EN 196-3-2016 en Methods of testing cement - Part 3 Determination of setting times and soundness《水泥试验方法-第3部分 凝结时间和安定性的测定》.pdf

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1、BS EN 196-3:2016Methods of testing cementPart 3: Determination of setting times andsoundnessBSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 196-3:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 196-3:2016. It supersede

2、s BS EN 196-3:2005+A1:2008 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee B/516, Cement and lime.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the nec

3、essary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 93547 3 ICS 91.100.10 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standar

4、d was published under the authority of the Standards Policy and Strategy Committee on 31 December 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 196-3:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 196-3 November 2016 ICS 91.100.10 Supersedes EN 196-3:

5、2005+A1:2008English Version Methods of testing cement - Part 3: Determination of setting times and soundness Mthodes dessai des ciments - Partie 3 : Dtermination du temps de prise et de la stabilit Prfverfahren fr Zement - Teil 3: Bestimmung der Erstarrungszeiten und der Raumbestndigkeit This Europe

6、an Standard was approved by CEN on 5 September 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 a national standard without any alteration. Up-to-date lists and bibliographical references co

7、ncerning 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). A version in any other language made by translation under the responsibility of a CEN member

8、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, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France

9、, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMIT

10、EE 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 196-3:2016 EBS EN 196-3:2016EN 196-3:2016 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Nor

11、mative references 4 3 Principles . 4 4 Laboratory, equipment and materials 4 4.1 Laboratory . 4 4.2 Equipment and materials . 5 5 Standard consistence test 5 5.1 Apparatus . 5 5.2 Procedure. 6 5.2.1 Mixing the cement paste . 6 5.2.2 Filling the mould 8 5.2.3 Determination of standard consistence 8 6

12、 Setting time test . 8 6.1 Apparatus . 8 6.2 Determination of initial setting time . 9 6.2.1 Procedure. 9 6.2.2 Report 9 6.3 Determination of final setting time . 10 6.3.1 Procedure 10 6.3.2 Report . 10 7 Soundness test . 10 7.1 Apparatus 10 7.2 Procedure 12 7.3 Report . 12 7.4 Retest 12 Annex A (in

13、formative) Alternative method for setting time tests . 13 A.1 Test principle . 13 A.2 Initial setting time procedure 13 A.3 Report initial setting time . 13 A.4 Final setting time procedure 13 A.5 Report final setting time 13 BS EN 196-3:2016EN 196-3:2016 (E) 3 European foreword This document (EN 19

14、6-3:2016) 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 identical text or by endorsement, at the latest by May 2017, and con

15、flicting national standards shall be withdrawn at the latest by May 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 for identifying any or all such patent rights. This document supersedes EN

16、 196-3:2005+A1:2008. In comparison to EN 196-3:2005+A1:2008, the following changes have been made: In Clause 2, the normative references have been updated. In 6.2.2, data of repeatability and reproducibility have been added as a note. In 6.3.2, the elapsed time in minutes has been approximated to th

17、e nearest 5 min. The standard has been editorially revised. EN 196 consists of the following parts, under the general title “Methods of testing cement”: EN 196-1, Methods of testing cement Part 1: Determination of strength; EN 196-2, Method of testing cement Part 2: Chemical analysis of cement; EN 1

18、96-3, Methods of testing cement Part 3: Determination of setting times and soundness; CEN/TR 196-4, Methods of testing cement Part 4: Quantitative determination of constituents; EN 196-5, Methods of testing cement Part 5: Pozzolanicity test for pozzolanic cement; EN 196-6, Methods of testing cement

19、Part 6: Determination of fineness; EN 196-7, Methods of testing cement Part 7: Methods of taking and preparing samples of cement; EN 196-8, Methods of testing cement Part 8: Heat of hydration - Solution method; EN 196-9, Methods of testing cement Part 9: Heat of hydration - Semi-adiabatic method; EN

20、 196-10, Methods of testing cement Part 10: Determination of the water-soluble chromium (VI) content of cement. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria

21、, Croatia, Cyprus, 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

22、 and the United Kingdom. BS EN 196-3:2016EN 196-3:2016 (E) 4 1 Scope This European Standard specifies the methods for determining standard consistence, setting times and soundness of cements. The method applies to common cements and to other cements and materials, the standards for which call up thi

23、s method. It may not apply to other cement types that have, for example, a very short initial setting time. The method is used for assessing whether the setting time and soundness of a cement is in conformity with its specification. This part of EN 196 describes the reference methods and allows the

24、use of alternative procedures and equipment, as indicated in notes, provided that they have been calibrated against the reference methods. In the event of a dispute, only the reference equipment and procedures are used. 2 Normative references The following documents, in whole or in part, are normati

25、vely referenced in this document and are indispensable 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 s

26、trength 3 Principles Cement paste of standard consistence has a specified resistance to penetration by a standard plunger. The water required for such a paste is determined by trial penetrations of pastes with different water contents. The setting time is determined by observing the penetration of a

27、 needle into cement paste of standard consistence until it reaches a specified value. The soundness is determined by observing the volume expansion of cement paste of standard consistence as indicated by the relative movement of two needles. 4 Laboratory, equipment and materials 4.1 Laboratory The l

28、aboratory in which specimens are prepared and tested shall be maintained at a temperature of (20 2) C and a relative humidity of not less than 50 %. The temperature and relative humidity of the air in the laboratory and the temperature of the water in the storage containers shall be recorded at leas

29、t once per day during testing. Cement, water and apparatus used to make and test specimens shall be at a temperature of (20 2) C. NOTE See Annex A for storage conditions to be applied when testing setting times by alternative method. Where temperature ranges are given, the target temperature at whic

