《BS-EN-196-1-1995.pdf》由会员分享,可在线阅读,更多相关《BS-EN-196-1-1995.pdf(28页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS EN 196-1:1995 Methods of testing cement Part 1: Determination of strength The European Standard EN 196-1:1994 has the status of a British Standard Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 196-1:1995 This Brit
2、ish Standard, having been prepared under the direction of the Technical Committee B/516, was published under the authority of the Standards Board and comes into effect on 15 March 1995 BSI 04-1999 The following BSI references relate to the work on this standard: Committee reference B/516 Special ann
3、ouncement in BSI News December 1992 ISBN 0 580 21485 0 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: AustriaOesterreichisches Normungs
4、institut BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation franaise de normalisation GermanyDeutsches Institut fr Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnological Institute of Iceland I
5、relandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxembourgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portugus da Qualidade SpainAsociacin Espaola de Normalizacin y C
6、ertificacin SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:30 GMT+00:00 2006, Uncontrolled Co
7、py, (c) BSI BS EN 196-1:1995 BSI 04-1999i Contents Page Cooperating organizationsInside front cover National forewordii Foreword2 Text of EN 196-15 National annex NA (normative) CEN Standard sand21 National annex NB (normative) Alternative compaction procedure21 National annex NC (normative) Verific
8、ation of the mass requirements for the jolting table22 National annex ND (informative) Recommendations for carrying out the test procedure in the UK22 National annex NE (informative) Committees responsibleInside back cover National annex NF (informative) Cross-referencesInside back cover Licensed Co
9、py: sheffieldun sheffieldun, na, Tue Nov 07 09:42:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 196-1:1995 ii BSI 04-1999 National foreword This British Standard has been prepared under the direction of the Technical Committee B/516, Cement and lime. It is the English language version of EN 19
10、6-1:1994 Methods of testing cement Part 1: Determination of strength published by the European Committee for Standardization (CEN). EN 196-1 was drawn up by CEN Technical Committee 51, Cement and building limes, as Part 1 of a series on testing cement which was originally accepted by CEN on 15 Novem
11、ber 1985 and made available on 12 May 1987. The UK gave a negative vote at the final voting stage and, under the CEN Rules then in force, was not obliged to implement this Part. A second formal vote was taken in November 1992 when the UK again gave a negative vote but, under the CEN Rules now in for
12、ce, is obliged to implement this Part. The method described in this standard is that referred to as the ISO mortar prism test in the foreword to BS 4550-3.1:1978. Prisms of 40 mm square cross section are cast from a 1 : 3 mortar and broken in flexure after 28 days curing. The two halves are then tes
13、ted for compressive strength. This method has been referred to for the determination of strength in the 1991 revisions of the specifications for cement in BS 12, BS 146, BS 4027, BS 4246, BS 6588 and BS 6610 and in the 1992 first edition of BS 7583, all of which are based on the European Prestandard
14、 ENV 197-1. However, BS 4550-3.4:1978 on the determination of cement strength using concrete or mortar cubes will not be withdrawn until November 1994 to allow these methods to be used in support of the specifications in BS 915, BS 1370 and BS 4248 until these are also revised. EN 196-1 specifies th
15、e reference procedure for the preparation and testing of mortar prisms made with CEN Standard sands from various sources and compacted by a standard jolting apparatus but permits the use of alternative compaction equipment and procedures in well defined cases; National annex NA, National annex NB an
16、d National annex NC give the requirements for UK purposes for CEN Standard sand, for the alternative compaction procedure and for the verification of the mass requirements for the jolting table, respectively. A British Standard does not purport to include all the necessary provisions of a contract.
17、Users of British Standards are responsible for their correct application. 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 22, an
18、inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:30 GMT+00:00 2006, Uncontrolled Copy
19、, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 196-1 December 1994 ICS 91.100.10Supersedes EN 196-1:1987 Descriptors: Cements, mortars (materials), composition: property, tests, compressive strength, flexural strength, conformity tests, specimen preparation, test equipment, certifica
20、tion English version Methods of testing cement Part 1: Determination of strength Mthodes dessais des ciments Partie 1: Dtermination des rsistances mcaniques Prfverfahren fr Zement Teil 1: Bestimmung der Festigkeit This European Standard was approved by CEN on 1994-12-12. CEN members are bound to com
21、ply with the CEN/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 Se
22、cretariat or to any 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 of
23、ficial versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen d
24、e Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 196-1:1994 E Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 196-1:1994 BSI 04-1999
25、 2 Foreword This European Standard was drawn up by the Technical Committee CEN/TC 51, Cement and building limes, the Secretariat of which is held by IBN. The standard EN 196 on methods of testing cement consists of the following Parts: EN 196-1, Methods of testing cement Part 1: Determination of str
26、ength. EN 196-2, Methods of testing cement Part 2: Chemical analysis of cement. EN 196-3, Methods of testing cement Part 3: Determination of setting time and soundness. ENV 196-4, Methods of testing cement Part 4: Quantitative determination of constituents. EN 196-5, Methods of testing cement Part 5
27、: Pozzolanicity test for pozzolanic cements. EN 196-6, Methods of testing cement Part 6: Determination of fineness. EN 196-7, Methods of testing cement Part 7: Methods of taking and preparing samples of cement. EN 196-21, Methods of testing cement Part 21: Determination of the chloride, carbon dioxi
