1、BRITISH STANDARD BS EN 932-3:1997 Incorporating Amendment No. 1 Tests for general properties of aggregates Part 3: Procedure and terminology for simplified petrographic description The European Standard EN 932-3:1996, with the incorporation of amendment 1:2003, has the status of a British Standard I
2、CS 91.100.20 BS EN 932-3:1997 This British Standard, having been prepared under the direction of the Sector Board for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 15 January 1997 BSI 26 February 2004 The following BSI references re
3、late to the work on this British Standard: Committee reference B/502 Draft for comment 93/105884 DC ISBN 0 580 26797 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee B/502, Aggregates, upon which the following bodies wer
4、e represented: Association of Consulting Engineers Association of Lighweight Aggregate Manufacturers British Aggregate Construction Materials Industries British Cement Association British Iron and Steel Producers Association British Precast Concrete Federation Ltd. British Ready Mixed Concrete Assoc
5、iation Department of the Environment Department of the Environment (Building Research Establishment) Department of Transport (Highways Agency) Electricity Association Institute of Concrete Technology Institution of Civil Engineers Institution of Structural Engineers Sand and Gravel Association Limit
6、ed Society of Chemical Industry The following bodies were also represented in the drafting of the standard, through subcommittees and panels: British Civil Engineering Test Equipment Manufacturers Association County Surveyors Society Department of Trade and Industry (National Measurement Accreditati
7、on Service) Amendments issued since publication Amd. No. Date Comments 14865 26 February 2004 Changes to EN foreword and see national forewordBS EN 932-3:1997 BSI 26 February 2004 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 932-3 3BS EN 932-3:
8、1997 ii BSI 26 February 2004 National foreword This British Standard has been prepared by Technical Committee B/502. It is the English language version of EN 932-3:1996, Tests for general properties of aggregates Part 3: Procedure and terminology for simplified petrographic description, including am
9、endment 1:2003, published by the European Committee for Standardization (CEN). 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
10、 is indicated by !“. It forms part of a group of European Standards dealing with test methods for aggregates which are being developed by CEN/TC 154 to verifiy requirements which will be specified in European Product Standards for aggregates for various end uses. It is the intention that this standa
11、rd will be included in a “package” of European Standards to be declared by CEN/TC 154. It does not replace any current British Standard. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under
12、the section entitled “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 applic
13、ation. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 9 and a back cover. The BSI copyright notice displayed in this document in
14、dicates when the document was last issued.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 932-3 August 1996 +A1 September 2003 ICS 19.120; 91.100.20 Descriptors: Aggregates, tests, characteristics, petrography, rocks, samples, nomenclature English version Tests for general properties of aggrega
15、tes Part 3: Procedure and terminology for simplified petrographic description (includes amendment A1:2003) Essais pour dterminer les proprits gnrales des granulats Partie 3: Procdure et terminologie pour la description ptrographique simplifie (inclut lamendement A1:2003) Prfverfahren fr allgemeine E
16、igenschaften von Gesteinskrnungen Teil 3: Durchfhrung und Terminologie einer vereinfachten petrographischen Beschreibung (enthlt nderung A1:2003) This European Standard was approved by CEN on 1996-07-26; amendment A1 was approved by CEN on 1 August 2003. CEN members are bound to comply with the CEN/
17、CENELEC Internal Regulations which stipulate 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 Central Secretariat or to a
18、ny CEN member. This European 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 Central Secretariat has the same status as the official versions.
19、CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standa
20、rdization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1996 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members. Ref. No. EN 932-3:1996 + A1:2003 EEN 932-3
21、:1996 BSI 26 February 2004 2 Foreword This European Standard 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 endorsement
22、, at the latest by February 1997, and conflicting national standards shall be withdrawn at the latest by June 2004. This European Standard is one of a series of standards for tests for general properties of aggregates as listed below. EN 932-1, Tests for general properties of aggregates Part 1: Meth
23、ods for sampling. 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 932-6, Tests for general properties of aggregates Part 6: Definitions of repeatabi
24、lity and reproducibility. Test methods for other properties of aggregates are covered by parts of the following European Standards: 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 p
25、roperties of aggregates; EN 1744, Tests for chemical properties of aggregates. References specific to the petrographic examination are given in the Bibliography. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement
26、this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Foreword to amendment A1 This document EN 932-3:1996/A1:2003 has been prepared by Technical Comm
27、ittee 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 March 2004, and conflicting national standards shall be withdrawn at the late
28、st by March 2004. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembour
29、g, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 1S c o p e 3 2 Normative references 3 3 Definitions 3 4 Apparatus 3 5S a m p l i n g 4 6 Description of a rock sample 4 7 Description of an aggregate sample 5 8 Test report
30、6 Annex A (informative) Nomenclature 7 Bibliography 9 Table 1 Relationship between largest particle size D and minimum sample mass Q 4EN 932-3:1996 BSI 26 February 2004 3 1 Scope This European Standard specifies a basic procedure for the petrographic examination of aggregates for the purposes of gen
31、eral classification. The procedure is not suitable for the detailed petrographical study of aggregates for specific end uses. NOTE The examination should be carried out by a qualified geologist (petrographer), with experience of materials used in civil engineering. This European Standard covers only
32、 natural aggregates, sand and gravel or crushed rock aggregate as well as their source materials. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text a
33、nd the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies.
