DIN EN 1015-9-2007 Methods of test for mortar for masonry - Part 9 Determination of workable life and correction time of fresh mortar (includes Amendment A1 2066) English version o.pdf

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1、May 2007DEUTSCHE NORM English price group 7No part of this standard 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!,xbJ“9856339www.d

2、in.deDDIN EN 1015-9Methods of test for mortar for masonry Part 9: Determination of workable life and correction time of freshmortar (includes Amendment A1:2006)English version of DIN EN 1015-9:2007-05Prfverfahren fr Mrtel fr Mauerwerk Teil 9: Bestimmung der Verarbeitbarkeitszeit und der Korrigierbar

3、keitszeit vonFrischmrtel (enthlt nderung A1:2006)Englische Fassung DIN EN 1015-9:2007-05SupersedesDIN EN 1015-9:1999-10www.beuth.deDocument comprises 11 pages 08.07DIN EN 1015-9:2007-05 2 National foreword This standard has been prepared by CEN/TC 125 “Masonry” (Secretariat: BSI, United Kingdom). Th

4、e responsible German body involved in its preparation was the Normenausschuss Bauwesen (Building and Civil Engineering Standards Committee), Technical Committees NA 005-06-01 AA Mauerwerksbau and NA 005-06-04 AA Prfverfahren. This European Standard is part of a series of standards specifying methods

5、 used to check compliance of mortar for masonry with the requirements specified in the relevant product standard. Amendment A1:2006 has been integrated in this standard and is marked by a vertical line in the left margin. Amendments This standard differs from DIN EN 1015-9:1999-10 as follows: a) In

6、clause 2, the explanatory text has been amended. b) All occurrences of “pr” preceding EN references have been deleted throughout the document. c) In 8.2, the text of item a) has been supplemented. Previous editions DIN EN 1015-9: 1999-10 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1015-9 Au

7、gust 1999 +A1 December 2006 ICS 91.100.10 English version Methods of test for mortar for masonry Part 9: Determination of workable life and correction time of fresh mortar Mthodes dessai des mortiers pour maonnerie Partie 9: Dtermination de la priode douvrabilit et du temps ouvert du mortier frais P

8、rfverfahren fr Mrtel fr Mauerwerk Teil 9: Bestimmung der Verarbeitbarkeitszeit und der Korrigierbarkeitszeit von Frischmrtel EN 1015-9:1999 was approved by CEN on 1999-07-08 and Amendment A1 on 2006-10-26. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the

9、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 Management Centre or to any CEN member. The European Standards exist in thre

10、e 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austr

11、ia, Belgium, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, and the United Kingdom. EUROPEAN CO

12、MMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1015-9:1999 + A1:2006 EEN 1015-9:1

13、999 + A1:2006 (E) 2 Contents Page Foreword to EN 1015-9:19993 Foreword to EN 1015-9:1999/A1:2006.3 1 Scope 3 2 Normative references 3 3 Principle4 4 Apparatus .4 5 Sampling, preparation and storage of test samples5 6 Method A Workable life of general purpose mortar5 7 Method B Workable life of thin-

14、layer mortar6 8 Method C Correction time of thin-layer mortar6 9 Test report 8 EN 1015-9:1999 + A1:2006 (E) 3 Foreword to EN 1015-9:1999 This European Standard has been prepared by Technical Committee CEN/TC 125 “Masonry”, the secretariat of which is held by BSI. This European Standard shall be give

15、n the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2000, and conflicting national standards shall be withdrawn at the latest by December 2001. According to the CEN/CENELEC Internal Regulations, the national standards organizat

16、ions 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 and the United Kingdom. Foreword to EN 1015-9:199

17、9/A1:2006 This document (EN 1015-9:1999/A1:2006) has been prepared by Technical Committee CEN/TC 125 “Masonry”, the secretariat of which is held by BSI. This Amendment to the European Standard EN 1015-9:1999 shall be given the status of a national standard, either by publication of an identical text

18、 or by endorsement, at the latest by June 2007, and conflicting national standards shall be withdrawn at the latest by June 2007. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria,

