BS EN 413-2-2016 Masonry cement Test methods《砌筑水泥 第2部分 试验方法》.pdf

1、BS EN 413-2:2016Masonry cementPart 2: Test methodsBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 413-2:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 413-2:2016.It supersedes BS EN 413-2:2005 which is withdrawn.The U

2、K participation in its preparation was entrusted to TechnicalCommittee B/516/10, Masonry cement.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 responsib

3、le for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 92162 9ICS 91.100.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Poli

4、cy and Strategy Committee on 31 October 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 413-2:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 413-2 October 2016 ICS 91.100.10 Supersedes EN 413-2:2005English Version Masonry cement - Part 2: Test methods C

5、iment maonner - Partie 2 : Mthodes dessai Putz- und Mauerbinder - Teil 2: Prfverfahren This European Standard was approved by CEN on 18 June 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of

6、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 versions (English, French, German).

7、 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 Austria, Belgium, Bulgaria, Croatia, Cy

8、prus, 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, Sweden, Switzerland, Turkey and United K

9、ingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 413-

10、2:2016 EBS EN 413-2:2016EN 413-2:2016 (E) 2 Contents PageEuropean foreword . 4 Introduction 5 1 Scope 6 2 Normative references 6 3 General requirements for testing 6 3.1 Laboratory . 6 3.2 Manufacturing tolerances for test equipment 6 3.2.1 Dimensions 6 3.2.2 Mass 6 3.3 Tolerances for test equipment

11、 in use 6 3.4 Number of tests 7 4 Determination of setting time 7 4.1 General 7 4.2 Method A . 7 4.3 Method B . 7 4.3.1 Test principle 7 4.3.2 Initial setting time procedure . 7 4.3.3 Report initial setting time . 8 4.3.4 Final setting time procedure . 8 4.3.5 Report final setting time 8 4.3.6 Repea

12、tability and reproducibility . 8 5 Preparation of standard mortar 8 5.1 Principle . 8 5.2 Consistence of fresh mortar by plunger apparatus (reference method) 8 5.2.1 Apparatus . 8 5.2.2 Procedure . 9 5.2.3 Reproducibility 9 5.3 Consistence of fresh mortar by flow table (alternative method) 9 5.3.1 M

13、ethod 9 5.3.2 Apparatus . 9 5.3.3 Calibration . 9 5.3.4 Procedure 10 6 Determination of water retention 10 6.1 Principle 10 6.2 Preparation 10 6.3 Apparatus 12 6.4 Procedure 13 6.5 Repeatability and reproducibility 13 7 Determination of air content . 14 7.1 General . 14 7.2 Pressure method (referenc

14、e method) 14 7.2.1 Principle 14 7.2.2 Apparatus 14 7.2.3 Calibration 14 BS EN 413-2:2016 EN 413-2:2016 (E) 3 7.2.4 Procedure 15 7.2.5 Repeatability and reproducibility 15 7.3 Alcohol method (alternative method) 16 7.3.1 Principle 16 7.3.2 Apparatus 16 7.3.3 Procedure 16 Bibliography . 18 BS EN 413-2

15、:2016EN 413-2:2016 (E) 4 European foreword This document (EN 413-2:2016) has been prepared by Technical Committee CEN/TC 51 “Cement and building limes”, the secretariat of which is held by NBN. This European Standard shall be given the status of a national standard, either by publication of an ident

16、ical text or by endorsement, at the latest by February 2017, and conflicting national standards shall be withdrawn at the latest by February 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible f

17、or identifying any or all such patent rights. This document supersedes EN 413-2:2005. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. EN 413, Masonry cement, consists of the following parts: Part 1: Composition, specifi

18、cations and conformity criteria; Part 2: Test methods. The main differences between this document and EN 413-2:2005 are: updating of normative references; revised guidance on the properties of gauzes used in the water retention test; revised repeatability and reproducibility limits for setting time(

