Refractory mortars — Part 7: Determination of permanent change in dimensions on heating

This document describes the method for determining the permanent change in dimensions on heating (drying and/or firing) of refractory mortars.

Mortiers réfractaires — Partie 7: Détermination des variations dimensionnelles permanentes lors du chauffage

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Status
Published
Publication Date
26-Sep-2021
Current Stage
6060 - International Standard published
Start Date
27-Sep-2021
Completion Date
27-Sep-2021
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INTERNATIONAL ISO
STANDARD 13765-7
First edition
2021-09
Refractory mortars —
Part 7:
Determination of permanent change
in dimensions on heating
Mortiers réfractaires —
Partie 7: Détermination des variations dimensionnelles permanentes
lors du chauffage
Reference number
ISO 13765-7:2021(E)
ISO 2021
---------------------- Page: 1 ----------------------
ISO 13765-7:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

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
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 13765-7:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle ........................................................................................................................................................................................................................ 1

5 Apparatus ..................................................................................................................................................................................................................... 1

6 Test preparation ................................................................................................................................................................................................... 2

6.1 Sampling ....................................................................................................................................................................................................... 2

6.2 Preparation of the refractory bricks ..................................................................................................................................... 2

7 Procedure..................................................................................................................................................................................................................... 3

7.1 Preparation of the test specimens .......................................................................................................................................... 3

7.2 Measurement of test specimens .............................................................................................................................................. 4

7.3 Drying the test specimens ............................................................................................................................................................. 4

7.4 Firing the test specimens ............................................................................................................................................................... 4

7.5 Measurement of test specimens after heating (drying or firing) ................................................................ 5

8 Calculations................................................................................................................................................................................................................ 5

8.1 The permanent change in dimensions on drying ..................................................................................................... 5

8.2 The permanent change in dimensions on firing ........................................................................................................ 5

8.3 The permanent change in dimensions on heating ................................................................................................... 5

9 Precision ....................................................................................................................................................................................................................... 6

9.1 Interlaboratory tests .......................................................................................................................................................................... 6

9.2 Repeatability ............................................................................................................................................................................................. 6

9.3 Reproducibility ....................................................................................................................................................................................... 6

10 Reporting ...................................................................................................................................................................................................................... 6

Annex A (informative) Results of interlaboratory tests.................................................................................................................... 7

© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 13765-7:2021(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 of 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 www .iso .org/

iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 33, Refractories.
A list of all parts in the ISO 13765 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 13765-7:2021(E)
Refractory mortars —
Part 7:
Determination of permanent change in dimensions on
heating
1 Scope

This document describes the method for determining the permanent change in dimensions on heating

(drying and/or firing) of refractory mortars.
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 8656-1, Refractory products — Sampling of raw materials and unshaped products — Part 1: Sampling

scheme

ISO 13765-1, Refractory mortars — Part 1: Determination of consistency using the penetrating cone

method

ISO 13765-2, Refractory mortars — Part 2: Determination of consistency using the reciprocating flow

table method
ISO 13765-3, Refractory mortars — Part 3: Determination of joint stability
3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminology 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 Principle

A mortar sample is heated and the dimensional change after heating is determined. Place the test

specimens of refractory mortars, whose length between two marks has been determined, in a drying

oven or furnace. Heat (drying and/or firing) to a specified temperature for a specified time and then

cool to room temperature. Measure the length between two marks again. Calculate the permanent

change in dimensions on heating.
5 Apparatus
5.1 Mixer, as specified in ISO 13765-1 or ISO 13765-2.

5.2 Balance, with a maximum weighing capacity of 10 kg and capable of weighing to the nearest 1 g.

© ISO 2021 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO 13765-7:2021(E)
5.3 Cutting device, a trowel.
5.4 Nylon filter cloth, single layer nylon mesh filter cloth, 80 mesh~200 mesh.

5.5 Electrical drying oven, fitted with a temperature controller and capable of operating at

110 °C ± 5 °C.

