.6
4 Types of gypsum binders and gypsum plasters .7
5 Requirements .8
6 Evaluation of conformity .12
7 Designation of gypsum binders and gypsum plasters .14
8 Marking, labelling and packaging.14
Annex ZA (informative)  Clauses of this European Standard addressing essential requirements or
other provisions of EU Directives.15
Bibliography.20

2

---------------------- Page: 4 ----------------------

SIST EN 13279-1:2005
EN 13279-1:2005 (E)
Foreword
This document (EN 13279-1:2005) has been prepared by Technical Committee CEN/TC 241 “Gypsum and gypsum
based products”, the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an identical text or
by endorsement, at the latest by December 2005, and conflicting national standards shall be withdrawn at the latest
by March 2007.
This document has been prepared under a mandate given to CEN by the European Commission and the European
Free Trade Association, and supports essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.
No existing European Standard is superseded.
This European Standard on gypsum binders and gypsum plasters consists of two parts:
 Part 1: Definitions and requirements
 Part 2: Test methods
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
3

---------------------- Page: 5 ----------------------

SIST EN 13279-1:2005
EN 13279-1:2005 (E)
Introduction
Diagram 1 shows the family of gypsum binders and gypsum plasters.

Raw gypsum
Gypsum binders :
- for further powder products ;
- for direct use on site ;
- for further processing e.g. ;
- blocks ;
- plasterboards ;
- ceiling elements ;
- etc.
Gypsum plaster (B1 Gypsum plaster for Other dry powder products e.g.:
to B7) special purposes - jointing ;
(plaster for fibrous - adhesives ;
plasterwork, plaster - compounds ;
for bricklaying, - etc.
acoustic plaster,
thermal insulation
plaster, fire protection
plaster and thin coat
plaster) (C1 to C6)
Covered in this European Standard
Not covered in this European Standard

Diagram 1 — Family of gypsum binders and gypsum plasters
4

---------------------- Page: 6 ----------------------

SIST EN 13279-1:2005
EN 13279-1:2005 (E)
1 Scope
This European Standard specifies the characteristics and performance of powder products based on gypsum
binder for building purposes. This includes premixed gypsum building plasters for plastering of walls and ceilings
inside buildings where they are applied as a finishing material which can be decorated. These products are
specially formulated to meet their application requirements by the use of additives/admixtures, aggregates and
other binders. Gypsum and gypsum based building plasters for manual and mechanical applications are included.
This European Standard also applies to gypsum binders both for direct use on site and for further processing into
gypsum blocks, gypsum plasterboards, gypsum fibrous plasterwork and gypsum ceiling elements. Gypsum plaster
for bricklaying is also included.
Calcium sulfate used as binder for floor screeds is not covered by this standard.
This European Standard defines the reference tests for technical characteristics and provides for the evaluation of
conformity of the products covered by this European Standard.
Building lime, as calcium hydroxide, can be used as an additional binder together with gypsum binder. If gypsum
binder is the principle active binding component in a plaster then this plaster is covered by this standard. If building
lime is the principle active binding component in a plaster then the plaster is covered by EN 998-1.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references,
only the edition cited applies. For undated references, the latest edition of the referenced document (including any
amendments) applies.
EN 12664, Thermal performance of building materials and products — Determination of thermal resistance by
means of guarded hot plate and heat flow meter methods — Dry and moist products of low and medium thermal
resistance.
EN 13279-2:2003, Gypsum binders and gypsum plasters — Part 2: Test methods.
EN 13501-1, Fire classification of construction products and building elements — Part 1: Classification using data
from reaction to fire tests.
EN 13501-2, Fire classification of construction products and building elements — Part 2: Classification using data
from the resistance tests, excluding ventilation services.
EN ISO 140-3, Acoustics — Measurement of sound insulation in buildings and of building elements — Part 3:
Laboratory measurements of airborne sound insulation of building elements (ISO 140-3:1995).
EN ISO 354, Acoustics — Measurement of sound absorption in a reverberation room (ISO 354:2003).
EN ISO 717-1, Acoustics — Rating and sound insulation in buildings and of building elements — Part 1: Airborne
sound insulation (ISO 717-1:1996).
EN ISO 6946:1996, Building components and building elements — Thermal resistance and thermal transmittance
— Calculation method (ISO 6946:1996).
EN ISO 9001:2000, Quality management systems — Requirements (ISO 9001:2000).
EN ISO 10456, Building materials and products — Procedures for determining declared and design thermal values
(ISO 10456:1999).
ISO 3049, Gypsum plasters — Determination of physical properties of powder.
5

