1、BS EN12808-3:2008ICS 91.100.10NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDGrouts for tilesPart 3: Determination of flexural andcompressive strengthThis British Standardwas published underthe authority of theStandards Policy andStrategy Committee on 30Novembe
2、r 2008 BSI 2008ISBN 978 0 580 61258 9Amendments/corrigenda issued since publicationDate CommentsBS EN 12808-3:2008National forewordThis British Standard is the UK implementation of EN 12808-3:2008. Itsupersedes BS EN 12808-3:2002 which is withdrawn.The UK participation in its preparation was entrust
3、ed to TechnicalCommittee B/539, Ceramic tiles and other rigid tiling.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct applicat
4、ion.Compliance with a British Standard cannot confer immunityfrom legal obligations.BS EN 12808-3:2008EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 12808-3October 2008ICS 83.180; 91.100.10 Supersedes EN 12808-3:2001 English VersionGrouts for tiles - Part 3: Determination of flexural andcompressi
5、ve strengthMortiers de joints pour carrelage - Partie 3: Dterminationde la rsistance la flexion et la compressionMrtel und Klebstoffe fr Fliesen und Platten - Teil 3:Bestimmung der Biege- und DruckfestigkeitThis European Standard was approved by CEN on 29 August 2008.CEN members are bound to comply
6、with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management C
7、entre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficia
8、l versions.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
9、, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national
10、 Members.Ref. No. EN 12808-3:2008: EBS EN 12808-3:2008EN 12808-3:2008 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Sampling.4 4 Test conditions 4 5 Test materials.4 6 Apparatus .4 7 Procedure .5 7.1 Mixing of grouts.5 7.2 Preparation of test specimens .5 7.3 Flexural strength u
11、nder standard conditions .6 7.4 Compressive strength under standard conditions 6 7.5 Flexural and compressive strength after freeze-thaw cycles .6 8 Evaluation of results .6 8.1 Flexural strength6 8.2 Compressive strength.7 9 Test report 7 Bibliography 9 BS EN 12808-3:2008EN 12808-3:2008 (E) 3 Forew
12、ord This document (EN 12808-3:2008) has been prepared by Technical Committee CEN/TC 67 “Ceramic tiles”, the secretariat of which is held by UNI. 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 Apr
13、il 2009, and conflicting national standards shall be withdrawn at the latest by April 2009. 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 ri
14、ghts. This document supersedes EN 12808-3:2001. This document is one of a series of European Standards for ceramic tile adhesives including: EN 1308, Adhesives for tiles - Determination of slip EN 1323, Adhesives for tiles - Concrete slabs for tests EN 1324, Adhesives for tiles - Determination of sh
15、ear adhesion strength of dispersion adhesives EN 1346, Adhesives for tiles - Determination of open time EN 1347, Adhesives for tiles - Determination of wetting capability EN 1348, Adhesives for tiles - Determination of tensile adhesion strength for cementitious adhesives EN 12002, Adhesives for tile
16、s - Determination of transverse deformation for cementitious adhesives and grouts EN 12003, Adhesive for tiles - Determination of shear adhesion strength of reaction resin adhesives EN 12004, Adhesives for tiles Requirements, evaluation of conformity, classification and designation EN 12808-1, Grout
17、s for tiles Part 1: Determination of chemical resistance of reaction resin mortars EN 12808-2, Grouts for tiles Part 2: Determination of resistance to abrasion EN 12808-3, Grouts for tiles Part 3: Determination of flexural and compressive strength EN 12808-4, Grouts for tiles Part 4: Determination o
18、f shrinkage EN 12808-5, Grouts for tiles Part 5: Determination of water absorption According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Den
19、mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 12808-3:2008EN 12808-3:2008 (E) 4 1 Scope This Europea
20、n Standard applies to all ceramic tile grouts for internal and external tile installations on walls and floors. This European Standard describes the test method to be used to determine the compressive and flexural strength of ceramic tile grouts. This European Standard does not contain performance r
21、equirements or recommendations for the design and installation of ceramic tiles. NOTE Ceramic tile grouts may also be used for other types of tiles (natural and agglomerated stones, etc.), where these do not adversely affect the stones. 2 Normative references The following referenced documents are i
22、ndispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 196-1:2005, Method of testing cement Part 1: Determination of strength EN 1067, Adhesi
23、ves - Examination and preparation of samples for testing EN ISO 15605, Adhesives Sampling (ISO 15605:2000) 3 Sampling Take a sample of at least 2 kg of the product to be tested in accordance with EN ISO 15605 and EN 1067. 4 Test conditions Standard conditions shall be (23 2) C and (50 5) % R.H. and
24、a speed of air in the working area less than 0,2 m/s. 5 Test materials Condition all test materials for at least 24 h under standard conditions. 6 Apparatus 6.1 Three gang mould shall consist of three horizontal compartments so that three prismatic specimens 40 mm x 40 mm x 160 mm can be prepared si
25、multaneously (see EN 196-1:2005, Clause 4.5). 6.2 Jolting apparatus or jolting table used for the compaction of 40 mm x 40 mm x 160 mm grout specimen; shall comply with Clause 4.6 of EN 196-1:2005. BS EN 12808-3:2008EN 12808-3:2008 (E) 5 6.3 Flexural strength testing machine shall be capable of appl
26、ying the load with suitable capacity and sensitivity for the test. The machine shall be provided with a flexure device in accordance with Clause 4.7 of EN 196-1 (see Figure 1). 6.4 Compressive strength testing machine shall comply with Clause 4.8 of EN 196-1:2005. The test requires the use of a jig
