oSIST ISO/DIS 14824-2:2012
Grout for prestressing tendons - Part 2: Grouting procedures
Grout for prestressing tendons - Part 2: Grouting procedures
This part of ISO 14824 gives the procedures to be used for grouting of tendons in post-tensioned prestressed concrete. It is applicable to all types of structures, including bridges and buildings.
This part of ISO 14824 also covers suitability testing and inspection testing for grouts and their component materials used on a project.
Coulis pour câbles de précontrainte - Partie 2: Modes opératoires de gobetage
Injekcijska masa za prednapete kable - 2. del: Postopki injektiranja
General Information
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 14824-2
First edition
2012-10-01
Grout for prestressing tendons —
Part 2:
Grouting procedures
Coulis pour câbles de précontrainte —
Partie 2: Modes opératoires de gobetage
Reference number
ISO 14824-2:2012(E)
©
ISO 2012
---------------------- Page: 1 ----------------------
ISO 14824-2:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any
means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the
address below or ISO’s member body in the country of the requester.
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Published in Switzerland
ii © ISO 2012 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 14824-2:2012(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Documentation . 1
4.1 Execution specification . 1
4.2 Quality plan . 2
4.3 Execution documentation. 2
5 Materials . 2
6 Grout assessment . 3
6.1 Suitability testing . 3
6.2 Project specific grouting tests . 3
7 Equipment . 4
7.1 General . 4
7.2 Mixer . 4
7.3 Pump . 4
7.4 Hoses . 4
7.5 Inlet connections . 4
7.6 Stand-by and emergency equipment . 4
8 Grouting procedures . 5
8.1 Inlets, outlets and tendon anchorages . 5
8.2 Precautions before grouting . 5
8.3 Temperature at grouting . 5
8.4 Grouting operations . 6
8.5 Precautions after grouting . 6
9 Quality management . 6
9.1 General . 6
9.2 Personnel . 7
9.3 Inspection . 7
9.4 Conformity criteria .10
9.5 Action in the event of a non-conformity .10
Bibliography .12
© ISO 2012 – All rights reserved iii
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ISO 14824-2:2012(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International
Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies
casting a vote.
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.
ISO 14824-2 was prepared by Technical Committee ISO/TC 71, Concrete, reinforced concrete and pre-
stressed concrete, Subcommittee SC 3, Concrete production and execution of concrete structures.
ISO 14824 consists of the following parts, under the general title Grout for prestressing tendons:
— Part 1: Basic requirements
— Part 2: Grouting procedures
— Part 3: Test methods
iv © ISO 2012 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 14824-2:2012(E)
Introduction
In post-tensioned prestressed concrete construction, the grouting of tendons is an important operation.
The intention of this part of ISO 14824 is to provide a specification for grouting, compliance with which
will satisfy the requirements in ISO 22966.
The main function of grouting is to:
— protect the prestressing steel against corrosion;
— provide a bond between the prestressing steel and the ducts where required for the design of
the structure;
— allow the transfer of compressive stresses in the structure in a direction transverse to the
internal tendons;
— fill all voids where water may accumulate and cause frost damage.
The testing regimes anticipated by this part of ISO 14824 include three levels:
(1) initial type and audit testing in accordance with ISO 14824-1;
(2) suitability testing for confirmation of the selected grout for a specific project in accordance with
this part of ISO 14824;
(3) inspection during the production of grout on a specific project in accordance with this part
of ISO 14824.
The test methods for each of the regimes are given in ISO 14824-3.
In some countries requirements exist for independent third-party certification of grout and grouting
procedures which should be set out in national requirements to supplement ISO 22966.
Where the suitability of high viscosity grouts has been proven by full scale trials, any amendments
or alternatives to the procedures in this part of ISO 14824 need to be incorporated in the execution
specification (see 4.1). This also applies to certain special structures or tendon configurations which
require grouts with enhanced performance.
