prEN 13892-9

SLOVENSKI STANDARD
01-junij-2024
Metode preskušanja mešanice za estrih - 9. del: Dimenzijska stabilnost
Methods of test for screed materials - Part 9: Dimensional stability
Prüfverfahren für Estrichmörtel und Estrichmassen - Teil 9: Dimensionsstabilität
Méthodes d'essai des matériaux pour chapes - Partie 9 : Stabilité dimensionnelle
Ta slovenski standard je istoveten z: prEN 13892-9
ICS:
91.100.10 Cement. Mavec. Apno. Malta Cement. Gypsum. Lime.
Mortar
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2024
ICS 91.100.10 Will supersede EN 13892-9:2018
English Version
Methods of test for screed materials - Part 9: Dimensional
stability
Méthodes d'essai des matériaux pour chapes - Partie 9 Prüfverfahren für Estrichmörtel und Estrichmassen -
: Stabilité dimensionnelle Teil 9: Dimensionsstabilität
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 303.
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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13892-9:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Symbols and abbreviated terms . 4
5 Principle . 4
6 Curling profile apparatus . 5
7 Procedure . 6
7.1 General. 6
7.2 Preparation of specimen . 6
7.3 Length change . 7
7.4 Evaluation of length change . 7
8 Test report . 8
Annex A (informative) Samples . 10

European foreword
This document (prEN 13892-9:2024) has been prepared by Technical Committee CEN/TC 303 “Floor
screeds and screed materials”, the secretariat of which is held by UNI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 13892-9:2018.
EN 13892-9:2018:
— a 30 min time interval has been introduced for monitoring length changes in 7.3;
— a minimum duration for the record of length variations has been added for cement-based and
calcium sulphate-based screeds in 7.3.
1 Scope
This document specifies a method for determining the dimensional stability (i.e. the shrinkage and
swelling) of cementitious screed, calcium sulphate screed, magnesite screed and synthetic resin screed
materials made in accordance with EN 13892-1.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 13454-2, Binders for floor screeds based on calcium sulphate - Part 2: Test methods
EN 13813, Screed material and floor screeds — Screed material — Properties and requirements
EN 13892-1, Methods of test for screed materials — Part 1: Sampling, making and curing specimens for
test
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
4 Symbols and abbreviated terms
DL dimensional stability (µm/m)
L horizontal length change (µm)
start of length change (µm)
Lstart
L local minimum in length change curve (µm)
min
L local maximum in length change curve (µm)
max
L end of length change (µm)
end
shrinkage (µm)
∆LL − L
max end
swelling (µm)
S LL−> 0
start end
M moisture content in percentage
m weight at beginning (g)
b
m weight after drying (g)
d
5 Principle
This test method measures the unrestrained linear movement, called dimensional stability (i.e.
shrinkage and swelling), of screed materials in a 1 000 mm curling profile apparatus. A special feature
of this test method is the earliest possible commencement of measurements.
∆=
=
Dimensional stability is measured on screed materials made in accordance with EN 13892-1.
Irrespective of the consistency of the screed material, monitoring of horizontal length change
commences directly after the mould is filled. When measurements of length reach a steady-state, the
monitoring process ends.
The apparatus monitors the change in length of the specimen over time.
In general, the shrinkage predominates the dimensional stability. In this case, the dimensional stability
is calculated by comparing the difference between the measured local maximum length and the
measured length at steady-state (end of length change), see Formula (1):
LL−
∆L
max end
DL (1)
1 m 1 m
If the swelling predominates the dimensional stability is calculated by comparing the difference
between the measured length at start (L ) and the measured length at steady-state (end of length
start
change), see Formula (2):
LL−
∆S
start end
DL (2)
1 m 1 m
6 Curling profile apparatus
The curling profile apparatus, shown in Figure 1, features a stainless steel, distortion-resistant mould
50 mm in depth and 100 mm in width with an effective specimen length of 1 000 mm.
At one end of the mould, the specimen is restrained horizontally
...