ISO 16311-3:2024
(Main)Maintenance and repair of concrete structures — Part 3: Design of repairs
Maintenance and repair of concrete structures — Part 3: Design of repairs
This document defines basic considerations and decision-making for the specification of repair remedies, and management strategies for reinforced and unreinforced concrete structures. This document covers only atmospherically exposed structures, and buried or submerged structures, if they can be accessed. This document specifies repair design principles, and strategies for defects and on-going deterioration including, but not limited to: a) mechanical actions, e.g. impact, overloading, movement caused by settlement, blast, vibration and seismic actions; b) chemical and biological actions from environments, e.g. sulfate attack, alkali-aggregate reaction; c) physical actions, e.g. freeze–thaw, thermal cracking, moisture movement, salt crystallization, fire, and erosion; d) reinforcement corrosion; e) original construction defects that remained unaddressed from the time of construction. The execution of maintenance and repairs is covered in ISO 16311-4.
Entretien et réparation des structures en béton — Partie 3: Conception des réparations
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ISO 16311-3
Second edition
Maintenance and repair of concrete
2024-03
structures —
Part 3:
Design of repairs
Entretien et réparation des structures en béton —
Partie 3: Conception des réparations
Reference number
ISO 16311-3:2024(en) © ISO 2024
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ISO 16311-3:2024(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO 2024 – All rights reserved
ii
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ISO 16311-3:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Minimum considerations before repair design . 2
4.1 General .2
4.2 Initial risk assessment .2
4.3 Assessment of defects and their causes .2
5 Strategies for maintenance and repair . 3
5.1 General .3
5.2 Options.4
5.3 Factors .4
5.3.1 General .4
5.3.2 Structural . .4
5.3.3 Risk assessment .4
5.3.4 Environmental . . .4
5.4 Choice of appropriate strategy .
...
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 16311-3
ISO/TC 71/SC 7
Maintenance and repair of concrete
Secretariat: KATS
structures —
Voting begins on:
2023-12-21
Part 3:
Voting terminates on:
Design of repairs
2024-02-15
Entretien et réparation des structures en béton —
Partie 3: Conception des réparations
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 SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 16311-3:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023
---------------------- Page: 1 ----------------------
ISO/FDIS 16311-3:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 16311-3
ISO/TC 71/SC 7
Maintenance and repair of concrete
Secretariat: KATS
structures —
Voting begins on:
Part 3:
Voting terminates on:
Design of repairs
Entretien et réparation des structures en béton —
Partie 3: Conception des réparations
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: +41 22 749 01 11
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: copyright@iso.org
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 16311-3:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
© ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023
---------------------- Page: 2 ----------------------
ISO/FDIS 16311-3:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Minimum considerations before repair design . 2
4.1 General . 2
4.2 Initial risk assessment . 2
4.3 Assessment of defects and their causes . 2
5 Strategies for maintenance and repair . 4
5.1 General . 4
5.2 Options.
...
ISO TC 71/SC 7
Date: 2023-05-26
ISO /FDIS 16311-3:2023
ISO /TC 71/SC 7/WG 2
Secretariat: KATS
Date: 2023-12-07
Maintenance and repair of concrete structures —
Part 3:
Design of repairs
Élément introductif — Élément central — Entretien et réparation des structures en béton —
Partie 3: TitreConception des réparations
FDIS stage
© ISO 2023 – All rights reserved
---------------------- Page: 1 ----------------------
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this
publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical,
including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can
be requested from either ISO at the address below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de la partieBlandonnet 8
---------------------- Page: 2 ----------------------
ISO/DIS FDIS 16311-3:2023(E)
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
E-mail: copyright@iso.org
Website: www.iso.org
Published in Switzerland
© ISO 2023 – All rights reserved
iii
© ISO 2023 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/DIS FDIS 16311-3:2023(E)
Contents Page
Foreword .vi i
Introduction . viii
Part 3: Design of repairs . 1
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Minimum considerations before repair design . 2
4.1 General . 2
4.2 Initial risk assessment . 2
4.3 Assessment of defects and their causes . 3
5 Strategies for maintenance and repair . 5
5.1 General . 5
5.2 Options . 5
5.3 Factors . 5
5.3.1 General . 5
5.3.2 Structural . 5
5.3.3 Risk assessment . 6
5.3.4 Environmental . 6
5.4 Choice of appropriate strategy . 6
6 Basis for the choice of specific repair design principles, strategies, remedies and methods . 6
6.1 General .
...
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