© ISO 2012 – All rights reserved v
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INTERNATIONAL STANDARD ISO 14824-2:2012(E)
Grout for prestressing tendons —
Part 2:
Grouting procedures
1 Scope
This part of ISO 14824 gives the procedures to be used for grouting of tendons in post-tensioned
prestressed concrete. It is applicable to all types of structures, including bridges and buildings.
This part of ISO 14824 also covers suitability testing and inspection testing for grouts and their
component materials used on a project.
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.
ISO 14824-1, Grout for prestressing tendons — Part 1: Basic requirements
ISO 14824-3, Grout for prestressing tendons — Part 3: Test methods
ISO 22966, Execution of concrete structures
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
grout
homogeneous mixture of cement and water, which may contain admixtures and additions
3.2
grouting
injection of grout into ducts in a continuous operation
3.3
tendon
assembly of prestressing steel and sheath with anchorages and all necessary auxiliary components to
permit grouting, either placed internally or externally to the concrete structure
3.4
specialist contractor
contractor or construction enterprise which carries out grouting of tendons
4 Documentation
4.1 Execution specification
Before starting any part of the grouting works, the execution specification relevant to that part of the
works shall be complete and available.
© ISO 2012 – All rights reserved 1
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ISO 14824-2:2012(E)
The following items shall be included in the execution specification:
— reference to this part of ISO 14824;
— reference to other relevant International or national standards;
— reference to international or national approvals for the post-tensioning kit;
— reference to other relevant national regulations and standards;
— information and requirements for the particular project prepared to supplement and qualify the
requirements of the above listed documents;
— drawings and other technical documents needed for the execution.
In addition, where relevant, procedures shall be established for:
— making alterations to previously agreed requirements;
— distribution, the filing and recording of technical documents used for the works.
4.2 Quality plan
If a quality control procedure for grouting works is required by the execution specification, it shall be
available at the site.
4.3 Execution documentation
The specialist contractor shall keep available on site written method statements covering materials,
equipment, grouting procedures and inspection all adapted to the extent and complexity of the project.
Provisions for the case of unusually low or high temperatures or delayed grouting, if likely to occur
during the project duration, shall be specified.
The specialist contractor shall have shop drawings showing the position and details of the inlets and
outlets, and the details of the sealing of the tendon anchorages.
The specialist contractor shall keep available on site documented records of:
— materials and grout used;
— initial type testing according to ISO 14824-1;
— suitability testing according to this part of ISO 14824;
— results of the project specific grouting tests, if specified.
The specialist contractor shall keep documented records of the conformity of the materials, equipment,
grout, grouting operations, and inspection with this standard and the execution specification according
to Table 2, Table 3 and Table 4. These records shall be kept for the duration required by national provisions.
Any eventual corrective actions taken shall also be recorded.
If special documentation beyond the requirements of this part of ISO 14824 is required for grouting
works, the type and extent of the documentation shall be stated in the execution specification.
5 Materials
The individual materials and the grout to be used shall comply with ISO 14824-1.
2 © ISO 2012 – All rights reserved
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ISO 14824-2:2012(E)
6 Grout assessment
6.1 Suitability testing
The suitability of the grout shall be assessed for each project sufficiently in advance of grouting
operations, to enable any necessary adjustments to be made in the use of the materials, equipment or
personnel. The extent of suitability testing and number of tests shall be in accordance with Table 1.
a
Table 1 — Extent of suitability testing
Test in accordance Suitability testing Number of tests
b
with ISO 14824-3
Sieve Yes 1 test
Fluidity 1 test immediately after mixing
Yes
2 tests 30 min after mixing
Inclined tube Only required if not already subject to 1 test if required
initial type testing with the same type of
mixer intended to be used on the project
c
Wick-induced bleed Yes 3 tests
c
Volume change Yes 3 tests
d
Compressive strength Yes 3 tests
Density Yes 1 test
a
Suitability testing may be waived for structures in Inspection Class 2 subject to there being satisfactory evidence from
previous similar projects of full compliance of the grout with the requirements of ISO 14824-1 and documented testing
during production in accordance with ISO 14824-1.
b
Other test methods may be used if the correlation or safe relationship between the results of these test methods and the
reference methods in ISO 14824-3 have been established.
c
Tests for bleeding and volume change are performed on the same sample.
d
The number of compressive tests may be reduced to one where there is documented evidence from previous projects of full
compliance of the grout with the requirements of ISO 14824-1.
