1、November 2012 Translation by DIN-Sprachendienst.English price group 9No 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).IC
2、S 91.100.15!$:M“1922342www.din.deDDIN EN 1744-8Tests for chemical properties of aggregates Part 8: Sorting test to determine metal content of Municipal IncineratorBottom Ash (MIBA) Aggregates;English version EN 1744-8:2012,English translation of DIN EN 1744-8:2012-11Prfverfahren fr chemische Eigensc
3、haften von Gesteinskrnungen Teil 8: Sortierverfahren zur Bestimmung des Metallgehalts in Hausmllverbrennungsasche(HMV-Asche);Englische Fassung EN 1744-8:2012,Englische bersetzung von DIN EN 1744-8:2012-11Tests sur les proprits chimiques des granulats Partie 8: Essai de comptage des particules mtalli
4、ques contenues dans les granulatsprovenant de mchefers issus dincinrateurs municipaux;Version anglaise EN 1744-8:2012,Traduction anglaise de DIN EN 1744-8:2012-11www.beuth.deDocument comprises 13 pagesIn case of doubt, the German-language original shall be considered authoritative.10.12 DIN EN 1744-
5、8:2012-11 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 154 “Aggregates” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing St
6、andards Committee), Working Committee NA 062-03-13 AA Gemeinschafts-arbeitsausschuss NMP/FGSV: Gesteinskrnungen; Prfverfahren, Petrographie, Probenahme und Przision. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1744-8 August 2012 ICS 13.030.50 English Version Tests for chemical properties of
7、 aggregates Part 8: Sorting test to determine metal content of Municipal Incinerator Bottom Ash (MIBA) Aggregates Tests sur les proprits chimiques des granulats Partie 8: Essai de comptage des particules mtalliques contenues dans les granulats provenant de mchefers issus dincinrateurs municipaux Prf
8、verfahren fr chemische Eigenschaften von Gesteinskrnungen Teil 8: Sortierverfahren zur Bestimmung des Metallgehalts in Hausmllverbrennungsasche (HMV-Asche) This European Standard was approved by CEN on 13 July 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stip
9、ulate 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 national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European
10、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 language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the
11、 national standards bodies of Austria, 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
12、, 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-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means rese
13、rved worldwide for CEN national Members. Ref. No. EN 1744-8:2012: E 2 Contents PageForeword . 31 Scope 42 Normative references . 43 Definitions 44 Principle . 55 Apparatus 56 Preparation of subsample 67 Procedure 67.1 Further reduction of the subsample . 67.2 Separating into size fractions 77.3 Sepa
14、rating metallic particles . 77.4 Weight of metallic particles . 78 Calculation and expression of results 79 Test report . 89.1 Required data 89.2 Optional data . 8Annex A (informative) Supplementary method for preparing the particle size fractions using crushing and sieving . 9A.1 General . 9A.2 Pro
15、cedure 9A.2.1 32/63 mm size fraction 9A.2.2 16/32 mm size fraction 9A.2.3 4/16 mm size fraction 9A.3 Weight of metallic particles . 10A.4 Calculations and test report 10Bibliography . 11DIN EN 1744-8:2012-11 EN 1744-8:2012 (E) 3 Foreword This document (EN 1744-8:2012) has been prepared by Technical
16、Committee CEN/TC 154 “Aggregates”, the secretariat of 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 February 2013, and conflicting national standards shall be withdrawn at
17、the latest by February 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 responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to
18、CEN by the European Commission and the European Free Trade Association. This document 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, Tests for general properties of ag
19、gregates EN 933, Tests for geometrical properties of aggregates EN 1097, Tests for mechanical and physical properties of aggregates EN 1367, Tests for thermal and weathering properties of aggregates The other parts of EN 1744, Tests for chemical properties of aggregates, are: Part 1: Chemical analys
20、is Part 3: Preparation of eluates 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
21、 Part 7: Determination of loss of ignition of Municipal Incinerator Bottom Ash Aggregate (MIBA Aggregate) 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, Croa
22、tia, 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 t
23、he United Kingdom. DIN EN 1744-8:2012-11 EN 1744-8:2012 (E) 4 1 Scope This European Standard specifies a simple method for the examination of Municipal Incinerator Bottom Ash (MIBA) Aggregates for the purpose of estimating the relative proportions of metallic constituents. This European Standard des
24、cribes the reference methods used for type testing and, in case of dispute, for estimating the relative proportions of aluminium or other metallic constituents of MIBA Aggregates. For other purposes, in particular factory production control, other methods may be used provided that an appropriate wor
25、king relationship with the reference method has been established. NOTE MIBA Aggregates can also contain agglomerates which only contain a portion of metal. A supplementary method for preparation of a test portion containing agglomerated particles, using crushing and sieving, is given in Annex A (nor
26、mative). 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
27、any amendments) applies. EN 932-1, Test for general properties of aggregates Part 1: Methods for sampling EN 932-2, Test for general properties of aggregates Part 2: Methods for reducing laboratory samples EN 932-5, Test for general properties of aggregates Part 5: Common equipment and calibration E
28、N 933-1, Test for geometrical properties of aggregates Part 1: Determination of particle size distribution Sieving method EN 933-2, Test for geometrical properties of aggregates Part 2: Determination of particle size distribution Test sieves, nominal size of apertures 3 Terms and definitions For the