---------------------- Page: 7 ----------------------

SIST EN 13279-1:2005
EN 13279-1:2005 (E)
3 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply.
3.1
gypsum binder
gypsum binder may be obtained by calcination of calcium sulfate dihydrate (CaSO4 . 2H2O) and consists of
calcium sulfate in its various hydration phases, for example hemihydrate (CaSO4 . 0,5 H2O) and anhydrite
(CaSO4). When mixed with water, gypsum binder is used to hold solid particles together in a coherent mass by a
setting process
3.2
gypsum plaster
“gypsum plaster” (premixed gypsum plaster) is used as a generic term to include all kinds of gypsum building
plaster, gypsum based building plaster and gypsum-lime building plaster used in buildings
3.3
gypsum building plaster
gypsum plaster consisting of at least 50 % calcium sulfate as the principle active binding component and not more
than 5 % lime (calcium hydroxide). Additives and aggregates may be added by the manufacturer
3.4
gypsum based building plaster
gypsum plaster consisting of less than 50 % calcium sulfate as the principle active binding component and not
more than 5 % lime (calcium hydroxide). Additives and aggregates may be added by the manufacturer
3.5
gypsum-lime plaster
gypsum building plaster according to 3.3 or gypsum based building plaster according to 3.4 with more than 5 %
lime (calcium hydroxide). Additives and aggregates may be added by the manufacturer
3.6
lightweight gypsum building plaster
lightweight gypsum building plasters are gypsum plasters in accordance with 3.3, 3.4 and 3.5 that incorporate
either lightweight inorganic aggregates, such as expanded perlite or vermiculite, or lightweight organic aggregates.
Additives and aggregates may be added by the manufacturer
3.7
gypsum building plaster for plasterwork with enhanced surface hardness
gypsum plaster specially formulated to satisfy requirements for plasterwork with enhanced surface hardness
3.8
gypsum plaster for fibrous plasterwork
specially manufactured plaster for production and assembly of fibrous gypsum casts
3.9
gypsum plaster for bricklaying
gypsum plaster used for bricklaying in non load bearing walls, partitions and ceilings
3.10
gypsum acoustic plaster
specially manufactured plaster for sound absorption purposes
3.11
gypsum thermal insulation plaster
specially manufactured plaster for thermal insulation purposes
3.12
gypsum fire protection plaster
specially manufactured plaster for fire exposed situations
6

---------------------- Page: 8 ----------------------

SIST EN 13279-1:2005
EN 13279-1:2005 (E)
3.13
gypsum thin coat plaster
specially manufactured plaster usually applied to thicknesses of 3 mm to 6 mm
3.14
additives and admixtures
materials (not aggregates or binders), such as fillers, fibres, pigments, building lime (< 5 %), retarders, air
entraining, water retaining and plasticizing agents added to gypsum plaster to improve its properties or to achieve
particular properties
3.15
aggregates
natural, synthetic or recycled materials suitable for use in buildings, e.g. lightweight aggregates such as perlite or
vermiculite or aggregates such as siliceous sand or calcareous crushed stone sand
3.16
lightweight aggregates
3
aggregates with a bulk density lower than 800 kg/m .
3.17
manual gypsum plaster
gypsum plaster formulated for manual application, batch mixed with water and applied manually to the background
NOTE Some plasters are mixed to form a paste, others are mixed to form a fluid consistency.
3.18
projection gypsum plaster
gypsum plaster formulated for mechanical application, mixed with water to the required consistency and applied by
projection machine to the background
3.19
one coat plaster system
gypsum plaster applied in one coat which fulfils all the functions of an undercoat and a final coat
3.20
multi-coat plaster system
plaster system requiring at least two layers of plaster
3.21
undercoat
lower plaster layer(s) of a plastering system which needs a final coat
3.22
final coat
upper (last) layer in a multi-coat plastering system
4 Types of gypsum binders and gypsum plasters
The designation of the gypsum binders and gypsum plasters shall be in accordance with Table 1.
7

---------------------- Page: 9 ----------------------

SIST EN 13279-1:2005
EN 13279-1:2005 (E)
Table 1 — Types of gypsum binders and gypsum plasters
Designation Notation
Gypsum binders e.g.: A
 gypsum binders for direct use or further processing (dry powder products);
−
 gypsum binders for direct use on site;
−
 gypsum binders for further processing (e.g. for gypsum blocks, gypsum
−
plasterboards, gypsum ceiling elements).
Gypsum plaster: B
 gypsum building plaster;
B1
 gypsum based building plaster;
B2
 gypsum-lime building plaster;
B3
 lightweight gypsum building plaster;
B4
 lightweight gypsum based building plaster;
B5
 lightweight gypsum-lime building plaster;
B6
 gypsum plaster for plasterwork with enhanced surface hardness.
B7
Gypsum plaster for special purposes: C
 gypsum plaster for fibrous plasterwork;
C1
 gypsum plaster for bricklaying;
C2
 acoustic plaster;
C3
 thermal insulation plaster;
C4
 fire protection plaster;
C5
 thin coat plaster.
C6
5 Requirements
5.1 Requirements linked to the end use conditions
5.1.1 Reaction to fire
Gypsum binders and gypsum plasters are classified in Class A1 (no contribution to fire) without testing when they
contain less than 1 % by weight or volume (whichever is the more onerous) of organic material.
If the products contain 1 % or more by weight or volume of organic material, they shall be tested and then classified
in accordance with EN 13501-1.
If the determination of organic material is by volume, the method of determination of non-compacted bulk density
given in ISO 3049 shall be used.
5.1.2 Fire resistance
NOTE Fire resistance is a characteristic dependent on an assembled system and not of the product in isolation.
In end use conditions, gypsum and gypsum based building plasters provide specific levels of fire resistance. Where
relevant, they shall be tested and then classified in accordance with EN 13501-2.
8

