1、STD-BSI BS EN 2937-ENGL 2999 Lb2Ybb9 0820082 Lb5 - BRITISH STANDARD Test method for hydraulic setting floor smoothing and/or levelling compounds - Standard mixing procedures The European Standard EN 1937 1999 has the status of a British Standard ICs 91.100.99 NO COPYING WITHOUT BSI PERMISSION EXCEPT
2、 AS PEBMiTED BY COPYRIGHT LAW BS EN 19371999 STD-BSI BS EN 1937-ENGL 1999 Lb24bb7 0820083 OTL M been prepared under the Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 December 1999 direction of the Sector Amd. No. Date
3、O BSI 121999 BS EN 1937:1999 Comments National foreword This British Standard is the English hguage version of EN 19371999. The UK participation in its preparation was entrusted to Technical Committee PRI/52, Adhesives, which has the responsibility to: - aid enquirers to understand the text; - prese
4、nt to the responsible European committee any enquiries on the - monitor related intedonal and European developments and promulgate intapretation, or proposals for change, and keep the UK mterests informed; them in the UK A list of organizations represented on this committee can be obtained on reques
5、t to its secretary. Cross-references The British Standards which implement intedonal or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index“, or by using the “Find facility of the BSI
6、Standards Electronic Catalogue. A British Standard does not purport to include ail the necessary provisions of a contract. 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 o
7、f pages This 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 document was last issued. ISBN O 580 35672 8 STD-BSI BS EN L937-ENGL 1999 m Lb24bb9 082
8、0084 T38 m EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1937 September 1999 ICs 91.100.99 English version Test method for hydraulic setting floor smoothing andlor levelling compounds - Standard mixing procedures Mthode dessai pour les mortiers de lissage etiou de nivellement A prise hydrauli
9、que - Prparation des rndlanges Prfverahren fur hydraulisch erhrtende Boden- Spachtelmassen - Standardmischverahren This European Standard was approved by CEN on 9 August 1999. CEN members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this Eur
10、opan Standard the status of a national standard without any alteration. Up-todate lists and bibliographical references concerning sich national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English,
11、 French, German). A version in any other language made by trawlation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as tie official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic,
12、 Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Central Secretariat: rue de Stassart, 36
13、8-1050 Brussels Q 1999 CEN All rights of exploitation in any form and by any means resewed worldwide for CEN national Members. Ref. No. EN 1937:1999 E STD.BS1 BS EN 1937-ENGL 1999 W Zb2Libb9 0820085 974 Page 2 EN 1937:1999 Content Foreword 1 Scope 2 Normative references 3 Definitions 4 Safety 5 Appa
14、ratus 6 Materials 7 Mixing conditions 8 Mixing procedures 9 Test report Page 3 3 3 3 4 4 5 6 6 7 0 BSI 12-1999 STD.BSI BS EN 1937-ENGL L797 1b24bb9 082008b 800 Page 3 EN 1937:1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 193 “Adhesives“, the Secretariat of whic
15、h is held by AENOR. 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 2000, and conflicting national standards shall be withdrawn at the latest by March 2000. According to the CENCENELEC Inter
16、nal 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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland
17、and the United Kingdom. 1 scope This European Standard specifis the procedure for mixing hydraulic setting smoothing and/or levelling compounds with water and/or a liquid component as supplied by the manufacturer. 2 Normative references This European Standard incorporates, by dated or undated refere
18、nce, provisions from other publications. These nomatie references are cited at the appropriate places in the text and, 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 incorporate
19、d in it by amendment of revision. For undated references the latest edition of the publication referred to applies. EN 196-1 Methods oftesfing cernent - Determination of strength. EN 1066 Adhesives - Sampling. EN 1067 Adhesives - Examination and preparation of samples for testing. IS0 554 Standard a
20、tmospheres for conditioning andor testing - Specifications.3 3 Definitions For the Durpose of this standard the following definition applies: BSI 12-1999 STD-BSI BS EN 1737-ENGL 3799 m Ib24bbel 0820087 747 Page 4 EN 1937:1999 3.1 hydraulic setting smoothing andlor levelling compound, referred to in
21、this standard as “smoothing and/or levelling compound“, is a material based on hydraulic setting binders designed to provide smooth even surfaces ready to receive floor cover-ings. The compound is supplied in powder form which is mixed with a liquid component. The liquid can be water and/or a separa
