1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 1927-4:2012Monolithic (unshaped) refractory productsPart 4: Determination of consistency of castablesBS EN ISO 1927-4:2012 BRITISH STANDARDNational forewordThis British
2、 Standard is the UK implementation of EN ISO 1927-4:2012. It supersedes BS EN 1402-4:2003, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee RPI/1, Refractory products and materials.A list of organizations represented on this committee can be obtained on
3、 request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012.ISBN 978 0 580 65759 7 ICS 81.080 Compliance with a Br
4、itish Standard cannot confer immunityfrom legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2013.Amendments issued since publicationDate Text affected EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1927-4
5、December 2012 ICS 81.080 Supersedes EN 1402-4:2003English Version Monolithic (unshaped) refractory products - Part 4: Determination of consistency of castables (ISO 1927-4:2012) Produits rfractaires monolithiques (non faonns) - Partie 4: Dtermination de la consistance des btons (ISO 1927-4:2012) Ung
6、eformte (monolithische) feuerfeste Erzeugnisse - Teil 4: Bestimmung der Konsistenz von Feuerbetonen (ISO 1927-4:2012) This European Standard was approved by CEN on 30 November 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving th
7、is European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official
8、versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Aust
9、ria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Swede
10、n, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Me
11、mbers. Ref. No. EN ISO 1927-4:2012: EBS EN ISO 1927-4:2012 EN ISO 1927-4:2012 (E) 3 Foreword This document (EN ISO 1927-4:2012) has been prepared by Technical Committee ISO/TC 33 “Refractories“ in collaboration with Technical Committee CEN/TC 187 “Refractory products and materials” the secretariat o
12、f which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2013, and conflicting national standards shall be withdrawn at the latest by June 2013. Attention is drawn to the possi
13、bility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 1402-4:2003. According to the CEN/CENELEC Internal Regulations, the national standard
14、s organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem
15、bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 1927-4:2012 has been approved by CEN as a EN ISO 1927-4:2012 without any modification. BS EN ISO 1927-4:2012ISO 1927-4:2012(
16、E) ISO 2012 All rights reserved iiiContents PageForeword iv1 Scope 12 Normative references . 13 Principle . 14 Apparatus 25 Procedure 45.1 Determination of the consistency of insulating castables for rodding and tamping . 45.2 Determination of the consistency of castables by tap flow table method .
17、55.3 Determination of the consistency of dense vibrating castables by cone vibration method 55.4 Determination of the consistency of self-flowing castables . 66 Test report . 7BS EN ISO 1927-4:2012ISO 1927-4:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide feder
18、ation 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 commit
19、tee. 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
20、 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 app
21、roval 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 1927-4 was prepared by Technical Commit
22、tee ISO/TC 33, Refractories.ISO 1927 consists of the following parts, under the general title Monolithic (unshaped) refractory products: Part 1: Introduction and classification Part 2: Sampling for testing Part 3: Characterization as received Part 4: Determination of consistency of castables Part 5:
23、 Preparation and treatment of test pieces Part 6: Measurement of physical properties Part 7: Tests on pre-formed shapes Part 8: Determination of complementary propertiesiv ISO 2012 All rights reservedBS EN ISO 1927-4:2012INTERNATIONAL STANDARD ISO 1927-4:2012(E)Monolithic (unshaped) refractory produ
24、cts Part 4: Determination of consistency of castables1 ScopeThis part of ISO 1927 describes methods for the determination and measurement of the consistency of dense and insulating castables as defined in ISO 1927-1. It is applicable to all types of dense regular castables, dense deflocculated casta
25、bles and insulating castables to determine the liquid addition necessary for preparing test pieces according to ISO 1927-5.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undate
26、d references, the latest edition of the referenced document (including any amendments) applies.ISO 1927-1, Monolithic (unshaped) refractory products Part 1: Introduction and classificationISO 1927-5:2012, Monolithic (unshaped) refractory products Part 5: Preparation and treatment of test pieces3 Pri
27、ncipleThe amount of water used in a castable mix for preparing test pieces has a significant influence on the test results. Excess water can reduce strength, increase shrinkage, and can cause sedimentation. Insufficient moisture can give voids due to poor compaction, with subsequent lower density an
28、d strength.This part of ISO 1927 describes three different methods for determining the consistency according to the type of material:a) determination of the consistency of insulating castables containing significant amounts of light-weight aggregates such as vermiculite or perlite which would be des
29、troyed by intensive mixing; such products are normally installed by pouring, rodding, tamping;b) determination of the consistency of all types of vibratable castables;c) determination of the consistency of self-flowing castables.To obtain reproducible results, the following factors are closely contr
30、olled: wet mixing time; batch size, which is chosen for the required number of determinations (e.g. if determination of working time is required), and is also related to mixer pan size or bowl; mixer pan size adapted to batch weight to have at least 50 % and a maximum of 75 % volume loading by the d
