BS EN 1543-1998 Products and systems for the protection and repair of concrete structures Test methods Determination of tensile strength development for polymers《混凝土结构件保护和修整用的产品和设备.pdf

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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 1543:1998 The Europ

2、ean Standard EN 1543:1998 has the status of a British Standard ICS 91.080.40; 91.100.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Products and systems for the protection and repair of concrete structures Test methods Determination of tensile strength development for poly

3、mersThis 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 1998 BSI 1998 ISBN 0 580 29765 9 BS EN 1543:1998 Amendments issued since p

4、ublication Amd. No. Date Text affected National foreword This British Standard is the English language version of EN 1543:1998. No existing standard is superseded. The UK participation in its preparation was entrusted by Technical Committee B/517, Concrete, to Subcommittee B/517/8, Repair and protec

5、tion of concrete structures, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments

6、and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue

7、under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correc

8、t application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 7 and a back cover.CEN European Committee for Standardization Comite Europe en de

9、Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 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 EUROPEAN STANDARD EN 1543 NORME EUROPE ENNE EUROPA ISCHE NOR

10、M January 1998 ICS 91.080.40 Descriptors: Concrete structures, repairs, protection, materials, polymers, materials, polymers, epoxy resins, products for conrete construction, tests, determination, tensile strength, hardening English version Products and systems for the protection and repair of concr

11、ete structures Test methods Determination of tensile strength development for polymers Produits et syste mes pour la protection et la re paration des structures en be ton Me thodes dessais De termination du de veloppment de la re sistance en traction des polyme res Produkte und Systeme fu r den Schu

12、tz und die Instandsetzung von Betontragwerken Pru fverfahren Bestimmung der Zugfestigkeitsenwicklung von Polymeren This European Standard was approved by CEN on 20 December 1997. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

13、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 Central Secretariat or to any CEN member. This European Standard exists in three official versions (Eng

14、lish, 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 status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark,

15、Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.Page 2 EN 1543:1998 BSI 1998 Foreword This European Standard has been prepared by Technical Committee CEN/TC 104, Concrete (performance, production, pla

16、cing 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 shall be withdrawn at the late

17、st by July 1998. According to the CEN/CENELEC 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, Ireland, Italy, Luxembourg, Netherl

18、ands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Test principle 3 3 General requirements for testing 3 3.1 Laboratory 3 3.2 Apparatus 3 3.3 Materials 3 4 Test procedure for the determination of the development of strength 6 4.1 Preparation o

19、f the resin 6 4.2 Mixing 6 4.3 Preparation of the moulds 6 4.4 Cleaning of the piston and of the rising main 6 4.5 Filling the moulds 6 5 Measurement of the development of strength 7 6 Calculation 7 7 Test report 7 Annex A (informative) Bibliography 7Page 3 EN 1543:1998 BSI 1998 1 Scope This Europea

20、n Standard specifies the method for determining the development of tensile strength during cure of resins, such as epoxy resins. 2 Test principle The development of tensile strength is determined by measuring the tensile strength of the resin system at various ages of cure, and by interpolation arri

21、ving at the time to achieve the strength of 3 N/mm 2 . This test deals with two component resins for injection. 3 General requirements for testing 3.1 Laboratory the laboratory in which these tests will be done shall be equipped with a testing machine (see annex A). A self aligning tensile strength

22、test shall be carried out with a deformation velocity of 0,1 mm/min; a conditioning room for resins before testing; the testing machine shall be equipped with a temperature controlled cabinet which allows the maintenance of a constant temperature from (5 1)8C to (21 2)8C, or other temperatures, prov

23、iding all parties concerned agree. 3.2 Apparatus a) Testing machine (see annex A), by means of a centric tensile test at a deformation rate of 0,1 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: caviti

24、es and pistons as dimensioned in Figure 1. The upper fixing device shall be constructed with universal joints in the tensile rod. All parts shall be made of steel. The mould has a depth of 2 mm and a diameter of 0 +0,05 25 mm (see Figure 2). 0 +0,05 The piston shall have a diameter of 25 mm (see Fig

25、ure 3). 20,05 0 3.3 Materials Two component epoxy resins or other, as specified. BSI 1998 Page 4 EN 1543:1998 1 tension device with universal joint 2 connecting bolt 3 centring screw 4 detail “A” 5 upper part : tensile machine 6 lower part : mould clamping device and tensile machine 7 connecting pie

26、ce 8 test piston 9 clamping device 10 mould EP epoxy resins Figure 1 Equipment for the determination of the strength developmentPage 5 EN 1543:1998 BSI 1998 Dimensions in mm Figure 2 MouldPage 6 EN 1543:1998 BSI 1998 Dimensions in mm Figure 3 Piston 4 Test procedure for the determination of the deve

27、lopment 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 mixi

28、ng the resins. The temperatures designated for the tests are (5 1) 8C, (15 2)8C, (21 2)8C, 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 stir

29、rer and paddle, in accordance with the manufacturers recommendations. 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 the p

30、iston 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 % dichloro

31、methane, 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 rests upon

32、 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.Page 7 EN 1543:1998 BSI 1998 5 Measurement of the development of strength The time of cure shall be measured fro

33、m the completion of the mixing. For the validity of the test, it is necessary to get at least six correct results at each temperature. 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

34、occurs. The velocity of the deformation is 0,1 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 t

35、he range 0 N/mm 2 to 5,0 N/mm 2 (one below 1 N/mm 2 and one above 5 N/mm 2 ). 6 Calculation The results shall be plotted as a graph tensile strength against cure time. The time to reach 3 N/mm 2 is determined from the graph by interpolation and given to an accuracy of 1 min, this being done for each

36、 temperature. 7 Test report 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 time for each

37、 test temperature; the rate of development of strength of 3 N/mm 2 ; the diameter and depth of each mould; the interpolated cure time in minutes to reach a tensile strength of 3 N/mm 2 . Annex A (informative) Bibliography 1 Requirements for machines for tension and compression testing of materials (

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