The grout assessment shall consist of the preparation of the grout using the materials, equipment and
personnel proposed for the project, and testing in accordance with ISO 14824-3. The preparation of
the grout shall be carried out under the conditions expected on site for the project. The assessed grout
properties shall comply with ISO 14824-1. The range of acceptable temperatures specified for the
particular grout shall be compatible with the expected conditions of the project.
6.2 Project specific grouting tests
If required by the execution specification, project specific grouting tests on tendons in representative
forms of the project shall be performed. Such tests should be planned and carried out well in advance of
the site operations.
NOTE Such project specific grouting tests can be advisable, e.g. when tendon geometry and details are
specified on the project for which no prior experience for successful grouting is available. Experience has shown
that full-scale tests of grout and grouting procedures can be valuable to prove adequacy.
© ISO 2012 – All rights reserved 3
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ISO 14824-2:2012(E)
7 Equipment
7.1 General
Grouting equipment shall consist of a mixer and a pump with all the necessary connection hoses, valves,
measuring devices for water, cement, admixtures and additions, and testing equipment as required to
perform the grouting of the project.
The grouting equipment shall be such that the ducts can be filled without interruption and at the
anticipated speed.
Grouting equipment shall include a storage reservoir if required for continuous filling of the tendons on
the project. Su
...
SLOVENSKI STANDARD
oSIST ISO/DIS 14824-2:2012
01-junij-2012
Injekcijska masa za prednapete kable - 2. del: Postopki injektiranja
Grout for prestressing tendons - Part 2: Grouting procedures
Coulis pour câbles de précontrainte - Partie 2: Modes opératoires de gobetage
Ta slovenski standard je istoveten z: ISO/FDIS 14824-2
ICS:
91.100.30 Beton in betonski izdelki Concrete and concrete
products
oSIST ISO/DIS 14824-2:2012 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST ISO/DIS 14824-2:2012
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oSIST ISO/DIS 14824-2:2012
DRAFT INTERNATIONAL STANDARD ISO/DIS 14824-2
ISO/TC 71/SC 3 Secretariat: SN
Voting begins on Voting terminates on
2011-06-29 2011-11-29
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
Grout for prestressing tendons —
Part 2:
Grouting procedures
Coulis pour câbles de précontrainte —
Partie 2: Modes opératoires de gobetage
ICS 91.100.30
In accordance with the provisions of Council Resolution 15/1993 this document is circulated in
the English language only.
Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est
distribué en version anglaise seulement.
To expedite distribution, this document is circulated as received from the committee
secretariat. ISO Central Secretariat work of editing and text composition will be undertaken at
publication stage.
Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du
secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au
Secrétariat central de l'ISO au stade de publication.
THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE
REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.
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.
© International Organization for Standardization, 2011
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oSIST ISO/DIS 14824-2:2012
ISO/DIS 14824-2
Copyright notice
This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted
under the applicable laws of the user’s country, neither this ISO draft nor any extract from it may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
photocopying, recording or otherwise, without prior written permission being secured.
Requests for permission to reproduce should be addressed to either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.
