DIN EN 1015-12-2016 Methods of test for mortar for masonry - Part 12 Determination of adhesive strength of hardened rendering and plastering mortars on substrates German version EN.pdf

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1、December 2016 English price group 8No 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 91.100.10!%U“2595098www.din.deDI

2、N EN 1015-12Methods of test for mortar for masonry Part 12: Determination of adhesive strength of hardened rendering and plastering mortars on substrates;English version EN 101512:2016,English translation of DIN EN 1015-12:2016-12Prfverfahren fr Mrtel fr Mauerwerk Teil 12: Bestimmung der Haftzugfest

3、igkeit zwischen Putz und Untergrund;Englische Fassung EN 101512:2016,Englische bersetzung von DIN EN 1015-12:2016-12Mthodes dessai des mortiers pour maonnerie Partie 12: Dtermination de ladhrence des mortiers denduit durcis appliqus sur supports;Version anglaise EN 101512:2016,Traduction anglaise de

4、 DIN EN 1015-12:2016-12SupersedesDIN EN 101512:200006See start of applicationwww.beuth.deDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.Document comprises 12 pages 11.16 2A comma is used as the decimal marker. Start of application

5、The start of application of this standard is 2016-12-01. For DIN 1015-12:2000-06 there is a transition period ending on 2018-03-31. National foreword This document (EN 1015-12:2016) has been prepared by Technical Committee CEN/TC 125 “Masonry” (Secretariat: BSI, United Kingdom). The responsible Germ

6、an body involved in its preparation was DIN-Normenausschuss Bauwesen (DIN Standards Committee Building and Civil Engineering), Working Committee NA 005-06-04 AA Prfverfahren (SpA zu CEN/TC 125/WG 4). Attention is drawn to the possibility that some elements of this document may be the subject of pate

7、nt rights. DIN and/or DKE shall not be held responsible for identifying any or all such patent rights. Amendments This standard differs from DIN EN 1015-12:2000-06 as follows: a) the requirements for the choice of metal used for the pull-head plates have been relaxed; b) the temperature range for st

8、orage and curing of the specimens has been slightly extended; c) during application of the mortar and during storage and testing, the substrate may now be either horizontal or vertical (formerly only was specified). Previous editions DIN 18555-6: 1987-11 DIN EN 1015-12: 2000-06 DIN EN 1015-12:2016-1

9、2 verticalEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1015-12 June 2016 ICS 91.100.10 Supersedes EN 1015-12:2000English Version Methods of test for mortar for masonry - Part 12: Determination of adhesive strength of hardened rendering and plastering mortars on substrates Mthodes dessai des

10、mortiers pour maonnerie - Partie 12 : Dtermination de ladhrence des mortiers denduit durcis appliqus sur supports Prfverfahren fr Mrtel fr Mauerwerk - Teil 12: Bestimmung der Haftzugfestigkeit This European Standard was approved by CEN on 9 April 2016. CEN members are bound to comply with the CEN/CE

11、NELEC 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-CENELEC Management Centre

12、 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 into its own language and notified to the CEN-CENELEC Management Centre has the same status as the o

13、fficial 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, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlan

14、ds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, 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 2016 CEN All rights

15、of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1015-12:2016 Ezwischen Putz und UntergrundEN 1015-12:2016 (E) 2 Contents Page European foreword . 3 1 Scope 5 2 Normative references 5 3 Principle . 5 4 Symbols . 5 5 Apparatus . 5 6 Sampling and sa

16、mple preparation 6 6.1 General 6 6.2 Laboratory prepared mortars 6 6.3 Mortars, other than laboratory prepared mortars . 7 7 Preparation and storage of test specimens . 7 7.1 Substrate 7 7.2 Application 7 7.3 Test areas . 7 7.3.1 General 7 7.3.2 Fresh mortar . 7 7.3.3 Hardened mortars 8 7.4 Storage

17、and curing conditions 8 8 Procedure. 8 9 Expression of results Adhesive strength . 8 10 Test report 10 DIN EN 1015-12:2016-12 EN 1015-12:2016 (E) 3 European foreword This document (EN 1015-12:2016) has been prepared by Technical Committee CEN/TC 125 “Masonry”, the secretariat of which is held by BSI

