ISO/TS 16774-1:2017

Test methods for repair materials for water-leakage cracks in underground concrete structures — Part 1: Test method for thermal stability

ISO/TS 16774-1:2017 specifies a laboratory test method for evaluating the thermal stress resistance of water-leakage crack repair materials through permeability testing. The repair material injected into a test specimen with an artificial crack is thermally stressed under the applied temperature conditions outlined in different national testing parameters that reflect different environmental conditions. As such, the results are only intended to provide a comparative performance evaluation of the waterproofing repair materials between different products of the same type of repair material. ISO/TS 16774-1:2017 outlines general guidelines and procedures for the test method. Specific variables that control the quantifiable parameters of the testing are filled in using relevant national standardizations and/or testing parameters.

Méthodes d'essai pour matériaux de réparation pour fissures dues à l'eau dans les structures en béton — Partie 1: Méthode d'essai de la stabilité thermique

General Information

• Status: Published
• Publication Date: 21-May-2017
• ICS: 91.080.40 - Concrete structures
• Technical Committee: ISO/TC 71/SC 7 - Maintenance and repair of concrete structures
• Drafting Committee: ISO/TC 71/SC 7/WG 3 - Leakage due to Cracks
• Current Stage: 9092 - International Standard to be revised
• Completion Date: 26-Jul-2021

Standards Content (Sample)

TECHNICAL ISO/TS
SPECIFICATION 16774-1
First edition
2017-05
Test methods for repair materials for
water-leakage cracks in underground
concrete structures —
Part 1:
Test method for thermal stability
Méthodes d’essai pour matériaux de réparation pour fissures dues à
l’eau dans les structures en béton —
Partie 1: Méthode d’essai de la stabilité thermique
Reference number
ISO/TS 16774-1:2017(E)
©
ISO 2017

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ISO/TS 16774-1:2017(E)

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ISO/TS 16774-1:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus . 2
6 Preparation of the test specimen and artificial crack conditions .2
7 Procedure. 3
7.1 Thermal stress test . 3
7.2 Permeability test . 3
8 Presentation of results . 4
9 Test report . 4
9.1 Information on the repair material of the test target . 4
9.1.1 General. 4
9.1.2 Other information . 4
9.2 Information on the test . 4
Annex A (informative) Example test method . 6
Bibliography .17
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ISO/TS 16774-1:2017(E)

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
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
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO’s adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: w w w . i s o .org/ iso/ foreword .html
This document was prepared by ISO/TC 71, Concrete, reinforced concrete and pre-stressed concrete,
Subcommittee SC 7, Maintenance and repair of concrete structures.
A list of parts in the ISO 16774 series, published under the general title Test methods for repair materials
for water-leakage cracks in concrete structures, can be found on the ISO website.
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ISO/TS 16774-1:2017(E)

Introduction
ISO/TR 16475 outlines six basic properties and the required performance levels of water-leakage repair
materials, and ISO/TS 16774-1 through ISO/TS 16774-6 provide test methods designed to evaluate the
respective properties of these repair materials.
These test methods are intended to serve as references for nations that have not yet developed a test
method on the six proposed required performance properties of water leakage repair materials. If other
forms of test methods that are simpler, more accurate or more organized are available, such methods
are recommended for use instead.
Many of the dependent variables outlined in the ISO 16774 series of reference test methods are subject
to change in accordance with the environmental conditions (temperature; chemical substance and
concentration; relative humidity; width of movement activity; water pressure or water flow velocity,
etc.) outlined in the standards and testing parameters used in respective countries.
In ISO/TS 16774‑1, ISO/TS 16774‑5 and ISO/TS 16774‑6, for the purpose of objectively comparing the
performance of injected repair materials, artificial cracks of same volume were used to control the
usage of repair materials for each testing cycle and enable repetition of the same test methods under
the same conditions.
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TECHNICAL SPECIFICATION ISO/TS 16774-1:2017(E)
Test methods for repair materials for water-leakage cracks
in underground concrete structures —
Part 1:
Test method for thermal stability
1 Scope
This document specifies a laboratory test method for evaluating the thermal stress resistance of water‑
leakage crack repair materials through permeability testing.
The repair material injected into a test specimen with an artificial crack is thermally stressed under the
applied temperature conditions outlined in different national testing parameters that reflect different
environmental conditions. As such, the results are only intended to provide a comparative performance
evaluation of the waterproofing repair materials between different products of the same type of repair
material.
This document outlines general guidelines and procedures for the test method. Specific variables that
control the quantifiable parameters of the testing are filled in using relevant national standardizations
and/or testing parameters.
NOTE 1 This test method classifies and categorizes materials that are tested into families of similar properties
for the purpose of making relative comparisons with the data results.
NOTE 2 Each individual repair material can be further tested in an actual construction site application for a
complete assessment.
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.
ISO/TR 16475, Guidelines for repair of water-leakage cracks in concrete structures
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/TR 16475 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org .obp
3.1
repair material
material used for preventing the escape of water at cracks in concrete
EXAMPLE Injection type grouts, such as synthetic rubberized asphalt, mastic, urethane, poly‑urea, etc.
Note 1 to entry: In this document, target ingredients are limited to injection materials outlined in ISO/TR 16475.
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ISO/TS 16774-1:2017(E)