19、Method B), water retention and air content (these revisions are based on a round-robin test programme instituted following the introduction of a new class of Masonry cement MC 22,5 into EN 413-1). According to the CEN-CENELEC Internal Regulations, the national standards organisations of the followin

20、g 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, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norw

21、ay, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 413-2:2016 EN 413-2:2016 (E) 5 Introduction This European Standard includes additional test methods to those described in the EN 196 series, Methods of testing cement, that enable the

22、performance of masonry cement to be assessed when used in mortar for bedding masonry units and for rendering and plastering. BS EN 413-2:2016EN 413-2:2016 (E) 6 1 Scope This European Standard describes reference and alternative test methods to be used when testing masonry cements to assess their con

23、formity to EN 413-1. It gives the tests on fresh mortar for consistence, water retention and air content. In the event of a dispute, only the reference methods are used. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispens

24、able for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 196-1, Methods of testing cement - Part 1: Determination of strength EN 196-3:2005+A1:2008, Methods of testing

25、cement - Part 3: Determination of setting times and soundness EN 459-2:2010, Building lime - Part 2: Test methods 3 General requirements for testing 3.1 Laboratory Unless specifically stated to the contrary, all the tests described in this document shall be carried out in a laboratory where the air

26、temperature is maintained at (20 2) C and the relative humidity at not less than 50 %. 3.2 Manufacturing tolerances for test equipment 3.2.1 Dimensions Figures indicating the specified requirements for apparatus used in the tests described in this document shall include essential dimensions for whic

27、h manufacturing tolerances are given. Unless otherwise stated, tolerance class m according to EN 22768-1 should be applied. NOTE Other dimensions are given for guidance. 3.2.2 Mass Specified masses shall have manufacturing tolerances within 1 % of the mass unless otherwise stated. 3.3 Tolerances for

28、 test equipment in use Tolerances applying to apparatus, which has been subjected to wear in use shall not exceed twice the corresponding manufacturing tolerance unless alternative requirements are specified. BS EN 413-2:2016 EN 413-2:2016 (E) 7 3.4 Number of tests Where the test is one of a series

29、subject to statistical control, determination of each property by a single test shall be the minimum required. Where the test is not part of a series subject to statistical control, two tests shall be performed to determine each property. 4 Determination of setting time 4.1 General The setting time

30、is determined by observing the penetration of a needle into a cement paste of standard consistence until it reaches a specified value. The setting time is determined in accordance with either method A (4.2) or method B (4.3). Method B is the reference method. 4.2 Method A The setting time is determi

31、ned in accordance with EN 196-3. NOTE Experience has shown that the method specified in EN 1963, in which the specimens are tested under water, is not suitable for some masonry cements which have low clinker contents. 4.3 Method B 4.3.1 Test principle The equipment used and the specimen preparation

32、procedures are as described in EN 196-3 but with the additional requirement for a room or a humidity cabinet of adequate size and maintained at (20 1) C and not less than 90 % relative humidity. 4.3.2 Initial setting time procedure Calibrate the Vicat apparatus with the needle, attached in advance o

33、f the test, by lowering the needle to rest on the base-plate to be used and adjusting the pointer to read zero on the scale. Raise the needle to the stand-by position. Fill a Vicat mould in accordance with EN 196-3:2005+A1:2008, 5.2.2 with paste of standard consistence mixed in accordance with EN 19

34、6-3:2005+A1:2008, 5.2.1 Place the filled mould and base-plate in the room or humidity cabinet and after a suitable time, position the mould and base-plate under the needle of the Vicat apparatus. Lower the needle gently until it is in contact with the paste. Pause in that position for between 1 s an

35、d 2 s in order to avoid initial velocity or forced acceleration of the moving parts. Then release the moving parts quickly and allow the needle to penetrate vertically into the paste. Read the scale when penetration has ceased, or 30 s after the release of the needle, whichever is the earlier. Recor