28、de and alkali content of cement. 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 June 1995, and conflicting national standards shall be withdrawn at the latest by June 1995. This European Standard
29、 supersedes EN 196-1:1987. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzer
30、land, United Kingdom. Contents Page Foreword2 1Scope5 2Normative references5 3Principle5 4Laboratory and equipment5 4.1Laboratory5 4.2General requirements for the equipment6 4.3Test sieves6 4.4Mixer6 4.5Moulds6 4.6Jolting apparatus11 4.7Flexural strength testing machine11 4.8Compressive strength tes
31、ting machine12 4.9Jig for compressive strength testing machine13 5Mortar constituents13 5.1Sand13 5.2Cement14 5.3Water14 6Preparation of mortar14 6.1Composition of the mortar14 6.2Batching of mortar15 6.3Mixing of mortar15 7Preparation of test specimens15 7.1Size of specimens15 7.2Moulding of test s
32、pecimens15 8Curing of test specimens15 8.1Handling and storage before demoulding15 8.2Demoulding of specimens15 8.3Curing of specimens in water15 8.4Age of specimens for strength tests16 9Testing the specimens16 9.1The testing procedures16 9.2Flexural strength16 9.3Compressive strength16 10Conformit
33、y testing of cement16 10.1 General16 10.2 Definition of test result17 10.3 Calculation of test result17 10.4 Reporting of results17 10.5 Measures of the precision of the method17 10.6 Reproducibility17 Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:30 GMT+00:00 2006, Uncontrolled Copy,
34、 (c) BSI EN 196-1:1994 BSI 04-19993 Page 11Acceptance testing of sand and of alternative equipment17 11.1 General17 11.2 Definition of test result17 11.3 Calculation of test result17 11.4 Precision of the test method17 11.5 Repeatability18 11.6 CEN Standard sands18 11.7 Acceptance testing of alterna
35、tive compaction equipment19 Figure 1 Bowl and blade7 Figure 2 Typical mould8 Figure 3 Typical spreaders and metal straightedge9 Figure 4 Typical jolting apparatus10 Figure 5 Arrangement of loading for determination of flexural strength12 Figure 6 Typical jig for compressive strength testing14 Table
36、1 Aperture of test sieves6 Table 2 Speeds of mixer blade6 Table 3 Particle size distribution of the CEN Reference sand13 Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:30 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 4 blank Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 09:42:30
37、GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 196-1:1994 BSI 04-19995 1 Scope This European Standard describes a method of determining the compressive and flexural strengths of cement mortar. This standard describes the reference procedure; it allows the use of alternative procedures only in well de
38、fined cases provided that they do not affect the results significantly as specified in clause 11. In the event of a dispute, only the reference procedure described in this standard is used, excluding any alternatives. The method applies to the cement types defined in ENV 197-1. It may not be applica
39、ble to other cement types, for instance on account of their initial setting time. 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 and the publicati
40、ons 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. ENV 197-1:1992,
41、Cement Composition, specifications and conformity criteria Part 1: Common cements. ISO 409-1:1982, Metallic materials Hardness test Tables of Vickers hardness values for use in tests made on flat surfaces Part 1: HV 5 to HV 100. ISO 565:1990, Test sieves Woven metal wire cloth, perforated metal plat
42、e and electroformed sheet Nominal sizes of openings. ISO 1101:1983, Technical drawings Geometrical tolerancing Tolerancing of form, orientation, location and run-out Generalities, definitions, symbols, indications on drawings. ISO 1302:1992, Technical drawings Method of indicating surface texture. I
43、SO 2591-1:1988, Test sieving Part 1: Methods using test sieves of woven wire cloth and perforated metal plate. ISO 3310-1:1990, Test sieves Technical requirements and testing Part 1: Test sieves of metal wire cloth. ISO 4200:1991, Plain end steel tubes, welded and seamless General tables of dimensio
44、ns and masses per unit length. ISO 6507-1:1982, Metallic materials Hardness test Vickers test Part 1: HV 5 to HV 100. 3 Principle The method comprises the determination of the compressive, and optionally the flexural, strength of prismatic test specimens 40 mm 40 mm 160 mm in size. These specimens a
45、re cast from a batch of plastic mortar containing one part by mass of cement and three parts by mass of standard sand with a water/cement ratio of 0,50. Standard sands from various sources and countries may be used provided that they have been shown to give cement strength results which do not diffe
46、r significantly from those obtained using the CEN Reference sand (see clause 11). The mortar is prepared by mechanical mixing and is compacted in a mould using a standard jolting apparatus. Alternative compaction equipment and techniques may be used provided that they have been shown to give cement
47、strength results which do not differ significantly from those obtained using the standard jolting apparatus (see clause 11). The specimens in the mould are stored in a moist atmosphere for 24 h and then the demoulded specimens are stored under water until strength testing. At the required age, the s
48、pecimens are taken from their wet storage, broken in flexure into two halves and each half tested for strength in compression. 4 Laboratory and equipment 4.1 Laboratory The laboratory where preparation of specimens takes place shall be maintained at a temperature of (20 2) C and a relative humidity
49、of not less than 50 %. The moist air room or the large cabinet for storage of the specimens in the mould shall be continuously maintained at a temperature of (20 1) C and a relative humidity of not less than 90 %. The temperature of the water in the storage containers shall be maintained at (20 1) C. The temperature and relative humidity of the air in the laboratory and the temperature of the storage containers shall be recorded at least once a day during working hours
链接地址:https://www.31doc.com/p-3740245.html