---------------------- Page: 10 ----------------------

SIST EN 13279-1:2005
EN 13279-1:2005 (E)
5.1.3 Acoustic performance
5.1.3.1 Direct airborne sound insulation
NOTE Direct airborne sound insulation is a characteristic dependent on an assembled system and not of the product in
isolation.
When required, the direct airborne sound insulation of an installed system including gypsum plaster and/or binder
shall be determined according to EN ISO 140-3 and EN ISO 717-1 as appropriate.
5.1.3.2 Acoustic absorption
NOTE Acoustic absorption is a characteristic dependent on an assembled system and not of the product in isolation.
When required, the manufacturer shall declare the sound absorption performance in the end-use condition as
tested according to EN ISO 354.
5.1.4 Thermal resistance
When required, the thermal resistance of the assembled system of gypsum binders and gypsum plasters in the end
use condition shall be calculated using the equation given in 6.1 of EN ISO 6946:1996.
The design values of thermal conductivity required for this calculation may be used as given Table 2.
For gypsum plasters and gypsum binders where the quantity of aggregates is sufficient to cause a significant
deviation from the values given in Table 2, the thermal conductivity shall be determined according to EN 12664.
Table 2 — Design values of thermal conductivity of hardened gypsum binders and gypsum plasters
Density Thermal conductivity
at 23 °C and 50 % of
3
kg/m
relative humidity
W/(m·K)
600 0,18
700 0,22
800 0,26
900 0,30
1 000 0,34
1 100 0,39
1 200 0,43
1 300 0,47
1 400 0,51
1 500 0,56
The values given in Table 2 are taken from EN 12524. The reference values concern dry material used inside.
When the material is wet, these values shall be adjusted using EN ISO 10456.
5.1.5 Dangerous substances
Materials used in products shall not release any dangerous substances in excess of the maximum permitted levels
specified in a relevant European Standard for the material or permitted in the national regulations of the member
state of destination.
9

---------------------- Page: 11 ----------------------

SIST EN 13279-1:2005
EN 13279-1:2005 (E)
5.2 Requirements for gypsum binders
Calcium sulfate content shall be at least 50 %. The properties of gypsum binders shall be determined in
accordance with EN 13279-2.
NOTE Other agreements may be defined in a specific contract between producer and user.
5.3 Requirements for gypsum plasters
The properties of gypsum plasters when determined in accordance with EN 13279-2, shall conform to the values
given in Table 3.
Table 3 — Requirements for gypsum plasters
Gypsum Gypsum Initial setting time Flexural Compressive Surface Adhesive strength
plasters binder strength strength hardness
min N/mm²
2 2 2
content
N/mm N/mm N/mm
%
manual projection
gypsum gypsum
plaster plaster
B1
>50
Fracture occurs
B2 <50
within the
a
B3
background or the
gypsum plaster,
B4 > 20 > 50 ≥ 1,0 ≥ 2,0 −
>50
when fracture
occurs in interface
B5 <50
gypsum/background
a
B6
the value shall be
≥ 0,1
B7
>50 ≥ 2,0 ≥ 6,0 ≥ 2,5
a
According to 3.3, 3.4, 3.5 and 3.6
5.4 Requirements for gypsum plasters for special purposes
The properties of gypsum plasters for special purposes when determined in accordance with EN 13279-2, shall
conform to the values given in Table 4.
10

---------------------- Page: 12 ----------------------

SIST EN 13279-1:2005
EN 13279-1:2005 (E)
Table 4 — Requirements for gypsum plasters for special purposes
Gypsum plaster Fineness Initial setting Flexural Compressive Surface hardness
CaSO
4
2
time strength strength
N/mm
binder
2 2
min
N/mm N/mm
%
d e d e
5 000 µm 1 500 µm 200 µm 100 µm Vicat Knife
2h 7d 2h 7d
C1 Fibrous > 50 0 0 < 1 % < 10 % - > 8 > 1,5 > 3,0 - > 4,0 > 10
plaster
works
C2 Bricklaying > 50 0 - - - > 30 - - - > 2,0 - -
plaster
C3 Acoustic - - - - - > 20 - - - - - -
a
plaster
C4 Thermal - - - - - > 20 - - - - - -
insulation
b
...