1、January 2015 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
2、 91.100.15!%?Dg“2283368www.din.deDDIN EN 933-4Tests for geometrical properties of aggregates Part 4: Determination of particle shape Shape index;English version EN 933-4:2008,English translation of DIN EN 933-4:2015-01Prfverfahren fr geometrische Eigenschaften von Gesteinskrnungen Teil 4: Bestimmung
3、 der Kornform Kornformkennzahl;Englische Fassung EN 933-4:2008,Englische bersetzung von DIN EN 933-4:2015-01Essais pour dterminer les caractristiques gomtriques des granulats Partie 4: Dtermination de la forme des granulats Coefficient de forme;Version anglaise EN 933-4:2008,Traduction anglaise de D
4、IN EN 933-4:2015-01SupersedesDIN EN 933-4:2008-06 andDIN EN 933-4 Corrigendum1:2008-09www.beuth.deDocument comprises 13 pagesIn case of doubt, the German-language original shall be considered authoritative.12.14DIN EN 933-4:2015-01 2 A comma is used as the decimal marker. National foreword This docu
5、ment (EN 933-4:2008) has been prepared by Technical Committee CEN/TC 154 “Aggregates” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the DIN-Normenausschuss Materialprfung (DIN Standards Committee Materials Testing), Working Committee NA 062-03-13 AA
6、Gemeinschaftsarbeitsausschuss NA 062/FGSV: Gesteinskrnungen; Prfverfahren, Petrographie, Probenahme und Przision. Amendments This standard differs from DIN EN 933-4:1999-12 as follows: a) NOTE 1 to Subclause 7.2 has been deleted; b) test sieves of aperture sizes 10 mm and 12,5 mm have been added (Su
7、bclause 7.3). Compared with DIN EN 933-4:2008-06 and DIN EN 933-4 Corrigendum 1:2008-09, the following corrections have been made: a) DIN EN 933-4 Corrigendum 1:2008-09 has been incorporated in this document (modified scope); b) in Clause 6, Table 1, column 1, first line under the heading, “36” has
8、been replaced by “63”. Previous editions DIN DVM 1991 = DIN 51991: 1940-12 DIN 52114: 1972-11, 1988-08 DIN EN 933-4: 1999-12, 2008-06 DIN EN 933-4 Corrigendum 1: 2008-09 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 933-4March 2008ICS 91.100.15 Supersedes EN 933-4:1999 English VersionTests for g
9、eometrical properties of aggregates - Part 4:Determination of particle shape - Shape indexEssais pour dterminer les caractristiques gomtriquesdes granulats - Partie 4: Dtermination de la forme desgranulats - Coefficient de formePrfverfahren fr geometrische Eigenschaften vonGesteinskrnungen - Teil 4:
10、 Bestimmung der Kornform -KornformkennzahlThis European Standard was approved by CEN on 4 February 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration.
