DIN EN ISO 1927-4-2013 Monolithic (unshaped) refractory products - Part 4 Determination of consistency of castables (ISO 1927-4 2012) German version EN ISO 1927-4 2012《整体(粗制)耐火材料产品.pdf

1、March 2013Translation by DIN-Sprachendienst.English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 8

2、1.080!$1)“1961406www.din.deDDIN EN ISO 1927-4Monolithic (unshaped) refractory products Part 4: Determination of consistency of castables (ISO 1927-4:2012);English version EN ISO 1927-4:2012,English translation of DIN EN ISO 1927-4:2013-03Ungeformte (monolithische) feuerfeste Erzeugnisse Teil 4: Best

3、immung der Konsistenz von Feuerbetonen (ISO 1927-4:2012);Englische Fassung EN ISO 1927-4:2012,Englische bersetzung von DIN EN ISO 1927-4:2013-03Produits rfractaires monolithiques (non faonns) Partie 4: Dtermination de la consistance des btons (ISO 1927-4:2012);Version anglaise EN ISO 1927-4:2012,Tra

4、duction anglaise de DIN EN ISO 1927-4:2013-03SupersedesDIN EN 1402-4:2004-01www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 13 pages02.13 DIN EN ISO 1927-4:2013-03 2 A comma is used as the decimal marker. National foreword ISO 1927-2 ha

5、s been prepared by Technical Committee ISO/TC 33 “Refractories” and has been taken over as EN ISO 1927-4 by Technical Committee CEN/TC 187 “Refractory products and materials” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Materialp

6、rfung (Materials Testing Standards Committee), Working Committee NA 062-02-57 AA Ungeformte, dichte geformte und wrmedmmende feuerfeste Erzeugnisse und Werkstoffe. DIN EN ISO 1927 consists of the following parts, under the general title Monolithic (unshaped) refractory products: Part 1: Introduction

7、 and classification Part 2: Sampling for testing Part 3: Characterization as received Part 4: Determination of consistency of castables Part 5: Preparation and treatment of test pieces Part 6: Measurement of physical properties Part 7: Tests on pre-formed shapes Part 8: Determination of complementar

8、y properties The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1927-1 DIN EN ISO 1927-1 ISO 1927-5 DIN EN ISO 1927-5 Amendments This standard differs from DIN EN 1402-4:2004-01 as follows: a) the content of EN ISO 1927-4 (based on EN 1402

9、-4) has been adopted in full; b) references to EN Standards have been replaced by references to the relevant ISO Standards and have been updated; c) Subclause 5.2 “Determination of the consistency of castables by tap flow table method” has been added. Previous editions DIN V ENV 1402-4: 1999-05 DIN

10、EN 1402-4: 2004-01 National Annex NA (informative) Bibliography DIN EN ISO 1927-1, Monolithic (unshaped) refractory products Part 1: Introduction and classification DIN EN ISO 1927 5, Unshaped refractory products Part 5: Preparation and treatment of test pieces EUROPEAN STANDARD NORME EUROPENNE EURO

11、PISCHE NORM EN ISO 1927-4 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) - Ungeformte (monolithische) feuerfeste Erzeugni

12、sse -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 this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographic

13、al 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 versions (English, French, German). A version in any other language made by translation under the responsibility

14、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 Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of M

15、acedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All righ

16、ts of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1927-4:2012: EEUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNGPartie 4: Dtermination de la consistance des btons(ISO 1927-4:2012) Teil 4: B

17、estimmung der Konsistenz von Feuerbetonen(ISO 1927-4:2012) Contents Page Foreword . 3 1 Scope . 4 2 Normative references. 4 3 Principle 4 4 Apparatus 5 5 Procedure 7 5.1 Determination of the consistency of insulating castables for rodding and tamping . 7 5.2 Determination of the consistency of casta

