1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58floor screeds based on calcium sulfate Part 2: Test methodsThe European Standard EN 13454-2:2003, i
2、ncorporating amendment A1:2007, has the status of a British StandardICS 91.100.10; 91.100.50Binders, composite binders and factory made mixtures for BRITISH STANDARDBS EN 13454-2:2003Incorporating amendment no. 1BS EN 13454-2:2003This British Standard was published under the authority of the Standar
3、ds Policy and Strategy Committee on 29 March 2004 BSI 2007ISBN 978 0 580 60111 8contract. Users are responsible for its correct application.Amendments issued since publicationAmd. No. Date Comments17357 28 September 2007 Implementation of CEN amendment A1:2007Compliance with a British Standard canno
4、t confer immunity from legal obligations.National forewordThis British Standard is the UK implementation of EN 13454-2:2003, incorporating amendment A1:2007. The UK participation in its preparation was entrusted by Technical Committee B/544, Plastering, rendering, dry lining, to Subcommittee B/544/1
5、,Gypsum plasters, cast gypsum and ancillaries.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13454-2:2003+A1 July
6、2007 ICS 91.100.10; 91.100.50 Supersedes EN 13454-2:2003 English Version Binders, composite binders and factory made mixtures for floor screeds based on calcium sulfate - Part 2: Test methods Liants, liants composites et mlanges fabriqus en usine base de sulfate de calcium pour chapes de sol - Parti
7、e 2: Mthodes dessai Calciumsulfat-Binder, Calciumsulfat-Compositbinder und Calciumsulfat-Werkmrtel fr Estriche - Teil 2: Prfverfahren This European Standard was approved by CEN on 1 September 2003 and includes Amendment 1 approved by CEN on 22 June 2007. CEN members are bound to comply with the CEN/
8、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 CEN Management Centre or to
9、 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 CEN Management Centre has the same status as the official versio
10、ns. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spa
11、in, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national
12、 Members. Ref. No. EN 13454-2:2003+A1:2007: EEN 13454-2:2003+A1:2007 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Test conditions and sampling4 3.1 General requirements for testing.4 3.1.1 Water .4 3.1.2 Apparatus .4 3.2 Sampling for binders (CAB, CAC)5 3.3 Sampling for factory
13、 made mixtures (CA).5 4 Test methods for binders (CAB ; CAC) .5 4.1 Content of calcium sulfate5 4.1.1 Principle5 4.1.2 Apparatus .5 4.1.3 Reagents.6 4.1.4 Procedure .6 4.2 Determination of pH.7 4.3 Determination of setting time .7 4.3.1 Principle7 4.3.2 Apparatus .7 4.3.3 Standard consistence test7
14、4.3.4 Procedure .7 4.3.5 Setting time test.8 4.4 Determination of strengths.9 4.4.1 Apparatus .9 4.4.2 Procedure .11 4.4.3 Water demand for flow table value 12 4.4.4 Preparation of test specimens .12 4.4.5 Testing the specimens 13 4.5 Determination of shrinkage and swelling .14 4.5.1 Principle14 4.5
15、.2 Apparatus .15 4.5.3 Preparation and storage of the specimens.16 4.5.4 Measuring of the specimens 16 5 Test method for factory made mixtures (CA) .17 5.1 Determination of pH value 17 5.2 Working time 17 5.2.1 Flowing mixture .17 5.2.2 Stiff mixture 18 5.3 Determination of strength.18 5.3.1 Composi
16、tion of the test sample .18 5.3.2 Flexural and compressive strength .18 5.4 Determination of shrinkage and swelling .18 6 Test report 18 Bibliography 20 EN 13454-2:2003+A1:2007 (E) 3 Foreword This document (EN 13454-2:2003+A1:2007) has been prepared by Technical Committee CEN/TC 241 “Gypsum and gyps
17、um based products”, the secretariat of which is held by AFNOR. This document shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2008 and conflicting national standards shall be withdrawn at the latest by January 20
18、08. This document includes Amendment 1 approved by CEN on 2007-06-22. This document supersedes EN 13454-2:2003. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. !deleted text“ The European Standard EN 13454 for binders, composite binders and facto
19、ry made mixtures for floor screeds based on calcium sulfate consists of two parts: Part 1: Definitions and requirements Part 2: Test methods The requirements in prEN 13454-1 are based on the results of tests according to EN 13454-2 on binders, composite binders and factory made mixtures for floor sc