36、d the scale reading, which indicates the distance between the end of the needle and the base-plate, together with the time from zero. Repeat the penetration on the same specimen at conveniently spaced positions, not less than 8 mm from the rim of the mould or 5mm from each other and at least 10 mm f

37、rom the last penetration position, at conveniently spaced intervals of time, e.g. at 10 min intervals. Between penetrations keep the specimen in a room or humidity cabinet. Clean the Vicat needle immediately after each penetration. Retain the specimen if determination of the final setting time is to

38、 be made. BS EN 413-2:2016EN 413-2:2016 (E) 8 4.3.3 Report initial setting time Report the elapsed time measured from zero to the time at which the distance between the needle and the base-plate is (6 3) mm as the initial setting time of the cement to the nearest 5 min. If the initial setting time e

39、xceeds 6h determine the final setting time. 4.3.4 Final setting time procedure Invert the filled mould and follow the procedure described in EN 196-3:2005+A1:2008, 6.3 with the specimen held in the room or humidity cabinet at controlled humidity rather than under water. 4.3.5 Report final setting ti

40、me Report the elapsed time measured from zero to that at which the needle first penetrates only 0,5 mm into the specimen as the final setting time of the cement, to the nearest 15 min. 4.3.6 Repeatability and reproducibility The standard deviation of repeatability is 4 min for initial setting time a

41、nd 7 min for final setting time. The standard deviation of reproducibility is 20 min for initial setting time and 24 min for final setting time. These precision data take into account uncertainty of measurement. 5 Preparation of standard mortar 5.1 Principle The properties of fresh mortar made with

42、masonry cement are assessed on standard mortar prepared in accordance with EN 196-1, but with the water content necessary for the standard consistence. The consistence is measured using the plunger apparatus (see 5.2) as the reference method to achieve the required value of penetration. A flow table

43、 test (see 5.3) is allowed as an alternative to the plunger test but it is important that the flow table spread equivalent to the required value of penetration is established, using the same type of masonry cement as that which shall be tested. 5.2 Consistence of fresh mortar by plunger apparatus (r

44、eference method) 5.2.1 Apparatus The mixer and ancillary equipment shall be as described in EN 196-1. The plunger apparatus shown in Figure 1 shall conform to the dimensions specified. The shape of the baseplate (1) shall enable the mortar container (8) to be placed centrally below the plunger (7).

45、The plunger shall have a hemispherical lower end, be resistant to corrosion and not attacked by mortar. The total mass of the rod (6) and plunger (7) shall be (90 2) g. A release mechanism (5) holds the measuring rod in its initial position so that the lower end of the plunger is (100 0,5) mm above

46、the mortar surface prior to commencing the test (the initial position in 5.2.2). The tamper (see Figure 2) shall consist of a round rod made of impermeable material with sheet metal protection and shall weigh (250 15) g. BS EN 413-2:2016 EN 413-2:2016 (E) 9 5.2.2 Procedure Prepare the mortar accordi

47、ng to the procedure described in EN 196-1 except that the water content shall be that determined to give the consistence required. Before the start of each test wipe the plunger with a damp cloth. Fill the container in two layers immediately after completing the mixing procedure. Compact each layer

48、with 10 light strokes of the tamper. Strike off the excess mortar, within 1 min of completion of mixing, by a gentle sawing action using the straightedge held at an angle of about 45 degrees. Then at a slightly flatter angle smooth the surface in a single direction in the reverse direction. After pl

49、acing the container on the base-plate, release the plunger from its initial position (150 15) s after the completion of mixing and determine the value of penetration into the mortar by reading the scale. A value of penetration of (35 3) mm is required for the mortar to be of standard consistence. If the mortar does not achieve the standard consistence required then mix a new batch of mortar using a different quantity of water. Repeat the test on new batches of mortar until the value of penetration of (35 3) mm is obtained in two consecu