11、Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN 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 translationun
12、der the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, H
13、ungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre:
14、 rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 933-4:2008: EEN 933-4:2008 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Principle5 5 Apparatus
15、 .5 6 Preparation of test portion6 7 Procedure .7 8 Calculation and expression of results.8 9 Test report 9 Annex A (informative) Example of a test data sheet used for determining the shape index of coarse aggregate 11 DIN EN 933-4:2015-01 EN 933-4:2008 (E) 3 Foreword This document (EN 933-4:2008) h
16、as been prepared by Technical 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 September 2008, and conflicting national s
17、tandards shall be withdrawn at the latest by September 2008. 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 supersedes
18、EN 933-4:1999. This European Standard is one of a series of standards for tests for geometrical properties of aggregates. Test methods for other properties of aggregates are covered by Parts of the following European Standards: EN 932, Tests for general properties of aggregates EN 1097, Tests for me
19、chanical and physical properties of aggregates EN 1367, Tests for thermal and weathering properties of aggregates EN 1744, Tests for chemical properties of aggregates EN 13179, Tests for filler aggregate used in bituminous mixtures The other parts of EN 933 are: Part 1 - Determination of particle si
20、ze distribution - Sieving method Part 2 - Determination of particle size distribution - Test sieves, nominal size of apertures Part 3 - Determination of particle shape - Flakiness index Part 5 - Determination of percentage of crushed and broken surfaces in coarse aggregate particles Part 6 - Assessm
21、ent of surface characteristics - Flow coefficient of aggregates Part 7 - Determination of shell content - Percentage of shells in coarse aggregates Part 8 - Assessment of fines - Sand equivalent test Part 9 - Assessment of fines - Methylene blue test Part 10 - Assessment of fines - Grading of filler
22、s (air jet sieving) According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Icela
23、nd, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 933-4:2015-01 EN 933-4:2008 (E) 4 1 Scope This standard describes the reference method used for type testing and in
24、cases of dispute, for the determination of the shape index of coarse aggregates. For other purposes, in particular factory production control, other methods may be used provided an appropriate working relationship with the reference method has been established. The test method specified in this Euro
25、pean Standard is applicable to particle size fractions di/Diwhere Di 63 mm and di 4 mm. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition o
26、f the referenced document (including any amendments) applies. EN 932-2, Test for general properties of aggregates - Part 2: Methods for reducing laboratory samples EN 932-5, Tests for general properties of aggregates - Part 5: Common equipment and calibration EN 933-1, Tests for geometrical properti
27、es of aggregates - Part 1: Determination of particle size distribution - Sieving method EN 933-2, Tests for geometrical properties of aggregates - Part 2: Determination of particle size distribution - Test sieves, nominal size of apertures EN 1097-6, Tests for mechanical and physical properties of a
28、ggregates - Part 6: Determination of the particle density and water absorption 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 aggregate size designation of aggregate in terms of lower (d) and upper (D) sieve sizes, expressed as d/D NOTE This
29、 designation accepts the presence of some particles which will be retained on the upper sieve (oversize) and some which will pass the lower sieve (undersize). 3.2 particle size fraction di/Di fraction of an aggregate passing the larger (Di) of two sieves and retained on the smaller (di) 3.3 test por
30、tion sample used as a whole in a single test 3.4 constant mass successive weighings after drying at least 1 h apart not differing by more than 0,1 % NOTE In many cases constant mass can be achieved after a test portion has been dried for a pre-determined period in a specified oven (see 5.5) at (110
31、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. DIN EN 933-4:2015-01 EN 933-4:2008 (E) 5 3.5 particle length L maximum dimension of a particle as defined by the greatest dista
32、nce between two parallel planes tangential to the particle surface 3.6 particle thickness E minimum dimension of a particle as defined by the least distance between two parallel planes tangential to the particle surface 4 Principle Individual particles in a sample of coarse aggregate are classified
33、on the basis of the ratio of their length L to thickness E using a particle slide gauge where necessary. The shape index is calculated as the mass of particles with a ratio of dimensions L/E more than 3 expressed as a percentage of the total dry mass of particles tested. 5 Apparatus 5.1 All apparatu