20、reeds based on calcium sulfate. This European Standard describes test methods for binders, composite binders and factory made mixtures where the principal active component is calcium sulfate. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following cou
21、ntries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Sp
22、ain, Sweden, Switzerland and United Kingdom. EN 13454-2:2003+A1:2007 (E) 4 1 Scope This European Standard describes the test methods for binders and composite binders for floor screeds based on calcium sulfate specified in prEN 13454-1. This European Standard describes the test methods for factory m
23、ade mixtures for floor screeds based on calcium sulfate specified in EN 13813. This European Standard describes reference test methods. If other than these methods and conditions are used, it is necessary to show that they give results equivalent to those given by the reference methods. In the event
24、 of a dispute, only the reference test method is used. 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 publications are listed hereafter. F
25、or 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 (including amendments). !EN 196-1:2005“, Met
26、hods of testing cement Part 1 : Determination of strength !EN 196-3:2005, Methods of testing cement - Part 3: Determination of setting times and soundness“ EN 196-7:1989, Methods of testing cement Part 7: Methods of taking and preparing samples of cement EN 459-2:2001, Building lime Part 2: Test met
27、hods EN 13813, Screed material and floor screeds - Screed material - Properties and requirements EN 13892-1, Methods of test for screed materials - Part 1: Sampling, making and curing specimens for test 3 Test conditions and sampling 3.1 General requirements for testing 3.1.1 Water The water used fo
28、r testing and chemical analyses shall be distilled or deionised. Unless otherwise specified, the water temperature shall be the same as the air temperature in the laboratory. 3.1.2 Apparatus The apparatus used for gauging and the moulds used for preparing the test specimens, shall be free from leaks
29、 and shall be manufactured from a water proof material which is non reactive to calcium sulfate (e.g. glass, brass, stainless steel, hardened steel, hard rubber and plastics etc.). Since the characteristics of calcium sulfate are strongly influenced by the presence of particles of calcium sulfate di
30、hydrate which can influence the setting time, all equipment used in the tests shall be kept in a perfect state of cleanliness. EN 13454-2:2003+A1:2007 (E) 5 3.2 Sampling for binders (CAB, CAC) Sampling for binders shall be carried out in accordance with EN 196-7 and EN 459-2. 3.3 Sampling for factor
31、y made mixtures (CA) Sampling for factory made mixtures shall be carried out in accordance with EN 13892-1.The composition of samples shall always be representative of the average composition of the material, the possibility of segregation being taken into consideration. The test report shall state
32、whether the samples taken are spot samples or composite samples (See 3.6 and 3.7 of EN 196-7:1989). Samples which are likely to change in air shall be placed in airtight containers, such as cans, immediately after they have been taken. Wherever possible tests shall be carried out on specimens prepar
33、ed immediately after obtaining the sample, if necessary on site. Specimens shall be prepared during working time but not later than 2 h after gauging. This period shall also be observed when fresh samples are supplied to a testing centre, and may be appropriately decreased or increased for samples c
34、ontaining accelerators or retarders. If transportation of fresh samples cannot be avoided, they shall be supplied immediately for testing, accompanied by a certificate stating which tests are to be carried out, and protected from changes, such as loss of water, entry of water etc., as may occur duri
35、ng transportation. Specimens shall be prepared immediately on receipt of the sample, after the sample has been mixed again manually. Specimens shall be prepared within the working time after gauging. For this reason, they shall as a rule (e.g. when prepared in situ) be stored under vibration-free co