19、 Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. 1 Scope This European Stand

20、ard specifies methods for determining the workable life and correction time of freshly mixed mortars (in the following referred to as fresh mortars). Method A is a method for the determination of the workable life of general purpose masonry or rendering mortars, including those containing mineral bi

21、nders and both dense and lightweight aggregates. Methods B and C are methods for the determination of the workable life and correction time for thin layer mortars. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references,

22、only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 771, Specification for masonry units EN 998-1, Specification for mortar for masonry Part 1: Rendering and plastering mortar with inorganic binding agents EN 99

23、8-2, Specification for mortar for masonry Part 2: Masonry mortar EN 1015-9:1999 + A1:2006 (E) 4 EN 1015-2, Methods of test for mortar for masonry Part 2: Bulk sampling of mortars and preparation of test mortars EN 1015-3:1998, Methods of test for mortar for masonry Part 3: Determination of consisten

24、ce of fresh mortar (by flow table) 3 Principle The workable life of a sample of fresh mortar, initially brought to a defined flow value, is measured by the time in minutes at which it reaches a defined limit of stiffness or workability during a defined type test. 4 Apparatus 4.1 Apparatus for Method

25、 A Workable life of general purpose mortar 4.1.1 A weighing instrument, preferably with a tare device, reading to at least 15 kg with graduations of not greater than 100 g. 4.1.2 Disposable, rigid and open topped moulds or containers with an internal diameter of not less than 75 mm and 50 mm to 100

26、mm high. 4.1.3 A stop clock. 4.1.4 A penetration rod, consisting of a round brass rod, approximately 5 mm in diameter and with a total length of approximately 65 mm, its lower end enlarged to a diameter of 6,175 mm 0,025 mm over a length of 25 mm 0,25 mm and with the penetrating face flat at right a

27、ngles to the length of the rod. 4.1.5 A loosely fitting brass washer, approximately 20 mm in external diameter, rests on the stop formed at the change in diameter of the rod. The rod is held vertically in a device such as a lever type drill stand that enables it to be lowered vertically in a control

28、led and steady manner over a distance of at least 40 mm (see Figure 1). 4.1.6 A palette knife. 4.1.7 A trowel. 4.2 Apparatus for Method B Workable life of thin-layer mortar 4.2.1 A flow table in accordance with EN 1015-3. 4.2.2 A trowel. 4.2.3 A palette knife. 4.3 Apparatus for Method C Correction t

29、ime of thin-layer mortar 4.3.1 Masonry units of the material to be used in practice as substrate for the actual thin-layer mortar. 4.3.2 A weighing instrument, accurate to 0,1 % of the mass of the weighed masonry unit. 4.3.3 A ventilated oven, capable of maintaining temperatures of 105 C 5 C, 70 C 5

30、 C and 60 C 5 C respectively. 4.3.4 A trowel. EN 1015-9:1999 + A1:2006 (E) 5 4.3.5 A palette knife. 4.3.6 A storage chamber capable of maintaining a temperature of 20 C 2 C and a relative humidity of 65 % 5 %. 5 Sampling, preparation and storage of test samples The fresh mortar for this test shall h

31、ave 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 be obtained either by reduction of the bulk test sample (see EN 1015-2) using a sample divider or by quartering or by preparation from dry constituents and water in the la

32、boratory. The flow value of the mortar in the bulk test sample shall be determined in accordance with EN 1015-3 and reported. Laboratory mixed samples shall, before testing, be brought to a defined flow value as specified in EN 1015-2. Ready to use mortars (factory-made wet mortars which are retarde

33、d), and pre-batched air-lime/sand wet mortars when not gauged with hydraulic binders, shall be tested within their specified workable life. The length of mixing period shall be measured from the moment all constituents are introduced into the mixer. Before testing, the batch shall be gently stirred

34、by hand using a trowel or palette knife in 5 s to 10 s to counteract any false setting etc., but without any additional mixing of the batch. Any deviation from the mixing procedure shall be noted. Two test samples shall be tested. 6 Method A Workable life of general purpose mortar 6.1 General The wo