18、. 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 December 2016, and conflicting national standards shall be withdrawn at the latest by March 2018. This document supersedes EN 1015-12:2000. The fo

19、llowing technical changes have been done in this new edition: There has been a relaxation in the choice of metal for the pull-head plates. The temperature range for storage and curing the specimens has been extended slightly. The substrates may be rendered stored and tested either in the vertical or

20、 horizontal attitude instead of the vertical only. EN 1015, Methods of test for mortar for masonry, currently comprises the following parts: Part 1: Determination of particle size distribution (by sieve analysis); Part 2: Bulk sampling of mortars and preparation of test mortars; Part 3: Determinatio

21、n of consistence of fresh mortar (by flow table); Part 4: Determination of consistence of fresh mortar (by plunger penetration); Part 6: Determination of bulk density of fresh mortar; Part 7: Determination of air content of fresh mortar; Part 9: Determination of workable life and correction time of

22、fresh mortar; Part 10: Determination of dry bulk density of hardened mortar; Part 11: Determination of flexural and compressive strength of hardened mortar; Part 12: Determination of adhesive strength of hardened rendering and plastering mortars on substrates (the present document); Part 17: Determi

23、nation of water-soluble chloride content of fresh mortars; Part 18: Determination of water absorption coefficient due to capillary action of hardened mortar; Part 19: Determination of water vapour permeability of hardened rendering and plastering mortars; Part 21: Determination of the compatibility

24、of one-coat rendering mortars with substrates. DIN EN 1015-12:2016-12EN 1015-12:2016 (E) 4 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, Croatia, Cyprus, Cz

25、ech 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 and the United Kingd

26、om. DIN EN 1015-12:2016-12 EN 1015-12:2016 (E) 5 1 Scope This European Standard specifies a method for the determination of the adhesive strength between rendering and plastering mortars and a substrate. 2 Normative references The following documents, in whole or in part, are normatively referenced

27、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 772-11, Methods of test for masonry units - Part 11: Determination of water a

28、bsorption of aggregate concrete, autoclaved aerated concrete, manufactured stone and natural stone masonry units due to capillary action and the initial rate of water absorption of clay masonry units EN 998 (all parts), Specification for mortar for masonry EN 1015-2, Methods of test for mortar for m

29、asonry - Part 2: Bulk sampling of mortars and preparation of test mortars EN 1015-3, Methods of test for mortar for masonry - Part 3: Determination of consistence of fresh mortar (by flow table) EN 1015-11, Methods of test for mortar for masonry - Part 11: Determination of flexural and compressive s

30、trength of hardened mortar 3 Principle The adhesive strength is determined as the maximum tensile stress applied by a direct load perpendicular to the surface of the rendering or plastering mortar on a substrate. The tensile load is applied by means of a defined pull-head plate glued to the test are

31、a of the mortar surface. The adhesive strength obtained is the quotient between the failure load and the test area. 4 Symbols fuis the adhesive strength, (N/mm2); Fuis the failure load, (N); A is the test area of cylindrical specimen, (mm2). 5 Apparatus 5.1 Truncated conical rings, (see Figure 1) ma

32、de of stainless steel or brass, with internal diameter of (50 0,1) mm and (25 0,5) mm in height. The minimum thickness of the mould wall shall be 5,0 mm at the top. The external diameter at the base shall be (51 0,1) mm. 5.2 Circular pull-head plates, made of metal, with diameter of (50 0,1) mm and

33、minimum thickness 10 mm, and with central fitting for connection to the direct pull tensile force apparatus. DIN EN 1015-12:2016-12EN 1015-12:2016 (E) 6 Dimensions in millimetres Figure 1 Sharp-edged, truncated conical ring 5.3 Adhesive based on resin, e.g. epoxy resin or methylmethacrylate resin. 5

34、.4 Core drilling machine, with core drill of nominally 50 mm internal diameter, suitable to cut core samples from hardened mortars and substrates. 5.5 Testing machine for direct pull tensile force test and with suitable capacity and sensitivity for the test as specified in Clause 8. It shall be capa

