1、BSI Standards PublicationBS EN 933-8:2012Tests for geometrical propertiesof aggregatesPart 8: Assessment of fines Sandequivalent testBS EN 933-8:2012+A1:2015BS EN 933-8:2012+A1:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 933-8:2012+A1:2015. It supersede
2、s BS EN 933-8:2012 which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by .The UK participation in it
3、s preparation was entrusted by Technical Committee B/502, Aggregates, to Subcommitee B/502/6, Test methods.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Use
4、rs are responsible for its correct application. The British Standards Institution 2015. Published by BSI Standards Limited 2015ISBN 978 0 580 88024 7ICS 91.100.15Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority o
5、f the Standards Policy and Strategy Committee on 29 February 2012.Amendments/corrigenda issued since publicationDate Text affected31 May 2015 Implementation of CEN amendment A1:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 933-8:2012+A1 May 2015 ICS 91.100.15 Supersedes EN 933-8:2012Engli
6、sh Version Tests for geometrical properties of aggregates - Part 8: Assessment of fines - Sand equivalent test Essais pour dterminer les caractristiques gomtriques des granulats - Partie 8 : valuation des fines - quivalent de sable Prfverfahren fr geometrische Eigenschaften von Gesteinskrnungen - Te
7、il 8: Beurteilung von Feinanteilen - Sandquivalent-Verfahren This European Standard was approved by CEN on 6 November 2011 and includes Amendment 1 approved by CEN on 20 April 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving th
8、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
9、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
10、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
11、n, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN
12、 national Members. Ref. No. EN 933-8:2012+A1:2015 EEN 933-8:2012+A1:2015 (E) 2 Contents Page Foreword . 3 1 Scope 5 2 Normative references . 5 3 Terms and definitions . 5 4 Principle . 6 5 Reagents 6 6 Apparatus 6 7 Preparation of test specimens . 12 7.1 General . 12 7.2 First subsample . 12 7.3 Sec
13、ond subsample . 12 8 Procedure 13 8.1 General . 13 8.2 Filling of the graduated cylinders . 13 8.3 Shaking the graduated cylinders 14 8.4 Washing . 14 8.5 Measurements . 15 9 Calculation and expression of results 16 10 Test report . 17 10.1 Required data 17 10.2 Optional data . 17 Annex A (normative
14、) Procedure for the determination of the sand equivalent value of the 0/4 mm fraction 18 Annex B (informative) Example of a test data sheet . 19 BS EN 933-8:2012+A1:2015EN 933-8:2012+A1:2015 (E)EN 933-8:2012+A1:2015 (E) 2 Contents Page Foreword . 3 1 Scope 5 2 Normative references . 5 3 Terms and de
15、finitions . 5 4 Principle . 6 5 Reagents 6 6 Apparatus 6 7 Preparation of test specimens . 12 7.1 General . 12 7.2 First subsample . 12 7.3 Second subsample . 12 8 Procedure 13 8.1 General . 13 8.2 Filling of the graduated cylinders . 13 8.3 Shaking the graduated cylinders 14 8.4 Washing . 14 8.5 Me
16、asurements . 15 9 Calculation and expression of results 16 10 Test report . 17 10.1 Required data 17 10.2 Optional data . 17 Annex A (normative) Procedure for the determination of the sand equivalent value of the 0/4 mm fraction 18 Annex B (informative) Example of a test data sheet . 19 EN 933-8:201
17、2+A1:2015 (E) 3 Foreword This document (EN 933-8:2012+A1:2015) has 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 endorsem
18、ent, at the latest by November 2015, and conflicting national standards shall be withdrawn at the latest by November 2015. 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 identi
19、fying any or all such patent rights. This document supersedes !EN 933-8:2012“. This document includes Amendment 1 approved by CEN on 2015-04-19. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. This revised standard differs from EN 933-8:1999 for 0
20、/2 mm size aggregates where the fines content was not limited to 10 %. 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 the following European Standards: EN 932, Tests for general
21、 properties of aggregates; EN 1097, Tests for mechanical 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
22、of EN 933, Tests for geometrical properties of aggregates, will be: Part 1: Determination of particle size 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 4: Determi
23、nation of particle shape Shape index; Part 5: Determination of percentage of crushed and broken surfaces in coarse aggregate particles; Part 6: Assessment of surface characteristics Flow coefficient of aggregates; Part 7: Determination of shell content Percentage of shells in coarse aggregates; Part
24、 9: Assessment of fines Methylene blue test; Part 10: Assessment of fines Grading of filler aggregates (air jet sieving); BS EN 933-8:2012+A1:2015EN 933-8:2012+A1:2015 (E)EN 933-8:2012+A1:2015 (E) 4 Part 11: Classification test for the constituents of coarse recycled aggregate. According to the CEN-
25、CENELEC 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary
26、, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 933-8:2012+A1:2015EN 933-8:2012+A1:2015 (E)EN 933-8:2012+A1:2015 (E) 4 Part 11: Classification test fo
27、r the constituents of coarse recycled aggregate. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, F
28、ormer 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 the United Kingdom. EN 933-8:2012+A1:2015 (E) 5 1 Scope Th
29、is European Standard describes the reference method used for type testing and in case of dispute for the determination of the sand equivalent value of 0/2 mm fraction (for 0/4 mm, see Annex A) in fine aggregates or all-in aggregates. For other purposes, in particular factory production control, othe
