1、May 2012 Translation by DIN-Sprachendienst.English price group 7No 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 91.
2、100.15!$|=:“1892623www.din.deDDIN EN 1744-7Tests for chemical properties of aggregates Part 7: Determination of loss of ignition of Municipal Incinerator BottomAsh Aggregate (MIBA Aggregate)English translation of DIN EN 1744-7:2012-05Prfverfahren fr chemische Eigenschaften von Gesteinskrnungen Teil
3、7: Bestimmung des Glhverlustes von Hausmllverbrennungsasche (HMV-Asche)Englische bersetzung von DIN EN 1744-7:2012-05Essais pour dterminer les caractristiques chimiques des granulats Partie 7: Dtermination de la perte au feu des mchefers dincinration dorduresmnagres (MIOM)Traduction anglaise de DIN
4、EN 1744-7:2012-05www.beuth.deDocument comprises 9 pagesIn case of doubt, the German-language original shall be considered authoritative.04.12 DIN EN 1744-7:2012-05 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 154 “Aggregates
5、” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-03-13 AA Gemeinschaftsarbeits-ausschuss NMP/FGSV: Gesteinskrnungen; Prfverfahren, Petrographie, Probe
6、nahme und Przision. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1744-7 February 2012 ICS 91.100.15 English Version Tests for chemical properties of aggregates - Part 7: Determination of loss of ignition of Municipal Incinerator Bottom Ash Aggregate (MIBA Aggregate) Essais pour dterminer les
7、 caractristiques chimiques des granulats - Partie 7: Dtermination de la perte au feu des mchefers dincinration dordures mnagres (MIOM) Prfverfahren fr chemische Eigenschaften von Gesteinskrnungen - Teil 7: Bestimmung des Glhverlustesvon Hausmllverbrennungsasche (HMV-Asche) This European Standard was
8、 approved by CEN on 7 January 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 bibliographical references concerning such nat
9、ional 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 of a CEN member into its own lang
10、uage 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Lat
11、via, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-10
12、00 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1744-7:2012: EEN 1744-7:2012 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 45 Apparatus .56 Sampling and prepar
13、ation of test specimens .57 Procedure .68 Calculation and expression of results .69 Test report 7DIN EN 1744-7:2012-05 EN 1744-7:2012 (E) 3 Foreword This document (EN 1744-7:2012) has been prepared by Technical Committee CEN/TC 154 “Aggregates”, the secretariat of which is held by BSI. This European
14、 Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2012, and conflicting national standards shall be withdrawn at the latest by August 2012. Attention is drawn to the possibility that some of the elements
15、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 has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This European Standar
16、d forms part of a series of tests for chemical properties of aggregates. Test methods for other properties of aggregates will be covered by the following European Standards: EN 932 (all parts), Tests for general properties of aggregates; EN 933 (all parts), Tests for geometrical properties of aggreg
17、ates; EN 1097 (all parts), Tests for mechanical and physical properties of aggregates; EN 1367 (all parts), Tests for thermal and weathering properties of aggregates. The other parts of EN 1744, Tests for chemical properties of aggregates, are: Part 1: Chemical analysis; Part 3: Preparation of eluat
18、es by leaching of aggregates; Part 4: Determination of water susceptibility of fillers for bituminous mixtures; Part 5: Determination of acid soluble chloride salts; Part 6: Determination of the influence of recycled aggregate extract on the initial setting time of cement. According to the CEN/CENEL
19、EC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania
20、, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 1744-7:2012-05 EN 1744-7:2012 (E) 4 1 Scope This European Standard specifies the test method used for the determination of the loss on ignition (
21、LOI) of aggregates (MIBA Aggregates) produced by processing Municipal Incinerator Bottom Ash (MIBA). This European Standard describes the reference method for LOI of MIBA Aggregates For the purpose of type testing and in case of dispute only the reference method should be used. For other purposes, i
22、n particular factory production control, other methods may be used provided that an appropriate working relationship with the reference method has been established. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable
23、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. EN 932-1, Tests for general properties of aggregates Part 1: Methods for sampling EN 932-2, Tests for general propertie
24、s of aggregates Part 2: Methods for reducing laboratory samples EN 932-5, Tests for general properties of aggregates Part 5: Common equipment and calibration 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 test specimen sample used in a singl
25、e determination when a test method requires more than one determination of a property 3.2 laboratory sample sample intended for laboratory testing 3.3 constant mass mass determined by successive weighings performed at least 1 h apart not differing by more than 0,1% NOTE 1 to entry In many cases cons
