Refractory test-piece preparation — Gunning refractory panels by wet gunning techniques

ISO 18886:2016 specifies the procedures for the preparation of test pieces from refractory materials by wet gunning at ambient temperatures. The test pieces are for the determination of properties on wet-gunned products prepared under either "standard conditions" (as required for quality assurance or product development) or "site conditions". In the case of "site conditions", the purpose of the testing is to establish the properties pertaining to a given installation or a given set of installation conditions. In this case, the gunned panel is obtained during the on-site installation. Such parameters as activator addition (type, amount, method of addition), conveying pressure and curing conditions (temperature, orientation of the panel) applying during the preparation of the panel are as near as possible to the same parameters pertaining to the site installation. This procedure applies to refractory materials that can be transported through a gunning hose after having been mixed with the total water requirement for material placement. The consistency of these materials (see 7.5) is typically such that they would be suitable for placement by casting were they not to be transported through the gunning hose and applied by spraying. Refractory materials that are pneumatically conveyed in the "dry" state through a gunning hose, even after mixing with a portion of the total water requirement (the bulk of the water being added at the nozzle) are dealt with in ISO 20182. ISO 18886:2016 does not apply to the gunning of plastic refractory materials (refer to ISO 1927‑1).

Préparation d'éprouvettes réfractaires — Panneaux réfractaires pour gunitage par techniques de gunitage humide

General Information

Status
Published
Publication Date
07-Apr-2016
Technical Committee
Drafting Committee
Current Stage
9093 - International Standard confirmed
Start Date
06-Sep-2021
Completion Date
06-Sep-2021
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INTERNATIONAL ISO
STANDARD 18886
First edition
2016-04-15
Refractory test-piece preparation —
Gunning refractory panels by wet
gunning techniques
Préparation d’éprouvettes réfractaires — Panneaux réfractaires pour
gunitage par techniques de gunitage humide
Reference number
ISO 18886:2016(E)
ISO 2016
---------------------- Page: 1 ----------------------
ISO 18886:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland

All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 18886:2016(E)
Contents Page

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

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

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

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

4 Apparatus ..................................................................................................................................................................................................................... 2

5 Sampling ........................................................................................................................................................................................................................ 2

6 Preparation of test pieces ........................................................................................................................................................................... 3

6.1 Principle ........................................................................................................................................................................................................ 3

6.2 Equipment ................................................................................................................................................................................................... 3

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

8 Calculation .................................................................................................................................................................................................................. 5

9 Test report ................................................................................................................................................................................................................... 5

Bibliography ................................................................................................................................................................................................................................ 7

© ISO 2016 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 18886:2016(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 meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical

Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 33, Refractories.
iv © ISO 2016 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 18886:2016(E)
Refractory test-piece preparation — Gunning refractory
panels by wet gunning techniques
1 Scope

This International Standard specifies the procedures for the preparation of test pieces from refractory

materials by wet gunning at ambient temperatures. The test pieces are for the determination of

properties on wet-gunned products prepared under either “standard conditions” (as required for

quality assurance or product development) or “site conditions”. In the case of “site conditions”, the

purpose of the testing is to establish the properties pertaining to a given installation or a given set of

installation conditions. In this case, the gunned panel is obtained during the on-site installation. Such

parameters as activator addition (type, amount, method of addition), conveying pressure and curing

conditions (temperature, orientation of the panel) applying during the preparation of the panel are as

near as possible to the same parameters pertaining to the site installation.

This procedure applies to refractory materials that can be transported through a gunning hose after

having been mixed with the total water requirement for material placement. The consistency of these

materials (see 7.5) is typically such that they would be suitable for placement by casting were they not

to be transported through the gunning hose and applied by spraying.

Refractory materials that are pneumatically conveyed in the “dry” state through a gunning hose, even

after mixing with a portion of the total water requirement (the bulk of the water being added at the

nozzle) are dealt with in ISO 20182.

This International Standard does not apply to the gunning of plastic refractory materials (refer to

ISO 1927-1).
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 836, Terminology for refractories

ISO 1927-4, Monolithic (unshaped) refractory products — Part 4: Determination of consistency of castables

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 836 and the following apply.