35、rkable life of the fresh mortar is measured by the time in minutes at which it reaches a defined limit of resistance to penetration of a standard rod forced into it. 6.2 Procedure Fill sufficient moulds with test mortar and any control mix to provide adequate area of surface for the required number

36、of penetrations of the rod. Fill each mould in about 10 increments, minimizing excess mortar to be struck off, and tapping the mould on the bench four times after each increment. Strike off the surface plane and level with the top of the mould using a palette knife. Store the filled moulds in air at

37、 a temperature of 20 C 2 C and a relative humidity of not less than 95 %, e.g. in a sealed polyethylene bag. Place a mould on the scale under the penetration rod so that the portion of the sample surface immediately beneath the rod is at least 20 mm from the rim of the mould or from the position of

38、any previous penetrations. Adjust the tare device or record the mass of the filled mould. By means of the lever on the drill stand, lower the penetration rod slowly into the sample until the loose washer just touches the surface (see Figure 1). Note the reading of the scale in kilograms. Correct thi

39、s reading, if necessary, for the mass of the filled mould, and then divide it by 3 to express the resistance to penetration in N/mm2. For a non-retarded mortar measure the resistance to penetration at intervals of 15 min, starting at 30 min before the declared workable life, until it exceeds the pre

40、scribed limit of resistance (see 6.3). EN 1015-9:1999 + A1:2006 (E) 6 For retarded mortars, check the penetration intermittently, at convenient times, until the resistance starts to increase then proceed as described above. 6.3 Calculation and expression of results Measure the workable life from the

41、 completion of either the addition of water to the dry constituents, or the addition of cement or gypsum to a wet mix of lime and/or sand as follows. Determine the time in minutes, rounded to the nearest minute, to give the resistance to penetration of 0,5 N/mm2by interpolation of the results immedi

42、ately below and above this figure. Calculate the mean value from the individual values of each mortar test sample, all values rounded to the nearest minute. The mean value is the workable life of the mortar. 7 Method B Workable life of thin-layer mortar 7.1 General The workable life is measured by t

43、he time in minutes at which the flow value of the mortar differs by 30 mm from the initial flow value determined 10 min after mixing the batch. 7.2 Procedure Determine the flow value, in accordance with clause 6 of EN 1015-3:1998 at intervals of 15 min. During the test period keep the mortar in a bu

44、cket, covered with a moist cloth, and stored in air at a temperature of 20 C 2 C. Before each test the mortar mix may be given an additional mixing by hand. 7.3 Calculation and expression of results Determine the time in minutes, rounded to the nearest minute and measured from the time of completion

45、 of the mixing, that the flow value of the mortar differs by 30 mm from the initial flow value determined 10 min after mixing, by interpolation of the results immediately below and above this figure. Calculate the mean value from the individual values of each mortar test sample, all values rounded t

46、o the nearest minute. The mean value is the workable life of the mortar. 8 Method C Correction time of thin-layer mortar 8.1 Principle The correction time is measured by the time in minutes at which 50 % of the contact surface of a cube, placed on a layer of mortar applied on the specified masonry u

47、nit substrate, and then removed, is covered with adhering mortar. The method is not applicable where perforated masonry units are being used. 8.2 Procedure Cut cubes with dimensions 50 mm 50 mm 50 mm from the specified masonry units ensuring that the face to be used as the contact face is one from t

48、he original bed face. Before performing the test, dry the prescribed masonry units and cubes in an oven at the temperature shown in Table 1. EN 1015-9:1999 + A1:2006 (E) 7 Table 1 Drying temperatures for masonry units and cube specimens Masonry unit material Drying temperature C Clay Calcium silicat

49、e Autoclaved aerated concrete 105 5 Natural stone Aggregate concrete Manufactured stone 70 5 Masonry units with organic constituents 60 5 Consider the masonry units to have reached constant mass if two consecutive weighings, two hours apart during the drying, do not differ by more than 0,2 % of their mass. Then condition the masonry units by storage in air of temperature 20 C 2 C and 65 % 5 % relative humidity for two days. Carry out the test at an air temperature of 20 C 2 C