EN 13888-2:2022

SLOVENSKI STANDARD
01-november-2022
Nadomešča:
SIST EN 12808-1:2009
SIST EN 12808-2:2009
SIST EN 12808-3:2009
SIST EN 12808-4:2009
SIST EN 12808-4:2009/AC:2011
SIST EN 12808-5:2009
Fugirne mase za keramične ploščice - 2. del: Preskusne metode
Grouts for ceramic tiles - Part 2: Test methods
Fugenmörtel für keramische Fliesen und Platten - Teil 2: Prüfverfahren
Mortiers de jointoiement pour carreaux et dalles céramiques - Partie 2 : Méthodes
d'essai
Ta slovenski standard je istoveten z: EN 13888-2:2022
ICS:
91.100.10 Cement. Mavec. Apno. Malta Cement. Gypsum. Lime.
Mortar
91.100.23 Keramične ploščice Ceramic tiles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13888-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2022
EUROPÄISCHE NORM
ICS 91.100.10 Supersedes EN 12808-1:2008, EN 12808-2:2008, EN
12808-3:2008, EN 12808-4:2009, EN 12808-5:2008
English Version
Grouts for ceramic tiles - Part 2: Test methods
Mortiers de jointoiement pour carreaux et dalles Fugenmörtel für keramische Fliesen und Platten - Teil
céramiques - Partie 2 : Méthodes d'essai 2: Prüfverfahren
This European Standard was approved by CEN on 8 August 2022.

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 CEN-CENELEC Management Centre 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 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13888-2:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Sampling . 4
5 Test conditions . 5
6 Test materials . 5
7 Mixing of grouts . 5
8 Test report . 6
9 Test methods . 6
9.1 Determination of flexural and compressive strength . 6
9.2 Determination of water absorption . 10
9.3 Determination of shrinkage . 12
9.4 Determination of resistance to abrasion . 16
9.5 Determination of chemical resistance . 20
Bibliography . 24