4 Principle
Resistance to physical change, loss, or disintegration due to thermal stress is one of the fundamental
properties that water leakage repair materials should possess. Repair material property changes due
to high or low temperature conditions, can potentially cause the repair material’s performance to
deteriorate. To evaluate the leakage crack repair material’s thermal stability performance, this test
method uses two separate procedures: 1) a thermal stress test method and 2) a permeability test method.
The test specimen with an artificial crack is injected with repair material, and the specimen goes
through thermal stress testing for a specified number of cycles, between hot and cold temperature
conditions. Test specimens with the repair materials are placed in temperature chambers where the
temperature is repeatedly changed from maximum to minimum temperature conditions for a period
of time (time and temperature variables are subject to change in accordance to different national test
parameters). To evaluate whether the repair material loses its waterproofing property due to thermal
stressing, the specimen goes through water permeability testing for the last stage of the test method.
5 Apparatus
5.1 Temperature chamber, which should be able to handle temperature precision values of 2 °C
ranging from (−20 ± 2) °C to (60 ± 2) °C and maintain a constant temperature in the interior of the
chamber apparatus. Apparatus should also be equipped with a compartment dryer and freezers with
temperature precision of ± 2 °C. The chamber should also be able to automatically alternate between
high and low temperature conditions.
NOTE Temperature condition values are subject to change in accordance with different national testing
parameters and requirements.
2
5.2 Air compressor, which should be able to handle minimum air pressure value of 0,1 N/mm to
2
0,3 N/mm .
5.3 Permeability test chamber, which should be able to handle minimum water pressure value of
2 2
0,1 N/mm to 0,3 N/mm (output method).
NOTE Conditions outlined in 5.2 and 5.3 are subject to change in accordance with different national testing
parameters and requirements.
6 Preparation of the test specimen and artificial crack conditions
1) Two separate concrete or mortar substrate parts should be cured to form a water-leakage crack
test specimen. The parts consist of upper and bottom parts, and they should be flat and cylindrical
in shape and made using concrete or mortar.
NOTE The mix proportion is (water: cement: fine aggregate = 1: 2: 6, mass ratio). The curing period for
the mortar or concrete substrate parts is approximately 72 hours, but subject to change in accordance to
different national testing parameters and requirements.
2) The bottom substrate is drilled with evenly spaced holes (Ø2,5 mm) near the centre of the substrate.
The pinholes shall be drilled all the way through from one surface of the substrate part to the other.
NOTE The purpose of these pinholes is to check for signs of leakage during repair material injection and
during permeability testing.
3) Spacers are placed on one surface of the bottom substrate part without covering the pinholes, and
the upper substrate part is placed on top of the spacers. The substrate parts, now having formed
the test specimen with the artificial crack, are held together with tape, silicone sealants or other
applicable materials along the exterior side. The spacer height represents the width of the crack
and can vary depending on the different national testing parameters and requirements.
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ISO/TS 16774-1:2017(E)

NOTE Any material can be used to hold the two substrate parts together with a crack space in between,
but they should leave an inlet in one side for material injection.
4) The injection space should be flushed out with water before injecting the repair material to remove
any debris as well as to verify that the interior mortar surface is sufficiently wet for repair material
injection. After making sure the substrate parts are held together tightly, place the test specimen
under water for a specified amount of time. After taking the specimen out of the water, inject the
repair material into the specimen.
The injection method varies according to different national testing parameters and requirements.
If manufacturer’s instructions are available, this method is recommended instead. If debris and
other substances are present they should be removed prior to material application.
NOTE For detailed and clearer explanation, refer to Annex A.
7 Procedure
7.1 Thermal stress test
1) Once the test specimen have been injected with the repair materials and taken out of the water
after the specified duration, place the test specimens in the temperature chamber.
2) Run the thermal stress testing.
NOTE Thermal stress testing will consist of alternating the interior temperature of the testing chamber
between low and high temperature for a set number of cycles within a set period of time. Temperature range,
duration, and number of cycles are subject to change in accordance to different national testing parameters
and requir
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