1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Part 48: Test method for the determination of degree of pulverizationThe European Standard EN 13286
2、-48:2005 has the status of a British StandardICS 93.080.20Unbound and hydraulically bound mixtures BRITISH STANDARDBS EN 13286-48:2005BS EN 13286-48:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2005 BSI 30 September 2005IS
3、BN 0 580 46010 XA list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled
4、“International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with
5、a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 6, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the doc
6、ument was last issued.Amendments issued since publicationAmd. No. Date Comments aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related internationa
7、l and European developments and promulgate them in the UK.National forewordThis British Standard is the official English language version of EN 13286-48:2005. The UK participation in its preparation was entrusted by Technical Committee B/510, Road materials, to Subcommittee B/510/4, Cementitious bou
8、nd materials, unbound granular materials, waste materials and marginal materials, which has the responsibility to:EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 13286-48August 2005ICS 93.080.20English versionUnbound and hydraulically bound mixtures - Part 48: TestGraves traites aux liants hydraul
9、iques et graves nontraites - Partie 48: Mthode dessai pour la dterminationdu degr de pulvrisationUngebundene und hydraulisch gebundene Gemische - Teil48: Prfverfahren zur Bestimmung desPulverisierungsgradesThis European Standard was approved by CEN on 27 June 2005.CEN members are bound to comply wit
10、h the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat
11、 or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversi
12、ons.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerla
13、nd and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13286
14、-48:2005: Emethod for the determination of degree of pulverizationEN 13286-48:2005 (E) 2 Contents Page Foreword 3 1 Scope .5 2 Principle.5 3 Apparatus 5 4 Procedure 5 5 Calculation and expression of results.6 6 Test report .6 EN 13286-48:2005 (E) 3 Foreword This European Standard (EN 13286-48:2005)
15、has been prepared by Technical Committee CEN/TC 227 “Road mixtures”, the secretariat of which is held by DIN. 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 2006, and conflicting nationa
16、l standards shall be withdrawn at the latest by February 2006. This European Standard is one of a series of standards as listed below. EN 13286-1, Unbound and hydraulically bound mixtures - Part 1: Test methods for laboratory reference density and water content - Introduction, general requirements a
17、nd sampling. EN 13286-2, Unbound and hydraulically bound mixtures - Part 2: Test methods for laboratory reference density and water content - Proctor compaction. EN 13286-3, Unbound and hydraulically bound mixtures - Part 3: Test methods for laboratory reference density and water content - Vibrocomp
18、ression with controlled parameters. EN 13286-4, Unbound and hydraulically bound mixtures - Part 4: Test methods for laboratory reference density and water content - Vibrating hammer. EN 13286-5, Unbound and hydraulically bound mixtures - Part 5: Test methods for laboratory reference density and wate
19、r content - Vibrating table. EN 13286-7, Unbound and hydraulically bound mixtures - Part 7: Cyclic load triaxial test for unbound mixtures. EN 13286-40, Unbound and hydraulically bound mixtures - Part 40: Test method for the determination of the direct tensile strength of hydraulically bound mixture
20、s. EN 13286-41, Unbound and hydraulically bound mixtures - Part 41: Test method for the determination of the compressive strength of hydraulically bound mixtures. EN 13286-42, Unbound and hydraulically bound mixtures - Part 42: Test method for the determination of the indirect tensile strength of hy
21、draulically bound mixtures. EN 13286-43, Unbound and hydraulically bound mixtures - Part 43: Test method for the determination of the modulus of elasticity of hydraulically bound mixtures. EN 13286-44, Unbound and hydraulically bound mixtures - Part 44: Test methods for binder activity - Determinati
22、on of alpha coefficient of vitrified blast furnace slag. EN 13286-45, Unbound and hydraulically bound mixtures - Part 45: Test method for the determination of the workability period of hydraulically bound mixtures. EN 13286-46, Unbound and hydraulically bound mixtures - Part 46: Test method for the