30、r methods may be used provided that an appropriate working relationship with the reference method has been established. 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
31、references, the latest edition of the referenced document (including any amendments) applies. EN 932-2, Tests 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, T
32、ests for geometrical properties 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 1097-5, Tests for mechanical and phy
33、sical properties of aggregates Part 5: Determination of the water content by drying in a ventilated oven 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 fines particle size fraction of an aggregate which passes the 0,063 mm sieve 3.2 laborato
34、ry sample sample intended for laboratory testing 3.3 particle size fraction (di/Di) fraction of an aggregate passing the larger (Di) of two sieves and retained on the smaller (di) NOTE The lower limit dimay be zero. 3.4 subsample sample obtained by means of a sample reduction procedure 3.5 test port
35、ion sample used as a whole in a single test BS EN 933-8:2012+A1:2015EN 933-8:2012+A1:2015 (E)EN 933-8:2012+A1:2015 (E) 6 3.6 test specimen sample used in a single determination when a test method requires more than one determination of a property 4 Principle A 0/2 mm test specimen of aggregate with
36、a maximum fines content of 10 % (either natural or obtained after grading curve adjustment) and a small quantity of washing and flocculating solution are poured into a graduated cylinder and are agitated to loosen the clay coatings from the coarser particles in the test portion. The aggregate is the
37、n irrigated using additional washing and flocculating solution forcing the fine particles into suspension. After a fixed time, the sand equivalent value (SE(10) is calculated as the height of sediment expressed as a percentage of the total height of sediment and suspension in the cylinder. 5 Reagent
38、s 5.1 Concentrated solution, made up of: a) crystalline calcium chloride, CaCl2.6H2O or anhydrous calcium chloride, CaCl2; b) glycerine, 99 % glycerol, laboratory reagent quality; c) formaldehyde solution, 40 % by volume, laboratory reagent quality; d) distilled or demineralised water. Dissolve (219
39、 2) g of crystalline calcium chloride in (350 50) ml of distilled or demineralised water, cool to room temperature and if necessary filter through a medium or coarse grade filter paper. Add (480 5) g of glycerine and (12,5 0,5) g of formaldehyde solution and dilute to 1 l of solution with distilled
40、or demineralised water and mix thoroughly. NOTE 1 219 g CaCl2.6H20 6H2O is equivalent to 111 g anhydrous calcium chloride CaCl2. NOTE 2 It is recommended that the concentrated solution is stored protected from light in glass or plastics flasks containing (125 1) ml. NOTE 3 Sodium hypochlorite (bleac
41、h) with 2,6 % active chloride can be used instead of formaldehyde. In case of dispute, use formaldehyde. 5.2 Washing and flocculating solution, prepared by diluting (125 1) ml concentrated solution (5.1) to (5,00 0,01) l using distilled or demineralised water. NOTE In preparing the washing solution,
42、 the concentrated solution should first be vigorously shaken and subsequently its container should be rinsed several times using distilled or demineralised water, pouring the rinsing water into the 5 l flask before diluting to 5 l. Washing solution shall not be used more than 28 days after preparati
43、on or if it is cloudy or contains any precipitate or mould. 6 Apparatus 6.1 All apparatus, unless otherwise stated, shall conform to the general requirements of EN 932-5. BS EN 933-8:2012+A1:2015EN 933-8:2012+A1:2015 (E)EN 933-8:2012+A1:2015 (E) 6 3.6 test specimen sample used in a single determinat
44、ion when a test method requires more than one determination of a property 4 Principle A 0/2 mm test specimen of aggregate with a maximum fines content of 10 % (either natural or obtained after grading curve adjustment) and a small quantity of washing and flocculating solution are poured into a gradu
45、ated cylinder and are agitated to loosen the clay coatings from the coarser particles in the test portion. The aggregate is then irrigated using additional washing and flocculating solution forcing the fine particles into suspension. After a fixed time, the sand equivalent value (SE(10) is calculate
46、d as the height of sediment expressed as a percentage of the total height of sediment and suspension in the cylinder. 5 Reagents 5.1 Concentrated solution, made up of: a) crystalline calcium chloride, CaCl2.6H2O or anhydrous calcium chloride, CaCl2; b) glycerine, 99 % glycerol, laboratory reagent qu
47、ality; c) formaldehyde solution, 40 % by volume, laboratory reagent quality; d) distilled or demineralised water. Dissolve (219 2) g of crystalline calcium chloride in (350 50) ml of distilled or demineralised water, cool to room temperature and if necessary filter through a medium or coarse grade f
48、ilter paper. Add (480 5) g of glycerine and (12,5 0,5) g of formaldehyde solution and dilute to 1 l of solution with distilled or demineralised water and mix thoroughly. NOTE 1 219 g CaCl2.6H20 6H2O is equivalent to 111 g anhydrous calcium chloride CaCl2. NOTE 2 It is recommended that the concentrat
49、ed solution is stored protected from light in glass or plastics flasks containing (125 1) ml. NOTE 3 Sodium hypochlorite (bleach) with 2,6 % active chloride can be used instead of formaldehyde. In case of dispute, use formaldehyde. 5.2 Washing and flocculating solution, prepared by diluting (125 1) ml concentrated solution (5.1) to (5,00 0,01) l using distilled or demineralised water. NOTE In preparing the washing solution, the concentrated solution should first be vigorousl