34、 EN 932-1, Tests for general properties of aggregates Part 1: Methods for sampling. 3 Definitions For the purposes of this standard, the following definitions apply. NOTE Rocks can be classified into three major divisions, according to their origin: igneous, sedimentary and metamorphic. 3.1 igneous
35、rocks rocks formed from molten rock (magma) either at or below the earths surface. Those formed below can be divided into two classes, plutonic and hypabyssal. Plutonic rocks are formed at depth in large bodies and typically have a coarse crystalline texture, with crystals clearly visible to the nak
36、ed eye. Hypabyssal rocks are formed in smaller bodies near, but not at, the earths surface and have a fine crystalline texture. Extrusive or volcanic rocks are formed as lavas and pyroclastics at the earths surface and have a very fine or glassy texture 3.2 sedimentary rocks rocks formed at the eart
37、hs surface by the accumulation, or precipitation, of the products of weathering and erosion of existing rocks. They can also be formed by the accumulation of organic debris. Such accumulated material can remain unconsolidated or it can be lithified into rock. Sedimentary rocks are usually layered 3.
38、3 metamorphic rocks rocks formed from pre-existing rocks by the action of heat and/or pressure in the earths crust, which has caused mineralogical and structural transformations. Metamorphic rocks frequently have anisotropic texture 4 Apparatus 4.1 Handlens. 4.2 Pen knife. 4.3 Stereoscopic microscop
39、e, (magnification: typically 10 to 100). 4.4 Polarizing microscope. 4.5 Reagent, diluted hydrochloric acid.EN 932-3:1996 4 BSI 26 February 2004 5 Sampling The sample to be examined can comprise material from drill cores, aggregate from stock piles, or the exposed faces of quarries. In order to ensur
40、e that the sample is representative, it shall be selected in accordance with a recognized sampling procedure. In the case of a rock sample, the mass of material delivered for the examination shall be not less than 5 kg. In the case of aggregates, the minimum sample mass Q delivered for examination d
41、epends on the largest particle size D, and shall be as given in Table 1. Table 1 Relationship between largest particle size D and minimum sample mass Q For aggregates, the sample used for the examination shall be taken in accordance with the procedures described in EN 932-1. 6 Description of a rock
42、sample 6.1 Examination The sample shall be first subjected to a visual examination to determine the constituent rock or mineral types. It may be appropriate to wash the sample. Each rock type shall then be carefully inspected using a handlens or a stereoscopic microscope and other appropriate means.
43、 NOTE 1 If necessary, where appropriate, thin sections should be examined using a polarizing microscope (more than one section can be necessary if the rock is coarse-grained or heterogeneous). NOTE 2 Some physical properties, like density or ultrasonic pulse velocity, can also be usefully determined
44、. The description shall also include comments on the following: a) grain size of the main constituents, texture, anisotropy, porosity, vesicularity (in volcanic rocks), colour; b) mineralogical composition (quartz, feldspars, calcite, dolomite, etc.) and approximate determination of their respective
45、 proportions; c) state of alteration and weathering. NOTE 3 The description can also include comments on the presence, even in small quantities, of some constituents which can be of concern in particular circumstances (such as opal, micas or other phyllosilicates, sulfates, iron sulfides and organic
46、 materials). 6.2 Nomenclature From the examination specified in 6.1, assign, if possible, an appropriate name to the rock, preferably selected from the nomenclature given in Annex A. Largest particle size D Minimum sample mass Q (mm) (kg) 31,5 D u 63 50 16 D u 31,5 25 8 D u 16 8 4 D u 82 u 4 0,5EN 9
47、32-3:1996 BSI 26 February 2004 5 7 Description of an aggregate sample 7.1 General Aggregates derived from natural deposits consist mainly of: a) mineral particles; and b) rock fragments. The method of description and the nomenclature described in 7.2 and 7.3 shall be used only for particle sizes bet
48、ween 0,1 mm and 63 mm. It may be appropriate to wash the sample. NOTE The composition of aggregates often varies between size fractions. Hence, before carrying out the examination, it may be necessary to divide the aggregate into closely sized fractions which can be examined separately. The proporti
49、ons of constituents can then be estimated by counting the particles in size fractions. 7.2 Examination The description of the sample (or grain size fraction) shall include: a) brief information about the shape, surface conditions (roughness etc.) and roundness of particles; b) a petrographic identification based on counting a sufficiently representative number of particles. !NOTE In the case of heterogeneous aggregates, the test sample should comprise a m