23、determination of the moisture condition value. EN 13286-47, Unbound and hydraulically bound mixtures - Part 47: Test method for the determination of California bearing ratio, immediate bearing index and linear swelling. EN 13286-48, Unbound and hydraulically bound mixtures - Part 48: Test method for
24、 the determination of degree of pulverisation. EN 13286-48:2005 (E) 4 EN 13286-49, Unbound and hydraulically bound mixtures - Part 49: Accelerated swelling test for soil treated by lime and/or hydraulic binder. EN 13286-50, Unbound and hydraulically bound mixtures - Part 50: Method for the manufactu
25、re of test specimens of hydraulically bound mixtures using Proctor equipment or vibrating table compaction. EN 13286-51, Unbound and hydraulically bound mixtures - Part 51: Methods for the manufacture of test specimens of hydraulically bound mixtures by vibrating hammer compaction. EN 13286-52, Unbo
26、und and hydraulically bound mixtures - Part 52: Method for the manufacture of test specimens of hydraulically bound mixtures using vibrocompression. EN 13286-53, Unbound and hydraulically bound mixtures - Part 53: Methods for the manufacture of test specimens of hydraulically bound mixtures using ax
27、ial compression. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
28、Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 13286-48:2005 (E) 5 1 Scope This European Standard specifies a test method for the determination of the degree of pulverization of cohesive materi
29、al after mixing with lime and/or hydraulic binder. 2 Principle After mixing and before any compaction, a sample of mixture of known mass is gently shaken on a 5,6 mm sieve, ensuring that the individual lumps of cohesive material are broken as little as possible, and the mass of mixture retained on t
30、he sieve is determined. The lumps of mixture retained on the sieve are broken until all particles finer than 5,6 mm pass the sieve. The mass of mixture retained on the sieve is determined. The degree of pulverization is the ratio of the mass passing the sieve before and after breaking the retained l
31、umps. NOTE The purpose of the test is to measure the effectiveness of mixing and break-down of the cohesive material during mixing. 3 Apparatus 3.1 Balance, of 5 kg minimum capacity, able to measure mass to 1 g. 3.2 5,6 mm test sieve and receiver, of 300 mm minimum diameter. 3.3 Scoop, approximately
32、 125 mm diameter 200 mm in length, excluding the handle. 4 Procedure Using the scoop take a sample of the un-compacted mixture of approximately 1 kg in mass and weigh to the nearest 1 g (m1). NOTE It is essential that individual lumps of mixture are not broken down during sampling and sample reducti
33、on operations. To avoid breaking-down of the mixture during sampling and sample reduction, it is better to use a sample of the mass required for the test rather than obtain a larger sample and then to reduce this to the required mass by sample reduction. Spread the sample onto the sieve, taking care
34、 not to overload it, and shake it gently. Do not force the mixture through the sieve. Ensure that the lumps of mixture are broken as little as possible. Determine the mass of the mixture retained on the sieve to the nearest 1 g (m2). Keeping the mixture over the sieve, break any lumps of the mixture
35、 retained on the sieve until all individual particles finer than 5,6 mm are separated. Shake the sieve until all the mixture finer than 5,6 mm has passed through it. Determine the mass of the mixture that is still retained on the sieve to the nearest 1 g (m3). EN 13286-48:2005 (E) 6 5 Calculation an
36、d expression of results 5.1 Calculate the degree of pulverization p from the equation: ()()3121100mmmmp= (1) where p is the degree of pulverization, in percent (%); m1is the initial mass of sample, in grams (g); m2is themass of mixture retained on the sieve after initial sieving, in grams (g); m3is
37、the mass of mixture retained on the sieve after breaking up the lumps and re-sieving, in grams (g). 5.2 Report the degree of pulverization to the nearest 5 %. 6 Test report The test report shall contain the following information: a) reference to this European Standard, i.e. EN 13286-48; b) type of m
38、ixture; c) origin of the mixture; d) degree of pulverisation of the sample to the nearest 5 %; e) any deviations from this European Standard as well as any incidents that could have an effect on the result. blankBS EN BSI389 Chiswick High RoadLondonW4 4AL13286-48:2005BSI British Standards Institutio
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