1、March 2014 Translation by DIN-Sprachendienst.English price group 12No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、91.100.10!%,;“2099324www.din.deDDIN EN 13279-2Gypsum binders and gypsum plasters Part 2: Test methods;English version EN 13279-2:2014,English translation of DIN EN 13279-2:2014-03Gipsbinder und Gips-Trockenmrtel Teil 2: Prfverfahren;Englische Fassung EN 13279-2:2014,Englische bersetzung von DIN EN 1
3、3279-2:2014-03Liants-pltres et enduits base de pltre pour le btiment Partie 2: Mthodes dessai;Version anglaise EN 13279-2:2014,Traduction anglaise de DIN EN 13279-2:2014-03SupersedesDIN EN 13279-2:2004-10www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Doc
4、ument comprises 25 pages 02.14 DIN EN 13279-2:2014-03 2 A comma is used as the decimal marker. National foreword This document (EN 13279-2:2014) has been prepared by Technical Committee CEN/TC 241 “Gypsum and gypsum based products” (Secretariat: AFNOR, France). The responsible German body involved i
5、n its preparation was the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Working Committee NA 005-09-10 AA Gips und Gipsprodukte. Amendments This standard differs from DIN EN 13279-2:2004-10 as follows: a) Clause 2 “Normative references” has been revised; b) in Subcla
6、use 4.3.3.4 “Procedure” a distinction is made between the mean diameter of the pat of hand-applied plaster and that of machine-applied plaster; c) Subclause 4.4.2.1 “General” has been extended to include the use of other methods, for example ultrasonic methods or Vicat machines. Previous editions DI
7、N 1168: 1941-06 DIN 1168-2: 1955x-03, 1975-05, 1975-07 DIN EN 13279-2: 2004-10 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13279-2 January 2014 ICS 91.100.10 Supersedes EN 13279-2:2004English Version Gypsum binders and gypsum plasters - Part 2: Test methods Liants-pltres et enduits base de
8、pltre pour le btiment -Partie 2: Mthodes dessai Gipsbinder und Gips-Trockenmrtel - Teil 2: PrfverfahrenThis European Standard was approved by CEN on 3 November 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Stan
9、dard 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 CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (Englis
10、h, 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bu
11、lgaria, 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,
12、Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Member
13、s. Ref. No. EN 13279-2:2014 EEN 13279-2:2014 (E) 2 Contents Page Foreword 3 Introduction . 4 1 Scope 5 2 Normative references 5 3 Test conditions and sampling 5 3.1 Test atmosphere (reference test) . 5 3.2 Sampling . 5 3.3 Preparation of the sample . 5 3.4 Water . 5 3.5 Appliances and apparatus 6 4
14、Test methods for gypsum binders and gypsum plasters (including special purposes) . 6 4.1 Sieve analysis (Fineness) . 6 4.1.1 Apparatus . 6 4.1.2 Determination of particles retained on 5 000 m sieves . 6 4.1.3 Determination of particles retained on 200 m and 100 m sieves 7 4.2 Determination of sulphu
15、r trioxide content and calculation of equivalent calcium sulfate 7 4.2.1 Principle 7 4.2.2 Apparatus . 7 4.2.3 Reagents . 8 4.2.4 Procedure . 8 4.2.5 Expression of results 8 4.3 Determination of the water/plaster ratio 8 4.3.1 Sprinkling method . 8 4.3.2 Dispersal method . 9 4.3.3 Flow table method
16、. 10 4.4 Determination of the setting time . 12 4.4.1 Knife method 12 4.4.2 Vicat cone method . 13 4.5 Determination of mechanical properties . 14 4.5.1 Apparatus . 14 4.5.2 Preparation of the test specimen . 17 4.5.3 Determination of hardness . 17 4.5.4 Determination of flexural strength . 18 4.5.5
17、 Determination of compressive strength 18 4.6 Determination of adhesion . 19 4.6.1 Principle 19 4.6.2 Apparatus . 19 4.6.3 Procedure . 19 4.6.4 Expression of results 20 Annex A (informative) Water retention 22 Bibliography 23 DINEN 13279-2:2014-03EN 13279-2:2014(E)3 Foreword This document (EN 13279-
18、2:2014) has been prepared by Technical Committee CEN/TC 241 “Gypsum and gypsum based products”, the secretariat of which is held by AFNOR. 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 July 2014
19、, and conflicting national standards shall be withdrawn at the latest by July 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. Th