European foreword
This document (EN 13888-2:2022) has been prepared by Technical Committee CEN/TC 67 “Ceramic
tiles”, the secretariat of which is held by UNI.
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 March 2023, and conflicting national standards shall be
withdrawn at the latest by March 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 12808-1:2008, EN 12808-2:2008, EN 12808-3:2008, EN 12808-4:2009
and EN 12808-5:2008.
This document belongs to series EN 13888, Grouts for ceramic tiles, which consists of the following parts:
— Part 1: Requirements, classification, designation, marking and labelling;
— Part 2: Test methods.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: 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 the United
Kingdom.
1 Scope
This document specifies the methods for determining characteristics for grouts used in internal and
external installation of ceramic tiles.
This document does not contain performance requirements or recommendations for the design and
installation of ceramic tiles.
The following test methods are described:
— Determination of flexural and compressive strength (9.1);
— Determination of water absorption (9.2);
— Determination of shrinkage (9.3);
— Determination of resistance to abrasion (9.4);
— Determination of chemical resistance (9.5).
Grouts for ceramic tiles can also be used for other kinds of tiles (natural and agglomerated stones, etc.),
if they do not adversely affect the stones.
WARNING — This document can involve hazardous materials and operations. It is important that
persons using this document are familiar with normal laboratory practice. This document does not
purport to address all the safety problems, if any, associated with its use. It is the responsibility of the
user to establish appropriate safety and health practices and to ensure compliance with any European
and national regulatory conditions.
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 196-1:2016, Methods of testing cement - Part 1: Determination of strength
EN 1067, Adhesives - Examination and preparation of samples for testing
EN ISO 10545-6, Ceramic tiles - Part 6: Determination of resistance to deep abrasion for unglazed tiles
(ISO 10545-6)
EN ISO 15605, Adhesives - Sampling (ISO 15605)
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological 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 Sampling
Take at least 2 kg sample of the grout in accordance with EN ISO 15605 and EN 1067.
5 Test conditions
Standard conditions shall be (23 ± 2) °C and (50 ± 5) % relative humidity and the speed of air in the
testing area less than 0,2 m/s.
The tolerance in the time of conditioning for all test specimens shall be as shown in Table 1 below:
Table 1 — Allowed tolerance in testing time for all specimens requiring conditioning
Allowed tolerance tor
Specimen conditioning time
testing
6 h ±15 min
7 d ±3 h
14 d ±6 h
21 d ±9 h
28 d ±12 h
Testing shall be performed within the specified time window.
6 Test materials
Condition all test materials for at least 24 h under standard conditions.
The grout to be tested shall be within its shelf life, where this is specified.
7 Mixing of grouts
The amount of water and/or liquid admix required for preparing the cementitious grout shall be as stated
by the manufacturer in parts by weight, i.e. liquid to dry powder.
Prepare at least 2 kg of the grout in a mixer of the type described in EN 196-1:2016, 4.4, using the slow
speed settings, (140 ± 5) r/min rotation and (62 ± 5) r/min planetary movement.
Carry out the following procedure:
— pour the liquid into the pan;
— scatter the dry powder over the liquid;
— mix for 30 s;
— take out the mixing paddle;
— scrape down the paddle and pan within 1 min;
— put the paddle back in place and mix for 1 min.
Let the grout mature if and as specified in the manufacturer's instructions, and then mix for a further 15 s.
In the case of reaction resin grouts, follow the manufacturer's instructions.
8 Test report
The test report shall provide the following information:
a) number, title and issue of this document;
b) place and date of sampling;
c) type of grout, commercial designation and manufacturer name;
d) identification of the test sample;
e) handling and storage of samples before testing;
f) test conditions;
g) date of testing;
h) amount of water or liquid used for preparing the grout;
i) result of the visual inspection of the specimen before testing;
j) any other factor that could have influenced the result;
k) test results (individual and mean values and mode of failure where required):
1) flexural and compressive strength;
2) water absorption;
3) shrinkage
4) resistance to abrasion;
5) chemical resistance.
9 Test methods
9.1 Determination of flexural and compressive strength
9.1.1 Apparatus
9.1.1.1 Three gang mould shall consist of three horizontal compartments so that three prismatic
specimens 40 mm x 40 mm x 160 mm can be prepared simultaneously (see EN 196-1:2016, 4.5).
9.1.1.2 Jolting apparatus or jolting table used for the compaction of 40 mm x 40 mm x 160 mm grout
specimen, which shall comply with EN 196-1:2016, 4.6.
9.1.1.3 Flexural strength testing machine shall be capable of applying the load with suitable capacity and
sensitivity for the test. The machine shall be provided with a flexure device in accordance with
EN 196-1:2016, 4.7 (see Figure 1).
9.1.1.4 Compressive strength testing machine shall comply with EN 196-1:2016, 4.8. The test requires
the use of a jig (in accordance with EN 196-1:2016, 4.9) to be incorporated in the lower platen; the upper
platen receives the load from the machine through an intermediate spherical seating (see Figure 2).
9.1.2 Preparation of test specimens
Mould the specimens immediately after the preparation of the grout, with the mould firmly clamped to
the jolting table.
Introduce, using a suitable scoop, the first of two layers of grout into each of the compartments, directly
from the mixing bowl. Spread the layer uniformly, then compact using 60 jolts.
Introduce the second layer of grout, level and compact with a further 60 jolts.
Lift the mould gently from the jolting table, strike off excess of material and smooth the surface with a flat
trowel. Wipe off the grout left on the perimeter of the mould.
Cover the mould with a glass plate according to EN 196-1.
Place the mould, suitably identified, on a horizontal base in standard conditions, (23 ± 2) °C and
(50 ± 5) % R.H.
After 24 h carefully remove the specimen from the mould.
Keep the demoulded prism in standard conditions for 27 d, leaving a clearance of at least 25 mm on all
sides.
Prepare three specimens for each grout.
9.1.3 Flexural strength under standard conditions
After conditioning has been completed, place the prism in the testing machine (9.1.1.3) with one side face
on the supporting rollers and with the longitudinal axis normal to the support.
Apply the load vertically in accordance with the procedure described in EN 196-1:2016, 9.1.
Keep the prism halves in standard conditions until tested in compression.
9.1.4 Compressive strength under standard conditions
Test the prism halves broken in flexion, by means of the equipment specified in 9.1.1.4 and following the
procedure described in EN 196-1:2016, 9.2.
9.1.5 Flexural and compressive strength after freeze-thaw cycles
Prepare the test units in accordance with 9.1.2.
Condition the test units for 6 d in standard conditions and then immerse in water for 21 d before carrying
out 25 freeze-
...