EN 1015-9-1999 en Methods of Test for Mortar for Masonry - Part 9 Determination of Workable Life and Correction Time of Fresh Mortar (Incorporates Amendment A1 2006)《圬工灰浆试验方法 第9部分 .pdf

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1、BRITISH STANDARD BS EN 1015-9:1999 Incorporating amendment no. 1 Methods of test for mortar for masonry Part 9: Determination of workable life and correction time of fresh mortar The European Standard EN 1015-9:1999, incorporating amendment A1:2006, has the status of a British Standard ICS 91.100.10

2、 BS EN 1015-9:1999 This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 November 1999 BSI 2007 ISBN 0 580 35467 9 National foreword This Bri

3、tish Standard was published by BSI. It is the UK implementation of EN 1015-9:1999, incorporating amendment A1:2006. It is included in a package of standards relating to masonry mortar and rendering and plastering mortar which supersedes the following British Standards which are withdrawn. BS 4551-1:

4、1998, Methods of testing mortars, screeds and plasters Part 1: Physical testing; BS 4721:1981, Specification for ready-mixed building mortars; BS 5838-2:1980, Specification for dry packaged cementitious mixes Part 2: Prepacked mortar mixes. The start and finish of text introduced or altered by amend

5、ment is indicated in the text by tags !“. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“. The UK participation in its preparation was entrusted by Technical Committee B/519, Masonry and associated testing, t

6、o Subcommittee B/519/2, Mortar. 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 contract. Users are responsible for its correct application. Compliance with a British

7、Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. Date Comments 16878 31 January 2007 See national forewordCEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de St

8、assart 36, B-1050 Brussels 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1015-9:1999 E EUROPEAN STANDARD EN 1015-9 NORME EUROPE ENNE EUROPA ISCHE NORM August 1999 ICS 91.100.10 English version Methods of test for mortar for

9、masonry Part 9: Determination of workable life and correction time of fresh mortar Me thodes dessai des mortiers pour mac onnerie Partie 9: De termination de la pe riode douvrabilite et du temps ouvert du mortier frais Pru fverfahren fu rM o rtel fu r Mauerwerk Teil 9: Bestimmung der Verarbeitbarkei

10、tszeit und der Korrigierbarkeitszeit von Frischmo rtel This European Standard was approved by CEN on 8 July 1999. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any a

11、lteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by tr

12、anslation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Irelan

13、d, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. +A1 December 2006Page 2 EN 1015-9:1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 125, Masonry, the Secretariat of which is held by BSI. This European Standard sha

14、ll be given 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

15、 organizations 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. Contents Page F

16、oreword 2 1 Scope 3 2 Normative references 3 3 Principle 3 4 Apparatus 3 5 Sampling, preparation and storage of test samples 3 6 Method A Workable life of general purpose mortar 4 7 Method B Workable life of thin-layer mortar 4 8 Method C Correction time of thin-layer mortar 4 9 Test report 5 Forewo

17、rd to amendment A1 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 ident

18、ical text 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:

19、 Austria, 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. BSI 2007Page 3 EN

20、1015-9:1999 1 Scope This European Standard 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

21、, including those containing mineral binders 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 Part 1: Rendering and plastering mortar with inorganic binding agents. Par

22、t 2: Masonry mortar. 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 consistence of fresh mortar (by flow table). 3 Principle The workable life of a sam

23、ple 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 A Workable life of general purpose mortar 4.1.1 A weighing instrument, p

24、referably 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 mm high. 4.1.3 A stop clock. 4.1.4 A penetration rod, consisting of a ro

25、und 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 angles to the length of the rod. 4.1.5 A loosely fitting brass washer, ap

26、proximately 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 controlled and steady manner over a distance of at least 40 mm. (See Figure 1.)

27、 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 time of thin-layer mortar 4.3.1 Masonry units, of the material to be us

28、ed 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 1058C 58C, 708C 58C and 608C 58C respectively. 4.3.4 A trowel. 4.3.5 A palette knife.

29、4.3.6 A storage chamber, capable of maintaining a temperature of 208C 28C and a relative humidity of 65 % 5% . 5 Sampling, preparation and storage of test samples 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, whiche

30、ver 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 laboratory. The flow value of the mortar in the bulk test sample shall be determined in accordance wi

31、th 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 retarded), and pre-batched air-lime/sand wet mortars when not gauged with hydraulic binders, shall be test

32、ed within their specified workable life.!The following referenced documents are indispensable 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 771

33、, Specification for masonry units. ! “ EN 998-1, Specification for mortar for masonry ! “ EN 998-2, Specification for mortar for masonry ! “ BSI 2007Page 4 EN 1015-9:1999 The length of mixing period shall be measured from the moment all constituents are introduced into the mixer. Beford testing, the

34、 batch shall be gently stirred by hand using a trowel or palette knife for 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 p

35、urpose mortar 6.1 General The workable 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

36、surface for the required number 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. S

37、tore the filled moulds in air at a temperature of 208C 28C 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 th

38、e mould or from the position of 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

39、 scale in kilograms. Correct this reading, if necessary, for the mass of the filled mould, and then divide it by 3 to express the resistance to penetration in N/mm 2 . For a non-retarded mortar measure the resistance to penetration at intervals of 15 min, starting at 30 min before the declared worka

40、ble life, until it exceeds the prescribed limit of resistance (see 6.3). 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 fro

41、m the 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/mm 2 by interpolation of the results

42、 immediately 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 measur

43、ed by the 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

44、in a bucket, covered with a moist cloth, and stored in air at a temperature of 208C 28C. 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 com

45、pletion 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 ro

46、unded to 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 ma

47、sonry unit 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 mm3 50 mm3 50 mm from the specified masonry units ensuring that the face to be used as the contact face is o

48、ne from the original bed face. Before performing the test, dry the prescribed masonry units and cubes in an oven at the temperature shown in Table 1. BSI 2007Page 5 EN 1015-9:1999 1) This information is contained on the certificate of sampling (see EN 1015-2). Table 1 Drying temperatures for masonry

49、 units and cube specimens Masonry unit material Drying temperature 8C Clay 105 5 Calcium silicate Autoclaved aerated concrete Natural stone 70 5 Aggregate concrete Manufactured stone 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 co