20、is document supersedes EN 13279-2:2004. This document on gypsum binders and gypsum plasters, EN 13279, Gypsum binders and gypsum plasters, consists of two parts: Part 1: Definitions and requirements; Part 2: Test methods. This document for gypsum binders and gypsum plasters uses European standardize
21、d test methods as far as possible and where this was not applicable other appropriate proven test methods have been used. This document includes an informative Annex A concerning water retention. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
22、 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, Norwa
23、y, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 13279-2:2014-03 EN 13279-2:2014(E)4 Introduction Figure 1 shows the family of gypsum binders and gypsum plasters Figure 1 Family of gypsum biners and gypsum plasters DIN EN 13279-2:201
24、4-03 EN 13279-2:2014 (E) 5 1 Scope This European Standard describes the reference test methods for all gypsum binders and gypsum plasters covered by EN 13279-1. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for
25、its application. For dated referenced, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 196-1:2005, Methods of testing cement - Part 1: Determination of strength EN 196-7, Methods of testing cement - Part 7:
26、Methods of taking and preparing samples of cement EN 459-2:2010, Building lime - Part 2: Test methods EN 932-1, Tests for general properties of aggregates - Part 1: Methods for sampling ISO 565, Test sieves - Metal wire cloth, perforated metal plate and electroformed sheet - Nominal sizes of opening
27、s 3 Test conditions and sampling 3.1 Test atmosphere (reference test) Temperature of the test room, the equipment and the materials (plaster, water): (23 2) C Relative humidity of the air: (50 5) % 3.2 Sampling Sampling shall be carried out in accordance with EN 196-7. Sample granular material in ac
28、cordance with the procedures given in EN 932-1 for aggregates taking into account the need to minimise moisture and carbon dioxide absorption. The spot sample size shall be (8 3) kg. The test sample prior to testing shall be kept in hermetically sealed containers. 3.3 Preparation of the sample Befor
29、e carrying out tests, the mass of the sample shall be homogenised. Before carrying out chemical analyses, a representative sample of (50 5) g shall be taken and be ground to a particle size of 0,1 mm. 3.4 Water The water used for reference tests and chemical analyses shall be distilled or deionised.
30、 DIN EN 13279-2:2014-03 EN 13279-2:2014(E)6 3.5 Appliances and apparatus The apparatus used for gauging and the moulds used for preparing the test pieces, shall be free from leaks and shall be manufactured from a water resistant material which is non reactive to calcium sulphate (e.g. glass, brass,
31、stainless steel, hardened steel, hard rubber and plastics). Soft plastic and rubber materials shall not be used. Since the characteristics of plasters are strongly influenced by the presence of particles of calcium sulphate dihydrate which can influence the setting time, all the equipment used in th
32、e tests shall be kept in a perfect state of cleanliness. 4 Test methods for gypsum binders and gypsum plasters (including special purposes) 4.1 Sieve analysis (Fineness) 4.1.1 Apparatus a) Control sieves conforming to ISO 565: 1) 5 000 m, only for gypsum bricklaying plaster (C2); 2) 200 m and 100 m
33、for fibrous gypsum plaster elements (C1, C7); 3) 1 500 m for fibrous plaster works and thin coat plaster (C1, C6); b) wooden or plastic spatula; c) balance accurate to 0,1 g; d) desiccator. 4.1.2 Determination of particles retained on 5 000 m sieves (see 4.1.1 a) 4.1.2.1 Procedure From the hermetica
34、lly sealed laboratory sample weigh 500 g 25 g and pass through a 5 000 m sieve (see 4.1.1 a), crushing any soft lumps with a spatula. Weigh the residue and examine any hard particles retained on the sieve. Repeat the procedure on a second sample. Expression of results Express the mass retained on th
35、e sieve as a percentage of the total sample. Take the mean of the two results and record it in the test report. DINEN 13279-2:2014-03EN 13279-2:2014(E)7 4.1.3 Determination of particles retained on 200 m and 100 m sieves 4.1.3.1 Procedure Take approximately 200 g from the hermetically sealed sample