ii © ISO 2011 – All rights reserved
---------------------- Page: 4 ----------------------
oSIST ISO/DIS 14824-2:2012
---------------------- Page: 5 ----------------------
oSIST ISO/DIS 14824-2:2012
ISO/CD 14824-2 (E)
Contents Page
Foreword� . 3
Introduction .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Documentation .5
4.1 Execution specification .5
4.2 Quality plan .6
4.3 Execution documentation .6
5 Materials .7
6 Grout assessment.7
6.1 Suitability testing .7
6.2 Project specific grouting tests .7
7 Equipment .8
7.1 General .8
7.2 Mixer .8
7.3 Pump .8
7.4 Hoses .8
7.5 Inlet connections .9
7.6 Stand-by and emergency equipment .9
8 Grouting procedures .9
8.1 Inlets, outlets and tendon anchorages .9
8.2 Precautions before grouting .9
8.3 Temperature at grouting . 10
8.4 Grouting operations . 10
8.5 Precautions after grouting . 11
9 Quality Management . 11
9.1 General . 11
9.2 Personnel . 11
9.3 Inspection . 11
9.4 Conformity criteria . 14
9.5 Action in the event of a non-conformity . 15
Bibliography . 16
2
DRAFT 2011
---------------------- Page: 6 ----------------------
oSIST ISO/DIS 14824-2:2012
ISO/CD 14824-2 (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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 14824-2 was prepared by Technical Committee ISO/TC 71, Concrete, Reinforced and Prestressed
Concrete, Subcommittee SC 3, Production of Concrete and Execution of Concrete Structures.
3
DRAFT 2011
---------------------- Page: 7 ----------------------
oSIST ISO/DIS 14824-2:2012
ISO/CD 14824-2 (E)
Introduction
In post-tensioned prestressed concrete construction, the grouting of tendons is an important operation. The
intention of this International Standard is to provide a specification for grouting, compliance with which will
satisfy the requirements in ISO 22966.
The main function of grouting is to
Provide protection to the prestressing steel against corrosion;
Provide a bond between the prestressing steel and the ducts where required for the design of the
structure;
Allow the transfer of compressive stresses in the structure in a direction transverse to the internal
tendons;
Fill all voids where water may accumulate and cause frost damage.
The testing regimes anticipated by this International Standard include three levels:
(1) Initial type and audit testing in accordance with ISO 14824-1;
(2) Suitability testing for confirmation of the selected grout for a specific project in accordance with ISO
14824-2;
(3) Inspection during the production of grout on a specific project in accordance with ISO 14824-2.
The test methods for each of the regimes are given in ISO 14824-3.
NOTE: In some countries requirements exist for Independent Third Party Certification of Grout and Grouting
procedures which should be set out in National Requirements to supplement ISO 22966 Execution of
Concrete Structures.
4
DRAFT 2011
---------------------- Page: 8 ----------------------
oSIST ISO/DIS 14824-2:2012
ISO/CD 14824-2 (E)
Grout for prestressing tendons —
Part 2:
Grouting procedures
1 Scope
This International Standard gives the procedures to be used for grouting of tendons in post-tensioned
prestressed concrete. It is applicable to all types of structures including bridges and buildings.
This standard also covers suitability testing and inspection testing for grouts and their component materials
used on a project.
NOTE: Certain special structures or tendon configurations may require grouts with enhanced performance
which may require amendment of some of the requirements of this standard.
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.
ISO 14824-1, Grout for prestressing tendons – Part 1: Basic requirements
ISO 14824-3, Grout for prestressing tendons – Part 3: Test methods
ISO 22966, Execution of concrete structures
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
grout
homogeneous mixture of cement and water, it may contain admixtures and additions
3.2
grouting
injection of grout into ducts in a continuous operation
3.3
tendon
assembly of prestressing steel and sheath with anchorages and all necessary auxiliary components to permit
grouting, either placed internally or externally to the concrete structure
3.4
specialist contractor
contractor or construction enterprise which carries out grouting of tendons
4 Documentation
4.1 Execution specification
Before starting any part of the grouting works, the execution specification relevant to that part of the works
shall be complete and available.
5
DRAFT 2011
---------------------- Page: 9 ----------------------
oSIST ISO/DIS 14824-2:2012
ISO/CD 14824-2 (E)
The following items shall be included in the execution specification:
reference to this International Standard;
reference to other relevant International or national standards;
reference to international or national approvals for the post-tensioning kit;
reference to other relevant national regulations and standards;
information and requirements for the particular project prepared to supplement and qualify the
requirements of the above listed documents;
drawings and other technical documents needed for the execution.