26、tant mass can be achieved after a test portion has been dried for a pre-determined period in a specified oven at (110 5) C. Test laboratories can determine the time required to achieve constant mass for specific types and sizes of sample dependent upon the drying capacity of the oven used. 3.4 MIBA
27、Aggregate aggregate produced by processing Municipal Incinerator Bottom Ash 4 Principle The proportion of unburned residues in MIBA aggregate is determined by measuring the loss on ignition in an oxidizing atmosphere. DIN EN 1744-7:2012-05 EN 1744-7:2012 (E) 5 The loss on ignition is expressed as th
28、e percentage of the dry mass of the initial sample after heating for 4 h at (480 25) C. NOTE Because of hydration by weathering, the LOI value of MIBA Aggregates may change during storage. 5 Apparatus Unless otherwise stated, all apparatus shall conform to the general requirements of EN 932-5. 5.1 W
29、ell ventilated drying oven, capable of being controlled to maintain a constant temperature of (110 5) C, equipped with a heat resistant tray made of non-corrodible material. 5.2 Electric muffle furnace capable of being controlled to maintain a constant temperature in the range (480 25) C. 5.3 Contai
30、ner and cover grid with 2 mm size apertures, suitable for use at a temperature of up to 550 C. NOTE Porcelain, quartz glass or platinum are appropriate materials for containers. 5.4 Crushing and grinding equipment to reduce aggregates to sizes that pass a 4 mm size test sieve while producing a minim
31、um of fines. 5.5 Balance, capable of weighing up to 10 kg, readable to the nearest 1 g. 5.6 Balance, capable of weighing up to 300 g, readable to the nearest 0,01 g. 5.7 Test sieve, 4 mm size. 5.8 Desiccator with desiccant. 6 Sampling and preparation of test specimens 6.1 Laboratory sample The labor
32、atory sample shall be taken in accordance with the procedures specified in EN 932-1. The mass of the laboratory sample shall be not less than the mass specified in Table 1 appropriate to the upper (D) sieve size of the aggregate. Dry the sample to constant mass, at a temperature of (110 5) C. NOTE D
33、rying at a higher temperature will oxidise any sulfides. Table 1 Minimum mass of laboratory sample Upper (D) sieve size of the aggregate, mm Minimum mass of laboratory sample, kg 63 45 31,5 22,4 or less 50 35 15 5 Record the laboratory sample mass. DIN EN 1744-7:2012-05 EN 1744-7:2012 (E) 6 6.2 Test
34、 specimens Stepwise mix, crush and reduce the laboratory sample using the procedures specified in EN 932-2 to produce a sub-sample of approximately 400 g of aggregate that passes the 4 mm size test sieve. Reduce this sub-sample further to produce two test specimens, each with a mass between 50 g and
35、 100 g. Retain the rest of the sub-sample (8.2). 7 Procedure Pre-ignite the container in the muffle furnace at (480 25) C. Allow the container to cool in the desiccator and weigh (Mc) it Place the first test specimen in the container. The thickness of the layer of particles shall be less than 15 mm.
36、 Weigh the test specimen in the container and record the mass, M0, to the nearest 0,01 g Cover the container with the cover grid. NOTE The grid prevents the loss of any fragments from particles that may break down during heating. Place the container in the muffle furnace controlled at (480 25) C. Le
37、ave the container in the furnace for at least 240 min. Remove the container from the furnace and place it in the desiccator. Allow it to cool to room temperature. Weigh the ignited test specimen in the container, M1, to the nearest 0,01 g. Repeat for the second test specimen. 8 Calculation and expre
38、ssion of results 8.1 Calculation For each test specimen, calculate the loss on ignition using the following formula: 100010=cM-MM-MX (1) Where X is the loss on ignition of the test specimen, (in %); M0is the weight of the test specimen with the container; M1 is the weight of the ignited test specime
39、n with the container; Mcis the weight of the pre-ignited container. Record each result as X1and X2, to the nearest 0,01%. Calculate the mean value of the two results using the following formula: 221XXXM+= (2) DIN EN 1744-7:2012-05 EN 1744-7:2012 (E) 7 Where XMis the mean loss on ignition, (in %). Re
40、cord the result as XM, to the nearest 0,1 %. 8.2 Precision check Check the range of the individual values for loss on ignition using the following criteria: If XM 3,0 %, the difference between X1and X2shall be 0,6 % If XM 3,0 %, the difference between X1and X2shall be 1,0 % If the precision check cr
41、iteria are not complied with, repeat the test procedure using two more test portions taken from the crushed and sieved sub-sample (6.2). Record each result as X3and X4, to the nearest 0,01 %. Calculate the mean value of the four results using the following formula: 44321XXXXXM+(3) Where XM is the me
42、an loss on ignition, (in %). Record the result as XM, to the nearest 0,1 %. 9 Test report The test report shall confirm that the loss on ignition test was carried out in accordance with this European Standard and include the following information: a) source of sample; b) designation of the sample; c) aggregate size of the sample; d) mass of the laboratory sample; e) individual values of loss on ignition; f) mean value of loss on ignition; g) date of test; h) reference to this test standards (EN 1744-7); i) identification of the testing laboratory. DIN EN 1744-7:2012-05