3.1
activator

chemical solution added to the refractory at, or prior to, the gunning nozzle which causes the refractory

to set, stiffen or coagulate

Note 1 to entry: This International Standard may involve the use of hazardous materials, operations and

equipment. It does not attempt to address the safety problems associated with its use. It is the responsibility of

the user of this International Standard to establish appropriate safety and health practices and to determine the

applicability of regulatory limitations prior to use.
© ISO 2016 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO 18886:2016(E)
4 Apparatus

4.1 Gunned-material mould. The preferred mould for preparing samples of wet-gunned material is

enclosed on five sides as shown in Figure 1 a). An alternative mould is shown in Figure 1 b). In either case,

the surface being sprayed onto shall be square in shape and the mould shall have minimum dimensions

of (300 × 300 × 100) mm. The mould may be made from metal or timber, or a combination of both. It

should be of sufficient rigidity that it will not flex when material is sprayed onto it.

Interested parties shall agree on the size and type of mould to be used and these shall be stated in the

test report, along with the dimensions of the test panel produced.

A stainless steel expanded metal case, having the same mould dimensions as above, may be used by

agreement between interested parties. This type of mould is particularly useful during site installation

because it can be fitted to the anchoring, enabling the mould to be filled without undue disruption to

the gunning process.

4.2 Air pressure gauge, capable of measuring pressures up to 690 kPa ± 5 % at all pressures.

4.3 Weighing scale, capable of weighing masses of the order of 500 g to 0,1 g.

4.4 Drying oven, having fan-forced ventilation and capable of maintaining a temperature of

110 °C ± 5 °C.
4.5 Miscellaneous tools, e.g. trowel, shovel.

4.6 Thermometer, capable of measuring temperature within a suitable range (typically from −10 °C

to 90 °C) with a readability of 1 °C and an accuracy of ±1 °C.
Dimensions in millimetres
a) Preferred mould (enclosed on five sides) b) Alternative mould
Figure 1 — Examples of moulds used in wet gunning
5 Sampling

The sample for preparation of a test panel should be prepared in accordance with established sampling

principles, such as those given in ISO 1927-2.
2 © ISO 2016 – All rights reserved
---------------------- Page: 6 ----------------------
ISO 18886:2016(E)
6 Preparation of test pieces
6.1 Principle

Refractory material is mixed with the total water requirement and transported to a nozzle by suitable

means where air may be incorporated to convey the mix to the mould. Activator may also be added at

or prior to the nozzle to allow the mix to adhere to the target surface without slumping. Figure 2 shows

one example of an equipment set up for wet gunning.
6.2 Equipment

6.2.1 Conveying equipment, for conveying the material through the gunning hose to the gun nozzle.

Examples include double piston pumps, gunning machines that use pneumatic conveying, centrifugal

pumps and auger screws. The conveying equipment needs to have sufficient power to propel high-

density pre-mixed monolithic (unshaped) refractory materials through pipes and/or conveying hoses of

suitable diameter, over the required distance from the mixer to the surface b
...

DRAFT INTERNATIONAL STANDARD
ISO/DIS 18886
ISO/TC 33 Secretariat: BSI
Voting begins on: Voting terminates on:
2015-08-17 2015-11-17
Refractory test-piece preparation — Gunning refractory
panels by wet gunning techniques

Préparation d’éprouvettes réfractaires — Panneaux réfractaires pour gunitage par techniques de

gunitage humide
ICS: 81.080
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
Reference number
NATIONAL REGULATIONS.
ISO/DIS 18886:2015(E)
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. ISO 2015
---------------------- Page: 1 ----------------------
ISO/DIS 18886:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland

All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/DIS 18886
Contents Page

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

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

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

3 Terms and definitions ........................................................................................................................... 2

4 Apparatus ............................................................................................................................................... 2

5 Sampling................................................................................................................................................. 3

6 Preparation of test pieces..................................................................................................................... 3

6.1 Principle.................................................................................................................................................. 3

6.2 Equipment .............................................................................................................................................. 3

7 Procedure ............................................................................................................................................... 4

8 Calculation ............................................................................................................................................. 6

9 Test report .............................................................................................................................................. 6

© ISO 2014 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/DIS 18886
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 18886 was prepared by Technical Committee ISO/TC 33, Refractories, Subcommittee SC , .

iv © ISO 2014 – All rights reserved
---------------------- Page: 4 ----------------------
DRAFT INTERNATIONAL STANDARD ISO/DIS 18886
Refractory test-piece preparation – Gunning refractory panels
by wet gunning techniques — — —
1 Scope

This Standard specifies the procedures for the preparation of test pieces from refractory materials by wet

gunning at ambient temperatures. The test pieces are for the determination of properties on wet-gunned

products prepared under either “standard conditions” (as required for quality assurance or product

development) or “site conditions”. In the case of “site conditions”, the purpose of the testing is to establish the

properties pertaining to a given installation or a given set of installation conditions. In this case, the gunned

panel shall be obtained during the on-site installation. Such parameters as activator addition (type, amount,

method of addition), conveying pressure and curing conditions (temperature, orientation of the panel) applying

during the preparation of the panel shall be as near as possible to the same parameters pertaining to the site

installation.