34、s, unless otherwise stated, shall conform to the general requirements of EN 932-5. 5.2 Particle slide gauge, an example of which is shown in Figure 1. 5.3 Test sieves, with nominal size of apertures as specified in EN 933-2. 5.4 Tightly fitting pan and lid, for the sieves. 5.5 Ventilated oven, therm
35、ostatically controlled to maintain (110 5) C, or other suitable equipment for drying the aggregates, if it does not cause any particle size breakdown. 5.6 Balances or scales, of suitable capacity, readable to 0,1 % of the mass to be weighed. 5.7 Trays 5.8 Sieving machine, (optional). DIN EN 933-4:20
36、15-01 EN 933-4:2008 (E) 6 Dimensions in millimetres Figure 1 - Example of a particle slide gauge 6 Preparation of test portion The sample shall be reduced in accordance with the requirements of EN 932-2. Dry the sample at (110 5) C to constant mass. Sieve on appropriate test sieves with sufficient v
37、igour to ensure complete separation of particles greater than 4 mm. Discard the particles retained on the 63 mm test sieve and those passing the 4 mm test sieve. If necessary further reduce the sample in accordance with EN 932-2 to produce a test portion. Record the mass of the test portion as Mo. D
38、IN EN 933-4:2015-01 EN 933-4:2008 (E) 7 The mass of the test portion shall be as specified in Table 1. Table 1 - Mass of test portions Upper aggregate size D mm Test portion mass (minimum) kg 63 32 16 8 45 6 1 0,1 NOTE 1 For the other upper aggregate sizes D, appropriate test portion masses may be i
39、nterpolated from those given in Table 1. NOTE 2 For aggregates of particle density less than 2,00 Mg/m3or more than 3,00 Mg/m3in accordance with EN 1097-6 an appropriate correction should be applied to the test portion masses given in Table 1 based on the density ratio, in order to produce a test po
40、rtion of approximately the same volume as those for aggregates of normal density. Sample reduction shall yield a test portion with a mass larger than the minimum but not of an exact predetermined value. 7 Procedure 7.1 General The test shall be carried out on each particle size fraction di/Di where
41、Di 2di. Test portions from samples for which D 2d shall be separated into particle size fractions di/Di where Di 2diduring the subsequent test procedure. 7.2 Test portions where D 2d Separate the particle size fraction di/Diwhere Di 2difrom the test portion by sieving in accordance with EN 933-1. Di
42、scard any particles smaller than diand any larger than Di. Record the particle size fraction di/Dithat is to be tested and record the mass of the particle size fraction di/Dias M1. Assess the length L and thickness E of each particle using a particle slide gauge where necessary and set aside those p
43、articles which have a dimensional ratio L/E 3. These particles are classified as non-cubical. NOTE The number of particles requiring individual classification using the gauge can be reduced by a preliminary separation of particles with a L/E ratio significantly different from 3. Weigh the non-cubica
44、l particles and record their mass as M2. DIN EN 933-4:2015-01 EN 933-4:2008 (E) 8 7.3 Test portion where D 2d Separate the test portion into particle size fractions di/Diwhere Di 2diby sieving in accordance with EN 933-1. NOTE 1 Test sieves of appropriate aperture sizes from the following series sho
45、uld be used, viz. 4 mm; 5,6 mm; 8 mm; 10 mm; 11,2 mm; 12,5 mm; 16 mm; 22,4 mm; 31,5 mm; 45 mm; 63 mm; and the values of diandDiof each size fraction tested should be recorded in the test report. Record the mass of each particle size fraction (Mi) and calculate and record the percentage by mass of ea
46、ch particle size fraction di/Dito the test portion mass Moas Vi. Discard any size fraction di/Diwhich comprises less than 10 % of M0. NOTE 2 If any remaining size fraction di/Dicontains less than 100 particles, it should if required, be recorded in the test report. Any size fraction di/Diwhich conta
47、ins an excessive number of particles can be further reduced in accordance with EN 932-2, but after such reduction at least 100 particles of that size fraction shall remain. Record the mass of particles to be tested in each remaining particle size fraction di/Dias M1i. Assess the length L and thickne
48、ss E of each particle using a particle slide gauge where necessary and set aside those particles in each size fraction which have a dimensional ratio L/E 3. These particles are classified as non-cubical. Record the mass of non-cubical particles in each of these size fractions di/Dias M2i. 8 Calculat
49、ion and expression of results 8.1 Test portions where D 2d Calculate the shape index (SI) in accordance with the following equation: 100)(12= MMSI (1) where M1is the mass of the test portion, in grams; M2is the mass of the non-cubical particles, in grams. Record the shape index to the nearest whole number. DIN EN 933-4:2015-01 EN 933-4:2008 (E) 9 8.2 Test portions where D 2d 8.2.1 Size fractions not reduced Calculate the shape index (SI) in accordance with the following equation: 10012=iiMMSI (2) where M1iis the sum of the m
