1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 933-8:2012Tests for geometrical propertiesof aggregatesPart 8: Assessment of fines Sandequivalent testCopyright European Committee for Standardization Provided by IHS under
2、 license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 933-8:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 933-8:2012. Itsupersedes BS EN 933-8:1999 which is withdrawn.The UK participation in its preparat
3、ion was entrusted to TechnicalCommittee B/502/6, Test methods.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The
4、 British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 74435 8ICS 91.100.15Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 29 Fe
5、bruary 2012.Amendments issued since publicationDate Text affectedCopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 933-8:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM
6、 EN 933-8 January 2012 ICS 91.100.15 Supersedes EN 933-8:1999English 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 : Evaluation des fines - Equivalent de sable
7、Prfverfahren fr geometrische Eigenschaften von Gesteinskrnungen - Teil 8: Beurteilung von Feinanteilen - Sandquivalent-Verfahren This European Standard was approved by CEN on 6 November 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
8、 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 Standard exists in three
9、 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 national standards bodi
10、es of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and Un
11、ited 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 reserved worldwide for CEN national Members. Ref. No. EN 933-8:2012
12、: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 933-8:2012EN 933-8:2012 (E) 2 Contents Page Foreword . 31 Scope 52 Normative references . 53 Terms and definitions . 54 P
13、rinciple . 65 Reagents 66 Apparatus 67 Preparation of test specimens . 127.1 General . 127.2 First subsample . 127.3 Second subsample . 128 Procedure 138.1 General . 138.2 Filling of the graduated cylinders . 138.3 Shaking the graduated cylinders 148.4 Washing . 148.5 Measurements . 159 Calculation
14、and expression of results 1710 Test report . 1710.1 Required data 1710.2 Optional data . 17Annex A (normative) Procedure for the determination of the sand equivalent value of the 0/4 mm fraction 18Annex B (informative) Example of a test data sheet . 19Copyright European Committee for Standardization
15、 Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 933-8:2012EN 933-8:2012 (E) 3 Foreword This document (EN 933-8:2012) has been prepared by Technical Committee CEN/TC 154 “Aggregates”, the secretariat of which is held by B
16、SI. 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 July 2012, and conflicting national standards shall be withdrawn at the latest by July 2012. Attention is drawn to the possibility that some of
17、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 EN 933-8:1999. This revised standard differs from EN 933-8:1999 for 0/2 mm size aggregates where the fines conte
18、nt 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 properties of aggregates; EN 1097, Tests f
19、or 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 of EN 933, Tests for geometrical properties
20、 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: Determination of particle shape Shape index; Part
21、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 9: Assessment of fines Methylene blue test
22、; Part 10: Assessment of fines Grading of filler aggregates (air jet sieving); Part 11: Classification test for the constituents of coarse recycled aggregate. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted
23、without license from IHS-,-,-BS EN 933-8:2012EN 933-8:2012 (E) 4 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, Est
24、onia, Finland, 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. Copyright European Committee for Standardization Provided by
25、IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 933-8:2012EN 933-8:2012 (E) 5 1 Scope This European Standard describes the reference method used for type testing and in case of dispute for the determination of the sand equivalent val
26、ue 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, other methods may be used provided that an appropriate working relationship with the reference method has been established. 2 Normative references Th
27、e 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 of the referenced document (including any amendments) applies. EN 932-2, Tests for general properties of aggregate
28、s 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 properties of aggregates Part 1: Determination of particle size distribution Sieving method EN 933-2, Tests for geometrical
29、properties of aggregates Part 2: Determination of particle size distribution Test sieves, nominal size of apertures EN 1097-5, Tests for mechanical and physical properties of aggregates Part 5: Determination of the water content by drying in a ventilated oven 3 Terms and definitions For the purposes
30、 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 laboratory sample sample intended for laboratory testing 3.3 particle size fraction (di/Di) fraction of an aggregate passing the larger (Di) of two sieve
31、s 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 portion sample used as a whole in a single test Copyright European Committee for Standardization Provided by IHS under license with CENNot for Resale
32、No reproduction or networking permitted without license from IHS-,-,-BS EN 933-8:2012EN 933-8:2012 (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 a maximum fines
33、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 then irrigated usin
34、g 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 Reagents 5.1 Concentrat
35、ed 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 2) g of crystal
36、line 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 or demineralised
37、 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 (bleach) with 2,6 % ac
38、tive 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 concentrate
39、d 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 preparation or if it is c
40、loudy 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. 6.2 Two graduated cylinders, of glass or clear plastic (see Figure 1) complete with rubber bungs and with the following dimensions: Copyright Eur
41、opean Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 933-8:2012EN 933-8:2012 (E) 7 a) wall thickness, about 3 mm; b) inside diameter (32,0 0,5) mm; c) height (430,00 0,25) mm. Each cylinder
42、shall be clearly marked in two positions: d) at (100,00 0,25) mm from the base; and e) at (380,00 0,25) mm from the base. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 93
43、3-8:2012EN 933-8:2012 (E) 8 Dimensions in millimetres 1 Circle mark Figure 1 Graduated cylinder 6.3 Test plunger assembly (see Figure 2) comprising: a) a rod (440,00 0,25) mm long; b) an end piece (25,0 0,1) mm diameter, its lower surface being flat, smooth and perpendicular to the rod axis and whic
44、h includes three guides at the side for centring the plunger in the cylinder, leaving a small clearance; c) a collar, (10,0 0,1) mm thick, suitable for use with the graduated cylinder, acting as a guide for the rod and, at the same time, used to indicate the distance the test plunger is inserted ins
45、ide the Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN 933-8:2012EN 933-8:2012 (E) 9 cylinder; the collar shall include a screw which enables it to be locked onto the rod
46、of the test plunger and the collar shall also have a slot for a rule; d) a plunger head, fixed to the upper end of the rod, to give the test plunger assembly, excluding the collar, a total mass of (1,00 0,01) kg. The immersed parts of the plunger assembly shall be made from non-corrodible metal. NOT
47、E Before first use of a test plunger or a graduated cylinder, the plunger assembly should be placed in the empty cylinder. With the collar resting on the rim of the cylinder, the distance between the upper face of the collar and the lower face of the plunger head should not exceed 0,5 mm. If this cl
48、earance exceeds 0,5 mm or if the end piece does not reach the bottom of the cylinder, this combination of test plunger and graduated cylinder should not be used. 6.4 Stop clock(s), readable to 1 s. 6.5 500 mm rule, graduated in millimetres. 6.6 Test sieves, 0,063 and 2 mm conforming to EN 933-2 with, if necessary, a guard sieve. 6.7 Sieve brush. 6.8 Spatula. 6.9 Washing tube (see Figure 3), comprising a rigid tube of non-corrodible metal with