In addition where relevant, procedures shall be established for:
making alterations to previously agreed requirements;
distribution, the filing and recording of technical documents used for the works.
4.2 Quality plan
If a quality control procedure for grouting works is required by the execution specification, it shall be available
at the site.
4.3 Execution documentation
The specialist contractor shall keep available on site written method statements covering materials, equipment,
grouting procedures and inspection all adapted to the extent and complexity of the project. Provisions for the
case of unusually low or high temperatures or delayed grouting, if likely to occur during the project duration,
shall be specified.
The specialist contractor shall have shop drawings showing the position and details of the inlets and outlets,
and the details of the sealing of the tendon anchorages.
The specialist contractor shall keep available on site documented records of:
materials and grout used;
initial type testing according to ISO 14824-1;
suitability testing according to this International Standard;
results of the project specific grouting tests, if specified.
The specialist contractor shall keep documented records of the conformity of the materials, equipment, grout,
grouting operations, and inspection with this standard and the execution specification according to Table 2,
Table 3 and Table 4. These records shall be kept for the duration, as required by national provisions.
Any eventual corrective actions taken shall also be recorded.
If special documentation beyond the requirements of this International standard is required for grouting works,
the type and extent of the documentation shall be stated in the execution specification.
6
DRAFT 2011
---------------------- Page: 10 ----------------------
oSIST ISO/DIS 14824-2:2012
ISO/CD 14824-2 (E)
5 Materials
The individual materials and the grout to be used shall comply with ISO 14824-1.
6 Grout assessment
6.1 Suitability testing
The suitability of the grout shall be assessed for each project sufficiently in advance of grouting operations, to
enable any necessary adjustments to be made in the use of the materials, equipment or personnel. The extent
of suitability testing and number of tests shall be in accordance with Table 1.
3)
Table 1 – Extent of suitability testing
Test in accordance Suitability testing Number of tests
2)
with ISO 14824-3
Sieve 1 test
Fluidity 1 test immediately after mixing
2 tests 30 min after mixing
Inclined tube Only required if not already subject to initial type 1 test if required
testing with the same type of mixer intended to be
used on the project
1)
Wick-induced bleed 3 tests
1)
Volume change 3 tests
4)
Compressive strength 3 tests
Density 1 test
1)
Tests for bleeding and volume change are performed on the same sample.
2)
Other test methods may be used if the correlation or safe relationship between the results of these test methods and
the reference methods in ISO 14824-3 have been established.
3)
Suitability testing may be waived for structures in Inspection Class 2 subject to there being satisfactory evidence from
previous similar projects of full compliance of the grout with the requirements of ISO 14824-1 and documented testing
during production in accordance with ISO 14824-1.
4)
The number of Compressive tests may be reduced to 1 where there is documented evidence from previous projects of
full compliance of the grout with the requirements of ISO14824-1.
The grout assessment shall consist of the preparation of the grout using the materials, equipment and
personnel proposed for the project, and testing in accordance with ISO 14824-3. The preparation of the grout
shall be carried out under the conditions expected on site for the project. The assessed grout properties shall
comply with ISO 14824-1. The range of acceptable temperatures specified for the particular grout shall be
compatible with the expected conditions of the project.
6.2 Project specific grouting tests
If required by the execution specification, project specific grouting tests on tendons in representative forms of
the project shall be performed.
7
DRAFT 2011
---------------------- Page: 11 ----------------------
oSIST ISO/DIS 14824-2:2012
ISO/CD 14824-2 (E)
NOTE Such tests should be planned and carried out well in advance of the site operations. Such project specific
grouting tests may be advisable, e.g. when tendon geometry and details are specified on the project for which no prior
experience for successful grouting is available. Experience has shown that full-scale tests of grout and grouting
procedures can be valuable to prove adequacy.
7 Equipment
7.1 General
Grouting equipment shall consist of a mixer and a pump with all the necessary connection hoses, valves,
measuring device
...
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