27、(in accordance with Clause 4.9 of EN 196-1:2005) to be incorporated in the lower platen; the upper platen receives the load from the machine through an intermediate spherical seating (see Figure 2). 7 Procedure 7.1 Mixing of grouts The amount of water and/or liquid admix required for preparing the c
28、ementitious grout shall be as stated by the manufacturer in parts by weight, i.e. liquid to dry powder. Prepare at least 2 kg of the grout in a mixer of the type described in Clause 4.4 of EN 196-1:2005, using the slow speed settings, (140 5) r/min rotation and (62 5) r/min planetary movement. Carry
29、 out the following procedure: pour the liquid into the pan; scatter the dry powder over the liquid; mix for 30 s; take out the mixing paddle; scrape down the paddle and pan within 1 min; replace the paddle and mix for 1 min. Let the grout mature if and as specified in the manufacturers instructions,
30、 and then mix for a further 15 s. In the case of reaction resin grouts follow the manufacturers instructions. 7.2 Preparation of test specimens Mould the specimens immediately after the preparation of the grout, with the mould firmly clamped to the jolting table. Introduce, using a suitable scoop, t
31、he first of two layers of grout into each of the compartments, directly from the mixing bowl. Spread the layer uniformly, then compact using 60 jolts. Introduce the second layer of grout, level and compact with a further 60 jolts. Lift the mould gently from the jolting table, strike off excess of ma
32、terial and smooth the surface with a flat trowel. Wipe off the grout left on the perimeter of the mould. Cover the mould with a plate glass sheet according to EN 196-1. Place the mould, suitably identified, on a horizontal base in standard conditions, (23 2) C and (50 5) % R.H. After 24 h carefully
33、remove the specimen from the mould. BS EN 12808-3:2008EN 12808-3:2008 (E) 6 Keep the demoulded prism in standard conditions for 27 days, leaving a clearance of at least 25 mm on all sides. Prepare three specimen for each grout. 7.3 Flexural strength under standard conditions After conditioning has b
34、een completed place the prism in the testing machine (6.3) with one side face on the supporting rollers and with the longitudinal axis normal to the support. Apply the load vertically in accordance with the procedure described in Clause 9.1 of EN 196-1:2005. Keep the prism halves in standard conditi
35、ons until tested in compression. 7.4 Compressive strength under standard conditions Test the prism halves broken in flexion, by means of the equipment specified in 6.4 and following the procedure described in Clause 9.2 of EN 196-1:2005. 7.5 Flexural and compressive strength after freeze-thaw cycles
36、 Prepare the test units in accordance with 7.2. Condition the test units for 6 days in standard conditions and then immerse in water for 21 days before carrying out 25 freeze-thaw cycles, in accordance with the following procedure. For each freeze-thaw cycle: remove the test units from the water and
37、 lower the temperature to (- 15 3) C within 2 h 20 min; maintain the test units at (- 15 3) C for 2 h 20 min; immerse the test units in water at (20 3) C and raise the temperature of water to (15 3) C for at least 2 h 20 min. Repeat the cycle 25 times. Condition the test units for 3 days in standard
38、 conditions after the last cycle and prior to test examine them and record a brief description of surface appearance of the specimen. Determine the flexural strength in accordance with 7.3 and the compressive strength in accordance with 7.4. 8 Evaluation of results 8.1 Flexural strength The flexural
39、 strength (Rf) is calculated from: N/mmbLF5,13f=fR (1) where: b is the length of the side of the square section of the prism, in millimetres; Ffis the load applied to the middle of the prism at fracture, in newtons; BS EN 12808-3:2008EN 12808-3:2008 (E) 7 L is the distance between the supports, in m
40、illimetres. Calculate the mean of the three determinations to the nearest 0,1 N /mm2. 8.2 Compressive strength The compressive strength (Rc) is calculated from: N/mm6001Fc=cR (2) where: Fcis the maximum load at fracture, in newtons; 1 600 = 40 mm x 40 mm is the area of the platens or auxiliary plate
41、s, in square millimetres. Calculate the mean of the six results obtained from the test to the nearest 0,1 N / mm2. 9 Test report The test report shall provide the following information: a) number, title and issue of this European Standard; b) place and date of sampling; c) type of grout, commercial
42、designation and manufacturer name; d) identification of the test sample; e) handling and storage of samples before testing; f) test conditions; g) date of testing; h) amount of water or liquid used for preparing the grout; i) result of the visual inspection of the specimen before testing; j) test re
43、sults (individual and mean values) for each condition in newtons per square millimetres (N/mm2); k) any other factor that could have influenced the result. BS EN 12808-3:2008EN 12808-3:2008 (E) 8 Dimensions in millimetres Figure 1 Arrangement of loading for determination of flexural strength Key 1 B
44、all bearings 2 Sliding assembly 3 Return spring 4 Spherical seating of machine 5 Upperplaten of machine 6 Spherical seating of the jig 7 Upperplaten of the jig 8 Specimen 9 Lower plate 10 Lower platen of the jig 11 Lower platen of the machine Figure 2 Typical jig for compressive strength testing BS
45、EN 12808-3:2008EN 12808-3:2008 (E) 9 Bibliography 1 EN 1348, Adhesives for tiles - Determination of tensile adhesion strength for cementitious adhesives BS EN12808-3:2008BSI GroupHeadquarters 389Chiswick High Road,London, W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 - British Standards Insti
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