35、ble of applying the load to the pull-head plate through a suitable fitting that excludes any bending forces. The machine shall comply with the requirements in Table 1. 5.6 Storage chamber, capable of maintaining a temperature of 20 C (+3/-2 C) and at a relative humidity of (65 5) %. Table 1 Requirem

36、ents for testing machine Maximum permissible repeatability of forces as percentage of nominal force Maximum permissible mean error of forces as percentage of nominal force Maximum permissible error of zero force as percentage of maximum force of range % % % 2,0 2,0 0,4 6 Sampling and sample preparat

37、ion 6.1 General The fresh mortar for this test shall have a minimum volume of 1,5 l or at least 1,5 times the quantity needed to perform the test, whichever is the greater, and shall either be obtained by reduction of the bulk test sample (see EN 1015-2) using a sample divider or by quartering or by

38、 preparation from water and the other constituents in the laboratory. Two test samples shall be prepared. 6.2 Laboratory prepared mortars The length of mixing period shall be measured from the moment all the constituents are introduced into the mixer. DIN EN 1015-12:2016-12 EN 1015-12:2016 (E) 7 The

39、 mortar shall be brought to a defined flow value as specified in EN 1015-2 determined in accordance with EN 1015-3 and reported. The test procedure shall not start until at least 10 min after completion of mixing and shall be concluded within the specified workable life of the mortar (preferably wit

40、hin 30 min after completion of mixing), unless otherwise instructed by the manufacturer. 6.3 Mortars, other than laboratory prepared mortars Ready to use mortars (factory-made wet mortars which are retarded), and pre-batched air-lime/sand wet mortars when not gauged with hydraulic binders, shall be

41、used for specimen preparation within their specified workable life. Before testing, the batch shall be gently stirred by hand using a trowel or palette knife for (5 10) s to counteract any false setting, etc., but without any additional mixing of the batch. The flow value of the mortar in the bulk t

42、est sample shall be determined in accordance with EN 1015-3 and reported. 7 Preparation and storage of test specimens 7.1 Substrate For rendering or plastering systems manufactured for a specific background, i.e. clay or calcium silicate masonry units, concrete masonry units, panels or cast in situ

43、concrete, etc., these materials, in an air-dried condition, should be used as test substrates. The water absorption due to capillary action of the units used in the substrate shall be recorded, if known, or tested in accordance with EN 772-11 where appropriate. Where no specific background is prescr

44、ibed rectangular concrete panels shall be used as substrate, with dimensions not less than 550 mm x 150 mm and 50 mm in thickness. The concrete shall be mixed with a water/cement ratio of 0,55 and using normal graded aggregates with maximum particle size of one third of the concrete panel thickness.

45、 The upper surface of the moulded substrate shall be levelled and wood-floated to achieve a suitable surface. Within a period of 6h to 24h lightly brush the surface. The concrete panels shall have an age of not less than 28 d when applying the plastering or rendering system, the panels being cured u

46、nder standardized conditions as described in EN 1015-11. NOTE Concrete panels as a substrate will normally give conservative adhesive strength values. 7.2 Application The fresh mortar mix shall be applied to the prescribed substrate according to the manufacturers recommendations and the intended use

47、. The substrate may be either horizontal or vertical during application. Unless otherwise specified the total thickness of the mortar layer shall be (10 1) mm. 7.3 Test areas 7.3.1 General Circular test areas of approximately 50 mm in diameter shall be cut through the mortar layer, either in the fre

48、sh mortar according to 7.3.2 or in the hardened mortar according to 7.3.3. The diameter of the circular test area shall be recorded for each specimen. Five test areas shall be provided. 7.3.2 Fresh mortar After application and the initial setting of the mortar layer, the truncated conical rings (5.1

49、), cleaned and lubricated with a thin layer of mineral oil, shall be pressed with their sharp edge, slightly rotating, through the fresh mortar layer until full contact with the substrate is reached. The minimum distance DIN EN 1015-12:2016-12 EN 1015-12:2016 (E) 8 between the rings and the free edges of the rendered substrate, and the free distance between the individual rings, shall be 50 mm. The rings shall