This procedure applies to refractory materials that can be transported through a gunning hose after having

been mixed with the total water requirement for material placement. The consistency of these materials (see

section 7.5) is typically such that they would be suitable for placement by casting were they not to be

transported through the gunning hose and applied by spraying.

Refractory materials that are pneumatically conveyed in the “dry” state through a gunning hose, even after

mixing with a portion of the total water requirement (the bulk of the water being added at the nozzle) are dealt

with in ISO 20182:2008.

This Standard does not apply to the gunning of plastic refractory materials (Refer: ISO 1927-1).

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 836 Refractories - Vocabulary
ISO 1927-1 Monolithic (unshaped) refractory products – Part 1: Introduction
and classification
ISO 1927-2 Monolithic (unshaped) refractory products – Sampling for testing
ISO 1927-4 Monolithic (unshaped) refractory products – Determination of
consistency of castables
ISO 20182 Sample Preparation by dry gunning
© ISO 2014 – All rights reserved
---------------------- Page: 5 ----------------------
ISO/DIS 18886
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 836 apply, together with the

following.
3.1
activator

a chemical solution added to the refractory at, or prior to, the gunning nozzle which causes the refractory to

set, stiffen or coagulate

Warning: This International Standard may involve the use of hazardous materials, operations and

equipment. It does not attempt to address the safety problems associated with its use. It is the

responsibility of the user of this International Standard to establish appropriate safety and health

practices and to determine the applicability of regulatory limitations prior to use.

4 Apparatus

4.1 Gunned-material mould. The preferred mould for preparing samples of wet-gunned material is

enclosed on five sides as shown in Figure 1 a) below. An alternative mould is shown in Figure 1 b). In either

case, the surface being sprayed onto shall be square in shape and the mould shall have minimum dimensions

of (300 x 300 x 100) mm. The mould may be made from metal or timber, or a combination of both. It should be

of sufficient rigidity that it will not flex when material is sprayed onto it.

Interested parties shall agree on the size and type of mould to be used and these shall be stated in the

test report, along with the dimensions of the test panel produced.

NOTE A stainless steel expanded metal case, having the same mould dimensions as above, may be used by

agreement between interested parties. This type of mould is particularly useful during site installation because it can be

fitted to the anchoring, enabling the mould to be filled without undue disruption to the gunning process.

4.2 Air pressure gauge, capable of measuring pressures up to 690 kPa plus or minus 5 % at all

pressures.
4.3 Weighing scale, capable of weighing masses of the order of 500 g to 0.1 g.

4.4 Drying oven, having fan-forced ventilation and capable of maintaining a temperature of 110 °C ± 5 °C.

4.5 Miscellaneous tools, e.g. trowel, shovel.

4.6 Thermometer, capable of measuring temperature within a suitable range (typically from -10 ⁰C to 90

⁰C) with a readability of 1 C° and an accuracy of ± 1 ⁰C.
© ISO 2014 – All rights reserved
---------------------- Page: 6 ----------------------
ISO/DIS 18886
Dimensions are in millimetres
(a) Preferred mould (enclosed on five sides) (b) Alternative mould
Figure 1 — Examples of moulds used in wet gunning
5 Sampling

The sample for preparation of a test panel should be prepared in accordance with established sampling

principles, such as those given in ISO 1927-2.
6 Preparation of test pieces
6.1 Principle

Refractory material is mixed with the total water requirement and transported to a nozzle by suitable means

where air may be incorporated to convey the mix to the mould. Activator may also be added at or prior to the

nozzle to allow the mix to adhere to the target surface without slumping. Figure 2 shows one example of an

equipment set up for wet gunning.
6.2 Equipment

6.2.1 Conveying equipment. For conveying the material through the gunning hose to the gun nozzle.

Examples include double piston pumps, gunning machines that use pneumatic conveying, centrifugal pumps

and auger screws. The conveying equipment must have sufficient power to propel high density pre-mixed

monolithic (unshaped) refractor
...

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