30、h the controls are set shall be the middle value of the range. BS EN 196-3:2016EN 196-3:2016 (E) 5 4.2 Equipment and materials The tolerances shown in Figures 1 and 2 are important for correct operation of the equipment in the testing procedure. When regular control measurements show that the tolera

31、nces are not met, the equipment shall be rejected, adjusted or repaired. Records of control measurements shall be kept. Acceptance measurements on new equipment shall cover mass, volume, and dimensions to the extent that these are indicated in this document paying particular attention to those criti

32、cal dimensions for which tolerances are specified. In those cases where the material of the equipment can influence the results, the material is specified and shall be used. The approximate dimensions shown in the figures are provided as guidance to equipment manufacturers or operators. Dimensions w

33、hich include tolerances are obligatory. 4.2.1 Balance, capable of weighing to an accuracy of 1 g. 4.2.2 Graduated cylinder or burette, capable of dispensing to an accuracy of 1 ml. 4.2.3 Mixer, conforming to EN 196-1. NOTE A more homogeneous paste is produced at the lower limit of tolerance for the

34、clearance between the blade and the bowl. 4.2.4 Water, distilled or deionized water shall be used for making the specimens. Drinking water may be used for storing and boiling specimens. 4.2.5 Timer, capable of measuring to an accuracy of 1 s. 4.2.6 Measuring device, capable of measuring to an accura

35、cy of 0,5 mm. 5 Standard consistence test 5.1 Apparatus Use the manual Vicat apparatus as shown in Figure 1a) and b) with the plunger shown in Figure 1c). The plunger shall be of non-corrodible metal in the form of a right cylinder of at least 45 mm effective length and of (10,00 0,05) mm diameter.

36、The total mass of moving parts shall be (300 1) g. Their movement shall be truly vertical and without appreciable friction, and their axis shall coincide with that of the plunger. The Vicat mould (see Figure 1a) to contain the paste under test shall be of hard rubber, plastics or brass. It shall be

37、of cylindrical or preferably truncated conical form (40,0 0,2) mm deep and shall have an internal diameter of (75 10) mm. It shall be adequately rigid and shall be provided with a base-plate larger than the mould and at least 2,5 mm thick, constructed of impermeable material resistant to attack by c

38、ement paste, e.g. plane glass. Moulds of other metal may be used provided that they are of the specified depth and that their use has been calibrated against the specified mould. It is recommended that a laboratory uses base plates of equal thickness in order that the scale of the Vicat apparatus ha

39、s only to be adjusted once for several determinations. BS EN 196-3:2016EN 196-3:2016 (E) 6 5.2 Procedure 5.2.1 Mixing the cement paste Weigh, to an accuracy of 1 g, by means of the balance (4.2.1), 500 g of cement and a quantity of water, e.g. 125 g. When water is measured by volume using the gradua

40、ted cylinder or burette (4.2.2) it shall be dispensed to an accuracy of 1 ml. Mix each batch of paste mechanically using the mixer (4.2.3). The timing of the various mixing stages refers to the times at which mixer power is switched on/off and shall be maintained within 2 s. With the mixer in the op

41、erating condition: a) place the water and cement into the bowl taking care to avoid loss of water or cement; complete the addition within 10 s; b) immediately start the mixer at low speed while starting the timing of the mixing stages. In addition, record the time to the nearest minute as zero time;

42、 NOTE Zero time is the point from which the initial (see 6.2) and final (see 6.3) setting times are calculated. c) stop the mixer after 90 s for 30 s during which remove by means of a suitable rubber or plastics scraper all the paste adhering to the wall and bottom part of the bowl and place it in t

43、he middle of the bowl; d) restart the mixer and run at low speed for a further 90 s. The total mixer running time shall be 3 min. Any other mixing method may be used provided that it has been calibrated against the reference method. BS EN 196-3:2016EN 196-3:2016 (E) 7 Dimensions in millimetres a) Si

44、de view with mould in upright position for initial setting time determination b) Front view with mould inverted for final setting time determination c) Plunger for standard consistence d) Needle for initial set e) Needle with attachment for final set Key 1 mould 2 correcting weights 3 base plate 4 c

45、ontainer 5 water 6 air vent ( approximately 1,5) 7 air vent 8 view from below needle with attachment for determining final setting time Figure 1 Typical manual Vicat apparatus for detemination of standard consistence and setting time BS EN 196-3:2016EN 196-3:2016 (E) 8 Only one correcting weight is

46、required for each Vicat apparatus if the mass of the plunger and the needles with and without the attachment is always the same e.g. (9,0 0,5) g. 5.2.2 Filling the mould Transfer the paste immediately to the lightly oiled mould, which has previously been placed on the lightly oiled base-plate, and f

47、ill it to excess without undue compaction or vibration. Remove any voids in the paste by gently tapping the slightly overfilled mould against the ball of the hand. Remove the excess by a gentle sawing motion with a straight-edged implement in such a way as to leave the paste filling the mould and ha

48、ving a smooth upper surface. NOTE Some oils have been found to affect the setting time test; mineral-based oils have been found to be suitable. WARNING Wet cement paste is highly alkaline and can cause skin burns. Avoid direct contact with skin during manual operations by wearing protective gloves.

49、5.2.3 Determination of standard consistence Adjust the manual Vicat apparatus with the plunger (Figure 1c), attached in advance of the test, by lowering the plunger to rest on the base-plate to be used and adjusting the pointer or the scale to read zero. Raise the plunger to the stand-by position. Immediately after levelling the paste, transfer the mould and base-plate to the Vicat apparatus and position it centrally under the plunger. Lower the plunger gently until it is in contact wit