31、ry batch; temperature (of the water, castable and mix and ambient temperature), of 18 C to 22 C for consistency and working time determination; quantity of water addition used in the test which is rapidly affected when the dry volume loading of the mixer pan drops below 50 % of the total dry capacit
32、y, due to the increased metal surface to be wetted; ISO 2012 All rights reserved 1BS EN ISO 1927-4:2012ISO 1927-4:2012(E) water quality.4 Apparatus4.1 Mixer, conforming to the requirements of 4.2 of ISO 1927-5:2012.4.2 Vibrating table, conforming to the requirements of 4.3 of ISO 1927-5:2012.4.3 Tro
33、wel, conforming to the requirements of 4.7 of ISO 1927-5:2012.4.4 Metal moulds (see Figures 1 and 2), comprising two truncated cones, with a diameter of 100 mm at the bottom, and 70 mm at the top.One cone shall be 50 mm in height and the other shall be 80 mm in height.The moulds should preferably be
34、 made from stainless steel with chromium-plated inside surfaces.Dimensions in millimetresFigure 1 Cone 1, of height 50 mm2 ISO 2012 All rights reservedBS EN ISO 1927-4:2012ISO 1927-4:2012(E)Dimensions in millimetresFigure 2 Cone 2, of height 80 mm4.5 Metal bowl, suitable for manual mixing of a test
35、batch of correct size.NOTE For example a diameter of 450 mm and a depth of 150 mm is suitable for many products.4.6 Two balances, one capable of weighing up to 25 kg with an accuracy of 50 g, and the other capable of weighing up to 5 kg with an accuracy of 1 g.4.7 Stop-watch.4.8 Callipers.4.9 Thermo
36、meter, for measuring the temperature of the water, material and mix.4.10 Water, pure mains water of recognized drinking quality.4.11 Tapflow table, as shown in Figure 3, where the crank is rotated to give a circular movement to the turntable ands the cam lifts the turntable through 8 mm. ISO 2012 Al
37、l rights reserved 3BS EN ISO 1927-4:2012ISO 1927-4:2012(E)Dimensions in millimetres12Key1 3845g2 Course 8 mmFigure 3 The tap flow table5 Procedure5.1 Determination of the consistency of insulating castables for rodding and tamping5.1.1 Weigh sufficient material to ensure filling 50 % to 60 % of the
38、bowl volume of the dry sampled castable to the nearest 1 g and place it in the metal bowl (see 4.5) for manual mixing (see 5.2.1.2 of ISO 1927-5:2012) or low-intensity mechanical mixing (see 5.2.1.3 of ISO 1927-5:2012).Place a known mass of water, at least twice as great as that of the castable samp
39、le, in a separate container with a pouring lip. If the manufacturer recommends a minimum quantity of water to be added, use an initial water addition of 75 % of this quantity, again weighed to the nearest 1 g. Where no recommendation is given, add a quantity of water just sufficient to wet the casta
40、ble thoroughly, again weighed to the nearest 1 g. The temperature of the water and the castable shall be between 18 C and 22 C.5.1.2 Mix this water manually or in the low-intensity mixer with the castable until it is evenly dispersed. Make successive further small additions of water from a calibrate
41、d container, mixing with each addition until the mix begins to form a coherent mass. At this stage, reduce the water increments to a maximum of 1 % of the castable sample.5.1.3 After each of these additions, knock the bowl on a hard surface six times. A mix of the correct consistency should flow eas
42、ily and form a shiny wet surface. If necessary, add water until this consistency is reached. Weigh the remaining water in the container and calculate the water addition made to the castable as a percentage of the dry castable mass. Record this percentage.5.1.4 Leave the bowl for 5 min and again knoc
43、k it six times on a hard surface to check the consistency. If necessary, add small amounts of water to obtain the correct consistency, in which case the total amount of water added shall be reported. Do not allow the total time taken to achieve the correct consistency to exceed 20 min from the first
44、 addition of water.NOTE After the mix has been left in the bowl for 5 min it may be necessary to mix again, before making further water additions.5.1.5 Record the amount of water required for the correct consistency, expressed in litres of water per hundred kilogrammes (l/100 kg) of dry castable.4 I
45、SO 2012 All rights reservedBS EN ISO 1927-4:2012ISO 1927-4:2012(E)5.2 Determination of the consistency of castables by tap flow table method5.2.1 Weigh a sufficient quantity of the sampled castable to obtain at least 50 % (preferably 75 %) volume loading of the mixer pan by the dry batch. Place this
46、 weighed amount in the mixer pan (see 4.1).In the case of a multi-component material, weigh the equivalent amounts of each component and place them in the mixer pan. A separate dry mixing time of 1 min is necessary.5.2.2 Switch on the mixer, start the stop-watch (see 4.7) and add, within 30 s, the a
47、verage amount of water within the range recommended by the manufacturer.NOTE 1 The wet mixing time should not be less than 2 min nor exceed 8 min, depending on the product type or the time recommended by the manufacturer.NOTE 2 Generally, deflocculated castables require a longer mixing time than reg
48、ular castables and a wet mixing time of 4 min may be necessary to avoid overwatering.5.2.3 Position the lightly oiled tapered mould of suitable height (see 4.4), normally 50 mm, to the top surface of the flow table with its larger diameter (100 mm) facing downwards.NOTE The 80 mm cone should be used
49、 for castables with a maximum grain size greater than 6,3 mm5.2.4 Place the mixed castable in the mould so that it forms a small heap above the top surface or rim of the mould and strike off the surface level with the top of the mould within a maximum time of 30 s.5.2.5 Carefully lift off the mould from the table, leaving the castable in place.5.2.6 Action the tap flow table with the crank such that one tap is given to the table. Repeat 14 times, with one rotation per second.5.2.7 Measure the two diameters at righ
copyright@ 2008-2019 麦多课文库（www.mydoc123.com）网站版权所有
备案/许可证编号：苏ICP备17064731号-1