5.6 Furnace, the maximum temperature for the furnace should not lower than 1 600 °C. And the

temperature difference shall not exceed ±10 °C in the furnace.
5.7 Refractory powders, the particle size shall less than 0,1 mm.

5.8 Refractory bricks, (114 ± 1) mm × (65 ± 1) mm × (32 ± 1) mm, which should be the same as the

...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 13765-7
ISO/TC 33
Refractory mortars —
Secretariat: BSI
Voting begins on:
Part 7:
2021-06-15
Determination of permanent change
Voting terminates on:
in dimensions on heating
2021-08-10
Mortiers réfractaires —
Partie 7: Détermination des variations dimensionnelles permanentes
lors du chauffage
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 13765-7:2021(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 2021
---------------------- Page: 1 ----------------------
ISO/FDIS 13765-7:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

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
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/FDIS 13765-7:2021(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle ........................................................................................................................................................................................................................ 1

5 Apparatus ..................................................................................................................................................................................................................... 1

6 Test preparation ................................................................................................................................................................................................... 2

6.1 Sampling ....................................................................................................................................................................................................... 2

6.2 Preparation of the refractory bricks ..................................................................................................................................... 2

7 Procedure..................................................................................................................................................................................................................... 3

7.1 Preparation of the test specimens .......................................................................................................................................... 3

7.2 Measurement of test specimens .............................................................................................................................................. 4

7.3 Drying the test specimens ............................................................................................................................................................. 4

7.4 Firing the test specimens ............................................................................................................................................................... 4

7.5 Measurement of test specimens after heating (drying or firing) ................................................................ 5

8 Calculations................................................................................................................................................................................................................ 5

8.1 The permanent change in dimensions on drying ..................................................................................................... 5

8.2 The permanent change in dimensions on firing ........................................................................................................ 5

8.3 The permanent change in dimensions on heating ................................................................................................... 5

9 Precision ....................................................................................................................................................................................................................... 6

9.1 Interlaboratory tests .......................................................................................................................................................................... 6

9.2 Repeatability ............................................................................................................................................................................................. 6

9.3 Reproducibility ....................................................................................................................................................................................... 6

10 Reporting ...................................................................................................................................................................................................................... 6

Annex A (informative) Results of interlaboratory tests.................................................................................................................... 7

© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/FDIS 13765-7:2021(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 of 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 www .iso .org/

iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 33, Refractories.
A list of all parts in the ISO 13765 series can be found on the ISO website.

Any feedback or questions on this document should be directed to the user’s national standards body. A

complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 13765-7:2021(E)
Refractory mortars —
Part 7:
Determination of permanent change in dimensions on
heating
1 Scope

This document describes the method for determining the permanent change in dimensions on heating

(drying and/or firing) of refractory mortars.
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 8656-1, Refractory products — Sampling of raw materials and unshaped products — Part 1: Sampling

scheme

ISO 13765-1, Refractory mortars — Part 1: Determination of consistency using the penetrating cone

method

ISO 13765-2, Refractory mortars — Part 2: Determination of consistency using the reciprocating flow

table method
ISO 13765-3, Refractory mortars — Part 3: Determination of joint stability
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 Principle

A mortar sample is heated and the dimensional change after heating is determined. Place the test

specimens of refractory mortars, whose length between two marks has been determined, in a drying

oven or furnace. Heat (drying and/or firing) to a specified temperature for a specified time and then

cool to room temperature. Measure the length between two marks again. Calculate the permanent

change in dimensions on heating.
5 Apparatus
5.1 Mixer, as specified in ISO 13765-1 or ISO 13765-2.

5.2 Balance, with a maximum weighing capacity of 10 kg and capable of weighing to the nearest 1 g.

© ISO 2021 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO/FDIS 13765-7:2021(E)
5.3 Cutting device, a trowel.
5.4 Nylon filter cloth, single layer nylon mesh filter cloth, 80 mesh~200 mesh.

5.5 Electrical drying oven, fitted with a temperature controller and capable of operating at

110 °C ± 5 °C.
5.6 Furnace, the maximum tempera
...

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