ISO 14448:2016

INTERNATIONAL ISO
STANDARD 14448
First edition
2016-10-15
Low modulus adhesives for exterior
tile finishing
Adhésifs à faible module d’élasticité pour le collage extérieur des
carreaux céramiques
Reference number
©
ISO 2016
© ISO 2016, Published in Switzerland
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ii © ISO 2016 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification and designation . 2
5 Requirement . 2
6 General test conditions and procedures . 3
6.1 Testing conditions . 3
6.2 Test materials . 3
6.2.1 General. 3
6.2.2 Cement mortar substrate . 4
6.2.3 Ceramic tiles . 4
6.2.4 Fibre cement flat sheets. 4
6.3 Notched trowel . 4
6.4 Pull head plate . 4
7 Test methods . 5
7.1 Shelf life . 5
7.2 Mixing homogeneity inspection . 5
7.3 Adhesive strength . 5
7.3.1 Materials for the testing . 5
7.3.2 Preparation of test pieces. 6
7.3.3 Curing of test assembly . 7
7.3.4 Treating of test assembly . 7
7.3.5 Adhesive strength . 8
7.4 Cured film test .12
7.4.1 Preparation of sample .12
7.4.2 Tensile test .13
7.5 Heat stability .15
7.5.1 Materials for the testing .15
7.5.2 Preparation of test pieces.15
7.6 Slip test .16
7.6.1 Materials for the testing .16
7.6.2 Preparation of test pieces and test procedure .17
7.7 Pot-life (2 component adhesives) .17
7.7.1 General.17
7.7.2 Apparatus .17
7.7.3 Procedure .18
7.8 Open time (1 component adhesives) .18
7.8.1 Materials for the testing .18
7.8.2 Preparation of test pieces and testing procedure .18
7.8.3 Determination of open time .19
7.9 Density .19
8 Nomenclature of product .19
9 Labeling .19
10 Handling precaution .19
Bibliography .20
Foreword
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electrotechnical standardization.
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described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
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The committee responsible for this document is ISO/TC 189, Ceramic tile.
iv © ISO 2016 – All rights reserved

INTERNATIONAL STANDARD ISO 14448:2016(E)
Low modulus adhesives for exterior tile finishing
1 Scope
This International Standard specifies a quality standard and test methods for a low modulus adhesive
composed of chemical reaction resins and used for the installation of tiles to exterior walls.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 37:2011, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties
ISO 188:2011, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests
ISO 679:2009, Cement — Test methods — Determination of strength
ISO 2811-1, Paints and varnishes — Determination of density — Part 1: Pycnometer method
ISO 6344-2, Coated abrasives — Grain size analysis — Part 2: Determination of grain size distribution of
macrogrits P12 to P220
ISO 8336, Fibre-cement flat sheets — Product specification and test methods
ISO 10364:2007, Structural adhesives — Determination of the pot life (working life) of multi-component
adhesives
ISO 13006, Ceramic tiles — Definitions, classification, characteristics and marking
ISO 21948, Coated abrasives — Plain sheets
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
pot-life
time interval during which the adhesive can be used after mixing
3.2
open time
maximum time interval after application at which tiles can be embedded in the applied adhesive and
meet the specified tensile adhesion strength requirement
3.3
shelf life
time of storage under stated conditions during which an adhesive may be expected to maintain its
working properties
3.4
slip
downward movement of a tile applied to a combed adhesive layer on a vertical surface
3.5
reaction resin adhesive
single- or multi-component mixture of synthetic resin, mineral fillers and organic additives in which
curing occurs by chemical reaction
3.6
notched trowel
toothed tool, which makes it possible to apply the adhesive as a series of ribs of a uniform thickness
onto the fixing surface and/or the reverse face of the tile
3.7
cohesive failure ratio
percentage of total cohesive failure area of adhesive, substrate or tile, over total adhesion area
3.8
low modulus adhesive
adhesives curing to elastomeric rubbery film which has minimum 35 % of elongation at tensile testing
break point
3.9
cement
finely ground inorganic material that, when mixed with water, forms a paste that sets by means of
hydration reactions and processes, and that, after hardening, retains its strength and stability,
...