DIN EN 1543-1998 Products and systems for the protection and repair of concrete structures - Test methods - Determination of tensile strength development for polymers German versio.pdf

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1、DEUTSCHE NORM Februarv 1998 DIN EN 1543 Products and systems for the protection and repair of concrete structures Test methods - Determination of tensile strength development for polymers English version of DIN EN 1543 ICs 91.080.40; 91.1 00.30 Descriptors: Concrete structures, repair, protection, t

2、esting. Produkte und Systeme fr den Schutz und die Instandsetzung von Betontragwerken - Prfverfahren - Bestimmung der Zugfestigkeits- entwicklung von Polymeren European Standard EN 1543 : 1998 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard ha

3、s been prepared by CEN/TC 104. The responsible German body involved in its preparation was the Normenausschu Bauwesen (Building and Civil Engineering Standards Committee). EN comprises 8 pages. No pari of this standard may be reproduced without the prior permission of Ref. No. DIN EN 1543: 1998-0 V

4、Deutsches Institut fr Nonung e. V., Berlin. Luth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen). English price group 06 - Sales No . . 1106 07.98 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1543 January 1998 ICs 91.080.40 Descriptors: Concrete

5、 structures, repair, protection, testing. English version Products and systems for the protection and repair of concrete structures Test met hods Determination of tensile strength development for polymers Produits et systmes pour la protec- tion et la rparation des structures en bton - Mthodes dessa

6、i - Dtermi- nation du dveloppement de la rsistance en traction des polymres Produkte und Systeme fr den Schutz und die Instandsetzung von Betontragwerken - Prfverfahren - Bestimmung der Zugfestigkeits- entwicklung von Polymeren This European Standard was approved by CEN on 1997-1 2-20. CEN members a

7、re bound to comply with the CENKENELEC 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 stand- ards may be obtained on application t

8、o the Central Secretariat or to any CEN member. The European Standards exist 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 Central Secretariat has the same s

9、tatus as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European C

10、ommittee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, 8-1050 Brussels O 1998. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN 1543 : 1998 E Page 2 EN 1

11、543 : 1998 Contents Foreword 2 1 Scope 3 2 Test principle . 3 3 General requirements for testing . 3 3.1 Laboratory 3.2 Apparatus 3 3.3 Materials 3 4 Test procedure for the determination of the development of strength . 4 4.1 Preparation of the resin 4 4.2 Mixing 4 4.4 Cleaning of the piston and of

12、the rising main . 4 4.5 Filling the moulds . 4 5 Measurement of the development of strength . 4 6 Calculation . 5 4.3 Preparation of the moulds . . 4 7 Test report 5 Annex A (informative) Bibliography . 8 Foreword This European Standard has been prepared by Technical Committee CENTTC 104 “Concrete (

13、performance. production. placing and compliance criteria)“. the secretariat of which is held by DIN . 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 July 1998. and conflicting national standards

14、shall be withdrawn at the latest by July 1998 . According to the CENEENELEC Internal Regulations. the national standards organizations of the following countries are bound to implement this European Standard: Austria. Belgium. Czech Republic. Denmark. Finland. France. Germany. Greece. Iceland. Irela

15、nd. Italy. Luxembourg. Netherlands. Norway. Portugal. Spain. Sweden. Switzerland and the United Kingdom . Page 3 EN 1543 : 1998 1 Scope This European Standard specifies the method for determining the development of tensile strength during cure of resins, such as epoxy resins. 2 Test principle The de

16、velopment of tensile strength is determined by measuring the tensile strength of the resin system at various ages of cure, and by interpolation arriving at the time to achieve the strength of 3 N/rnm2. This test deals with two component resins for injection. 3 General requirements for testing 3.1 La

17、boratory - the laboratory in which these tests will be done shall be equipped with a testing machine (see Annex A). A self aligning tensile strength test shall be carried out with a deformation velocity of 0,l mmmin ; - a conditioning room for resins before testing ; - the testing machine shall be e

18、quipped with a temperature controlled cabinet which allows the maintenance of a constant temperature from (5 i 1) “C to (21 f 2) OC, or other temperatures, providing all parties concerned agree. 3.2 Apparatus a) Testing machine (see Annex A) , by means of a centric tensile test at a deformation rate