22、te liquid component provided by the manufacturer. Levelling compounds are normally applied in higher thickness than smoothing compounds. 4 Safety Persons using this standard shall be familiar with normal laboratory practice. This standard does not purport to address all the safety problems, if any,
23、associated with its use. It is the responsibility of the user to establish health and safety practices and to ensure compliance with any European and national regulatory conditions. 5 Apparatus 5.1 Mixing equipment in accordance with EN 196-1 (as shown in figure 1). The mixer shall consist essential
24、ly of: a) a stainless steel bowl with a capacity of about 5 I and of the general shape and size shown in figure 1. It shall be provided with means by which it can be fixed securely to the mixer frame during mixing and by which the height of the bowl in relation to the blade and, to some extent, the
25、gap between blade and bowl can be finely adjusted and fixed; b) a stainless steel blade of the general shape, size and tolerances shown in figure 1, revolving about its own axis as it is driven in a planetary movement around the axis of the bowl by an electric motor at controlled speeds. The two dir
26、ections of rotation shall be opposite and the ratio between the two speeds shall not be a whole number. Where more than one mixer is used, blades and bowls shall form sets which are always used together. The gap between blade and bowl shown in figure 1 shall be checked every month and adjusted if ne
27、cessary. BSI 12-1999 STD-BSI BS EN L737-ENGL L979 m Lb24bb9 0820088 bB3 m Rotation Planetary rnove- ment min” min” low speed 140 i 5 62 i 5 - high speed 285 i1 O 125 i 10 Page 5 EN 1937:1999 Dimensions in millimetres Figure 1: Bowl and blade NOTE: The gap indicated in figure 1 (3,O i 1,O) mrn refers
28、 to the situation when the blade in the empty bowl is brought as close as possible to the wall. Simple tolerances gauges (“feeler gauges”) are useful where direct measurement is difficult. The mixer shall operate at the speeds given in Table 1. Table 1 : Speeds of mixer blades 5.2 Timer, with an acc
29、uracy of 1 s. O BSI 12-1999 STD-BSI BS EN L937-ENGL &999 M Lb24bb7 0820089 51T M Page 6 EN 1937:1999 6 Materials 6.1 Powder component, for smoothing and/or levelling compound. Take a sample in accordance with EN 1066 of the powder component to be tested and prepare it for testing in accordance with
30、EN 1067. Keep the sample in a dry sealed container until use. NOTE: Physical characteristics of the powder component may change with age. Therefore, the date of manufacture or the batch number should be recorded. 6.2 Liquid component, for smoothing and/or levelling compound. The liquid component sha
31、ll be water and/or a separate liquid component as supplied by the manufacturer. The water shall be distilled or deionized. Other water may be used if it can be shown to give the same results. 7 Mixing conditions All test materials (apparatus, product, gauging and/or separate liquid component) shall
32、be stored under the standard conditions (23 f 2) OC and (50 i 5) % relative humidity in accordance with IS0 554 for at least 24 h before the test. The tests shall be carried out under the above mentioned standard conditions in a room where the air circulation speed is not greater than 0,2 m/s. 8 Mix
33、ing procedures The smoothing andlor levelling compound mixture is obtained by mechanical mixing using the standard mixer defined in 5.1 as follows: a) Mixina Drocedure without waitina time: Measure the water and/or the amount of liquid component (6.2) specified by the manufacturer for 2 kg of powder
34、 component (6.1) (or the mean amount where a range is specified) and pour into the mixing vessel. Add 2 kg powder component and mix for 1 min at low speed (in accordance with table 1). Scrape the blades and sides of the mixing vessel. Mix for a further one minute at high speed (in accordance with ta
35、ble 1). The total mixing time shall not exceed 3 min and the mixture shall be free from air bubbles. If it is not, wait one more minute to allow de-aeration and then use the mixture immediately. b) Mixina procedure with waitina time: Some compounds can require a waiting time and further mixing befor
36、e use in which case this will be specified by the manufacturer. If a waiting time is required, but not specifid exactly, wait 5 min followed by further mixing at high speed for 15 s. Wait a further 1 min to allow for de-aeration and then use the mixture immediately. 9 lest report The mixing procedur
37、e precedes further testing. The mixing procedure used (a) or b) and the total time elapsed to the end of the mixing procedure shall be specified in the test report of the subsequent test. The same mixing procedure should be used for all subsequent tests. 0 BSI 12-1999 BS EN 1937:1999 BSI 389 Chiswic
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