18、bles by tap flow table method . 8 5.3 Determination of the consistency of dense vibrating castables by cone vibration method 8 5.4 Determination of the consistency of self-flowing castables . 9 6 Test report . 10 2DIN EN ISO 1927-4:2013-03 EN ISO 1927-4:2012 (E) Foreword This document (EN ISO 1927-4

19、: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 of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of a

20、n 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 possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held

21、 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 standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croat

22、ia, 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, Sweden, Switzerland, Turkey and th

23、e 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. “ ”3DIN EN ISO 1927-4:2013-03 EN ISO 1927-4:2012 (E) 1 ScopeThis part of ISO 1927 describes methods for the determination and measurement of the consistency of

24、dense and insulating castables as defined in ISO 1927-1. It is applicable to all types of dense regular castables, dense deflocculated castables and insulating castables to determine the liquid addition necessary for preparing test pieces according to ISO 1927-5.2 Normative referencesThe following r

25、eferenced 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 1927-1, Monolithic (unshaped) refractory products Part 1: Int

26、roduction and classificationISO 1927-5:2012, Monolithic (unshaped) refractory products Part 5: Preparation and treatment of test pieces3 PrincipleThe 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, in

27、crease shrinkage, and can cause sedimentation. Insufficient moisture can give voids due to poor compaction, with subsequent lower density and strength.This part of ISO 1927 describes three different methods for determining the consistency according to the type of material:a) determination of the con

28、sistency of insulating castables containing significant amounts of light-weight aggregates such as vermiculite or perlite which would be destroyed by intensive mixing; such products are normally installed by pouring, rodding, tamping;b) determination of the consistency of all types of vibratable cas

29、tables;c) determination of the consistency of self-flowing castables.To obtain reproducible results, the following factors are closely controlled: 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 r

30、elated 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 dry 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 wate

31、r 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 capacity, due to the increased metal surface to be wetted; water quality.4DIN EN ISO 1927-4:2013-03 EN ISO 1927-4:2012 (E) 4 Apparatus4.1 Mixer, conforming to the requ

32、irements 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 Trowel, 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 7

33、0 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 made from stainless steel with chromium-plated inside surfaces.Dimensions in millimetresFigure 1 Cone 1, of height 50 mm5DIN EN ISO 1927-4:2013-03 EN ISO 1927-4:2012 (E) Dimension

34、s in millimetresFigure 2 Cone 2, of height 80 mm4.5 Metal bowl, suitable for manual mixing of a test 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

35、 other capable of weighing up to 5 kg with an accuracy of 1 g.4.7 Stop-watch.4.8 Callipers.4.9 Thermometer, 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

36、 give a circular movement to the turntable ands the cam lifts the turntable through 8 mm.6DIN EN ISO 1927-4:2013-03 EN ISO 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

37、and tamping5.1.1 Weigh sufficient material to ensure filling 50 % to 60 % of the 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).

38、Place a known mass of water, at least twice as great as that of the castable sample, 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

39、recommendation is given, add a quantity of water just sufficient to wet the castable 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 ev

40、enly dispersed. Make successive further small additions of water from a calibrated 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 b

41、owl on a hard surface six times. A mix of the correct consistency should flow easily 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 ca

42、stable mass. Record this percentage.5.1.4 Leave the bowl for 5 min and again knock 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 to

43、tal time taken to achieve the correct consistency to exceed 20 min from the first 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, ex

44、pressed in litres of water per hundred kilogrammes (l/100 kg) of dry castable.7DIN EN ISO 1927-4:2013-03 EN ISO 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 %

45、) volume loading of the mixer pan by the dry batch. Place this 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 mix

46、er, start the stop-watch (see 4.7) and add, within 30 s, the average 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,

47、 deflocculated castables require a longer mixing time than regular 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 diamete

48、r (100 mm) facing downwards.NOTE The 80 mm cone should be used 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 wit

49、hin 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 right angles d1and d2of the flattened sample using callipers and calculate the slump value Svas:Sv = (d1+ d2)2Record the mean value of both measurements to the nearest mi