19、 of 0,l mm/min ; b) stopwatch. The development of strength is measured with the apparatus shown in figure 1. The apparatus consists of at least six moulds: cavities and pistons as dimensioned in figure 1 The upper fixing device shall be constructed with universal joints in the tensile rod. All parts

20、 shall be made of steel. The mould has a depth of 2”.”mm and a diameter of 25,”*” mm (see figure 2). The piston shall have a diameter of 25, mm (see figure 3). 3.3 Materials Two component epoxy resins or other, as specified. Page 4 EN 1543 : 1998 4 Test procedure for the determination of the develop

21、ment of strength 4.1 Preparation of the resin The two components shall be prepared in accordance with the technical data sheet of the manufacturer of the product. The two component resins and the test apparatus shall be maintained at the selected test temperature for a minimum of 24 h before mixing

22、the resins. The temperature designated for the tests are (5 f 1) OC, (15 f 2) OC, (21 f 2) OC, but other suitable temperatures may be selected providing all parties concerned agree. 4.2 Mixing The base and hardener components shall be carefully mixed together, by means of a slowly rotating electric

23、stirrer and paddle, in accordance with the manufacturers recommandations . To complete the mixing process, the resin shall be poured from one can to another and mixed again for 30 s. Start the stopwatch at the end of the mixing. 4.3 Preparation of the moulds The cavity of the mould and the faces of

24、the piston shall be abraded to provide a mechanical key. To prevent adhesion of excess of resin, the upper face of the mould plate shall be lightly smeared with a release agent. 4.4 Cleaning of the piston and of the rising main Remaining resin at the piston shall be removed by solvent (e. g. 70 % di

25、chloromethane, 20 % formic acid, 10% trichlorethylene) or other suitable solvent. 4.5 Filling the moulds Immediately after mixing, the resin shall be poured into a 2 mm deep, 25 mm diameter recess to fill up about 1 mm. The piston shall then be carefully lowered into position until its shoulder rest

26、s upon the upper face of the mould plate displacing excess resin through the central hole. Storing and testing of the prepared specimen shall be done at the same temperature as described in 4.1. 5 Measurement of the development of strength The time of cure shall be measured from the completion of th

27、e mixing. For the validity of the test, it is necessary to get at least six correct results at each temperature. Page 5 EN 1543 : 1998 At various ages of cure, the resin mould and piston shall be fixed to the tensile machine and the tensile strength measured, a tensile load is applied until failure

28、occurs. The velocity of the deformation is O. 1 mm/min. The maximum value of the tensile force shall be recorded. The tensile strength shall be calculated in relation to the surface area of the piston. The time interval between tests shall be adjusted to give a spread of at least six results within

29、the range “O N/mm2 to 5,O N/mm2 “ (one below 1 N/mm2 and one above 5 N/mm2 ). 6 Calculation The results shall be plotted as a graph tensile strength against cure time. The time to reach 3 N/mm2 is determined from the graph by interpolation and given to an accuracy of 1 min, this being done for each

30、temperature. 7 Testreport The report shall contain the following informations : -the identity and source of the product ; - reference to this European Standard ; -the date and place of sampling and testing ; -the temperature of testing ; -the mixing time ; - a plot of tensile strength against cure t

31、ime for each test temperature ; - the rate of development of strength of 3 Nlmm2 ; - the diameter and depth of each mould ; - the interpolated cure time in minutes to reach a tensile strength of 3 N/mm2 Page 6 EN 1543 : 1998 h Detail A 4 3 I 7 5 1 tension device with universal joint 2 connecting bol

32、t 3 centring screw 4 epoxy resins 5 upper part : tensile machine 6 lower part : mould clamping device and tensile machine 7 connecting piece 8 test piston 9 clamping device 10 mould Figure 1: Equipment for the determination of the strength development Page 7 EN 1543 : 1998 Dimensions in mm U I -4 I -6- I -& -8 - -0 I 4 Figure 2: Mould Page 8 EN 1543 : 1998 Dimensions in mm II I I 45 Figure 3: Piston Annex A (informative) Bibliography l Requirements for machines for tension and compression testing of materials (International Organization of Metrology, R 65, 1985)