36、nditions and protected from climatic effects (e.g. frigobox etc.) for at least 24 h before they are conveyed in the moulds for testing. If special requirements in respect of the preparation and storage of the particular sample are specified for the tests envisaged these shall be observed. 4 Test met
37、hods for binders (CAB ; CAC) 4.1 Content of calcium sulfate 4.1.1 Principle The calcium sulfate is decomposed by digestion with hydrochloric acid solution. Insoluble impurities are removed by filtration. The sulfate in the filtrate is determined gravimetrically as barium sulfate. 4.1.2 Apparatus a)
38、Sieve 0,1 mm mesh. b) 600 ml and 800 ml beakers. c) Rapid filtration funnels. d) Muffle furnace. e) Ignition crucible, porosity 4. f) Filter paper capable of retaining particles greater than 2,5 m. g) Porous porcelain or silica crucible. EN 13454-2:2003+A1:2007 (E) 6 4.1.3 Reagents a) Hydrochloric a
39、cid solution : 2 N ; b) Ammonia solution : (50 % by volume) c) Barium chloride : (3 % by mass solution in water) d) Methyl orange or other suitable indicator. 4.1.4 Procedure Grind the dried sample until it passes completely through a sieve with a mesh of 0,1 mm. Weigh accurately about 0,5 g into a
40、600 ml beaker, add 25 ml of hot distilled water. Mix the sample and water with a glass rod until all the lumps are dispersed. Add 25 ml of 2 N HCl. Bring to the boil and maintain this for 10 min. Add 150 ml of hot water and allow to boil for 15 min. Remove the beaker from the heat and filter through
41、 the filter paper into an 800 ml beaker. Wash out the beaker and filter paper using hot distilled or deionised water until the filtrate is free of chloride. Make up to approximately 350 ml using distilled water. Add a few drops of indicator and neutralise with ammonia solution. Add 20 ml 2 N HCl. Br
42、ing to the boil again and add 50 ml of hot barium chloride solution stirring vigorously during the addition. Bring to the boil and allow to settle just below boiling for at least 30 min. Filter by one of the following methods : a) Filtration using filter crucibles. Ignite a clean ignition crucible,
43、porosity 4, or a porous porcelain filter crucible at (800 25) C for 10 min. Cool in a desiccator to room temperature and weigh. Decant the clear liquid through the crucible using a slight suction. Wash the precipitate 3 times by decantation with hot water, transfer to the crucible and wash 6 times w
44、ith small quantities of hot water. The last wash should be chloride free. Dry the crucible and contents and ignite at (800 25) C for 10 min. b) Filtration using filter paper. Use filter paper as described. Decant the clear liquid through the filter paper. Wash the precipitate 3 times by decantation
45、with hot water, transfer to the filter paper and wash with small quantities of hot water until the wash is chloride free. After filtration and washing fold the paper around the precipitate and place it in a weighed porcelain or silica crucible, previously ignited at (800 25) C and cooled in a desicc
46、ator. Heat gently to char the paper and expel the volatile matter. Do not allow the paper to burst into flames. Raise the temperature slowly to burn off the carbon with free access of air. Finally ignite for 10 min at (800 25) C. Cool in a desiccator and weigh. Calculate the CaSO4content as a percen
47、tage from the equation : CaSO4 = W2x 58,33 / W1(1) where W1is the mass of sample, in grams ; W2 is the mass of precipitate, in grams. EN 13454-2:2003+A1:2007 (E) 7 4.2 Determination of pH Disperse 1 part by mass of the pulverised sample in 10 parts by mass of deionized or distilled water. Stir it fo
48、r 5 min and then measure the pH by a pH-meter or pH-paper to the nearest 0,5 pH. 4.3 Determination of setting time 4.3.1 Principle Determine setting time using the method given in EN 196-3, “binder“ being substituted, where “cement“ is mentioned. The setting time is determined by observing the penet
49、ration of a needle into a binder paste of standard consistence according to clause 5 of !EN 196-3:2005“ until it reaches a specified value. Binder paste of standard consistency 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. 4.3.2 Apparatus a) Mixer : As described in 4.4 of !EN 196-1:2005“. b) Vicat penetration apparatus : As described in 5.1 of !EN 196-3:2005“. 4.3.3 Standard consiste