36、and dry it to constant mass1)at (40 2) C. Cool in a desiccator to room temperature. Weigh 50 g 5 % and transfer to the test sieve. Hold the sieve in one hand, slightly tilted, and shake it, allowing it to strike the other hand on each movement at a rate of approximately 125 times per minute, so that
37、 the plaster always spreads out evenly. Every 25 movements turn the sieve through 90 degrees. After 1 min weigh the residue and return to the sieve. Continue sieving until the mass of plaster passing the sieve in 1 min does not exceed 0,4 g. After sieving for 3 min, brush any fine material adhering
38、to the inner surface of the sieve frame onto the wire screen. Sieving is continued until the plaster passing the sieve in 1 min does not exceed 0,2 g. The underside of the wire screen surface is then brushed, and the brushings rejected, before the residue retained on the sieve is weighed. For the 10
39、0 m sieve the test is carried out in the same way and with the same limits as for the 200 m sieve. Repeat the procedure on a second sample. 4.1.3.2 Expression of results Express the mass retained on the sieve as a percentage of the total sample. Take the mean of the two results for each of the sieve
40、 sizes and compare with the requirements. 4.2 Determination of sulphur trioxide content and calculation of equivalent calcium sulfate NOTE This test method applies to all types of plasters. 4.2.1 Principle The calcium sulfate is decomposed by digestion with hydrochloric acid solution. Insoluble cons
41、tituents are removed by filtration. The sulfate in the filtrate is determined gravimetrically as barium sulfate. 4.2.2 Apparatus a) Sieve 0,1 mm mesh; b) 250 ml and 400 ml beakers; c) rapid filtration funnels; d) muffle furnace; e) vitreosil ignition crucible, porosity 4 or porous porcelain or silic
42、a crucible; f) filter paper capable of retaining particles greater than 2,5 m; g) balance to an accuracy of 0,001 g; h) desiccator. 1)Constant mass is defined as two successive weighings 24 h apart, differing by less than 0,1 %. DIN EN 13279-2:2014-03EN 13279-2:2014 (E) 8 4.2.3 Reagents a) Hydrochlo
43、ric acid solution: 2 mol/l HCl; b) barium chloride: (10 % solution). 4.2.4 Procedure The sample is ground until it passes through a sieve with a mesh of 0,1 mm. 0,5 g of the sample dried at 40 C shall be boiled with 30 ml HCl 1:1 and 150 ml distilled H2O for 15 min to 20 min in a 250 ml beaker. Then
44、 it shall be filtered through a quantitative filter (red band) into a 400 ml beaker and washed with hot deionised water. The solution shall be boiled, and while stirring it SO3shall be precipitated with 25 ml 10 % barium chloride, brought to the boil, and then allowed to stand for at least 12 h. The
45、 solution shall be filtered through a quantitative filter (red band) and washed using hot deionised water, until it is free of chloride. The filter residue shall be left to incinerate slowly in the crucible and ignited at 800 C until constant weight is achieved, then be cooled in a desiccator and we
46、ighed. The test shall be repeated. 4.2.5 Expression of results 4.2.5.1 Calculation of SO3The sulfate content expressed as SO3is calculated in percent from the Formula (1): pmBaSOSO100343,043=(1) where BaSO4is the mass of the barium sulfate BaSO4, in g; mpis the mass of the sample, in g. 4.2.5.2 Calc
47、ulation of equivalent calcium-sulfate The equivalent calcium-sulfate is calculated in percent from the Formula (2): CaSO 1,7 x SO43= (2) 4.3 Determination of the water/plaster ratio NOTE There are no corresponding requirements in EN 132791. 4.3.1 Sprinkling method This method is used for gypsum bind
48、ers. 4.3.1.1 Principle Determination of the mass of the gypsum binder in grams which can be saturated when it is sprinkled into 100 g of water. DIN EN 13279-2:2014-03 EN 13279-2:2014(E)9 4.3.1.2 Apparatus a) Cylindrical glass container with 66 mm internal diameter and 66 mm height and with markings at a height of 16 mm and 32 mm above the inner surface of the base; b) chronometer; c) balance, accurate to 0,1 g. 4.3.1.3 Procedure Pour 100 g of water into the glass container, while taking care
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