29、 purpose of this standard, the following definitions apply: 3.1 laboratory sample sample intended for laboratory testing 3.2 subsample sample obtained by means of a sample reduction procedure 3.3 constant mass mass determined by successive weighings performed at least 1 h apart and not differing by
30、more than 0,1 % Note 1 to entry: In many cases, constant 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 DIN EN 1744-8:2012-11 EN 1744-8:2012 (E) 5 achieve constant mass for sp
31、ecific types and sizes of sample dependent upon the drying capacity of the oven used. 3.4 MIBA Aggregate aggregate produced by processing Municipal Incinerator Bottom Ash 3.5 particle size fraction (di/Di) fraction of an aggregate passing the larger (Di) of two sieves and retained on the smaller sie
32、ve (di) 4 Principle The test consists of sorting particles from a subsample of the coarse part of MIBA Aggregates by hand to separate out metallic particles. The metallic particles are then separated into ferrous (magnetic) and non-ferrous (non-magnetic) particles using a magnet. The proportion by m
33、ass of each of these constituents is determined and expressed as a percentage of the mass of the subsample. NOTE 1 For the purpose of this standard, ferrous particles are to be understood as particles attracted by the hand held magnet and non-ferrous particles are metallic non-ferrous particles. NOT
34、E 2 Aluminium/alloy particles in coarse aggregates mixtures might react and cause change in volume. When it is not possible to separate the metallic fraction from the agglomerate particles, those agglomerates should be handled as metallic particles. 5 Apparatus Unless otherwise stated, all apparatus
35、 shall conform to the general requirements of EN 932-5. 5.1 Test sieves, 63 mm, 31,5 mm, 16 mm and 4 mm size conforming to EN 933-2. An 8 mm size test sieve is also required if the supplementary test portion preparation method in Annex A (normative) is used. 5.2 Tightly fitting pan and lid, for the
36、sieves. 5.3 Ventilated oven, thermostatically controlled to maintain a temperature of (110 5) C. 5.4 Balance, accurate to 0,1 % of the mass of the test portion. 5.5 Trays, or other suitable containers. 5.6 Hand held magnet, with a mass in the range of 300 g to 600 g and with a pull strength of at le
37、ast 60 kg. 5.7 Brushes, for cleaning the sieves and the sieved particles. 5.8 Sieving machine, (optional). 5.9 Laboratory crusher, if the supplementary test portion preparation method in Annex A (normative) is used. DIN EN 1744-8:2012-11 EN 1744-8:2012 (E) 6 6 Preparation of subsample Bulk samples s
38、hall be taken in accordance with EN 932-1 and reduced in accordance with EN 932-2 to produce a laboratory sample with a minimum mass as given in Table 1. Table 1 Minimum mass of laboratory sample Upper aggregate size, D, mm Minimum laboratory sample mass, kg Coarse aggregate All-in aggregate63 50 75
39、 31,5 or less 20 30 Dry the laboratory sample at (110 5) C to constant mass. Weigh and record the dry mass as M0. Sieve the sample on the 63 mm and 4 mm sieves, using the EN 933-1 dry sieving method. Agitate with sufficient vigour to ensure complete separation of particles bigger than 4 mm. Weigh an
40、d record the mass of particles retained on the 63 mm sieve as M63and then discard them. Weigh and record the mass of the particles passing the 4 mm sieve as M4, and then discard them. Record the mass of the remaining subsample as M1. 7 Procedure 7.1 Further reduction of the subsample If necessary, f
41、urther reduce the size of the remaining subsample to give at least 1 000 particles in accordance with EN 932-2. Table 2 gives guidance on the minimum mass required. Table 2 Guidance on the mass of at least 1 000 particles Upper aggregate size, D, mm Minimum subsample mass, kg 63 50 31,5 1020 4 16 2
42、14 1 8 0,5 NOTE The actual mass required to give 1 000 particles depends upon the particle size distribution and particle density of the aggregate. Experience will allow test laboratories to estimate the mass required for aggregates that are tested routinely. If a reduced 4/63 mm size subsample is u
43、sed, weigh and record the mass of the remaining subsample as M2. DIN EN 1744-8:2012-11 EN 1744-8:2012 (E) 7 7.2 Separating into size fractions Sieve the 4/63 mm size subsample into the three size fractions in Table 3 using the dry sieving procedure of EN 933-1. Table 3 Size fractions for initially s
44、eparation, mm 4/16 16/32 32/63Place each size fraction in a separate tray. NOTE 1 Sieving into size fractions makes sorting easier. NOTE 2 For some aggregates, there may not be any particles in the larger size fractions. NOTE 3 If necessary, the supplementary test portion preparation method in Annex
45、 A (normative) can be used after this initial separation stage. 7.3 Separating metallic particles Spread the particles in the 32/63 mm size fraction onto a clean, flat surface and separate the metallic particles by hand. If necessary, use a small brush to clean finer particles from the metal pieces.
46、 NOTE Particles can also be washed with a minimum amount of water to aid separation of the finer particles. If water is used, the particles need to be dried to constant mass again before weighing. When it is not possible to separate the metallic fraction from the agglomerate particles, those agglome
47、rates should be handled as metallic particles. Use the magnet to further separate the metallic particles into ferrous (magnetic) and non-ferrous (non-magnetic) particles. Place them in separate marked trays (MF1and MNF1). Repeat this procedure with the 16/32 mm size fraction (MF2and MNF2) and then w
48、ith the 4/16 mm size fraction (MF3and MNF3). 7.4 Weight of metallic particles Weigh the mass of the ferrous particles of each fraction (MF1, MF2and MF3). Sum the values and record the total mass as MF. Weigh the mass of the non-ferrous particles of each fraction (MNF1, MNF2and MNF3). Sum the values and record the total mass as MNF. 8 Calculation and expression of results Calculate the percentage by mass of each metallic constitu
