1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12189:1999 The Euro
2、pean Standard EN 12189:1999 has the status of a British Standard ICS 91.080.040 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 open timeThis British Standard, having been p
3、repared 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 September 1999 BSI 09-1999 ISBN 0 580 32577 6 BS EN 12189:1999 Amendments issued since publication Amd. No. Date Comments N
4、ational foreword This British Standard is the English language version of EN 12189:1999. The UK participation in its preparation was entrusted by Technical Committee B/517, Concrete, to Subcommittee B/517/8, Repair and protection of concrete, which has the responsibility to: aid enquirers to underst
5、and 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 and promulgate them in the UK. A list of organizations represented on this subcommitte
6、e 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 under the section entitled “International Standards Correspondence Index”, or by using
7、 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 correct application. Compliance with a British Standard does not of itself confer immunity f
8、rom 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. The BSI copyright notice displayed in this document indicates when the document was last issued.EUROPEAN STANDARD EN 12189 NORME EUROPENNE EUROPISCH
9、E NORM May 1999 ICS 91.080.40; 91.100.30 English version Products and systems for the protection and repair of concrete structures Test methods Determination of open time Produits et systmes pour la protection et la rparation des structures en bton Dtermination du temps ouvert Produkte und Systeme f
10、r den Schutz und die Instandsetzung von Betontragwerken Prfverfahren Bestimmung der Offenzeit This European Standard was approved by CEN on 16 April 1999. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the st
11、atus 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 (English, French, German). A
12、 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, Czech Republic, Denmark, Finland,
13、 France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart, 36 B-1050 Brusse
14、ls 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12189:1999 EPage 2 EN 12189:1999 BSI 09-1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 104, Concrete (performance, production, placing an
15、d 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 November 1999, and conflicting national standards shall be withdrawn at the latest
16、by November 1999. 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, Nether
17、lands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. It has been prepared by Subcommittee 8, Products and systems for the protection and repair of concrete structures (Secretariat AFNOR). NOTE This standard should be read together with EN 15041 and prEN 15044. Contents Page Fo
18、reword 2 1 Scope 3 2 Normative references 3 3 Test method 3 4 Equipment 3 5 Test procedure 4 5.1 Sampling material 4 5.2 Number of test specimens 4 5.3 Concrete prisms 4 5.4 Conditioning 4 5.5 Procedure 4 6 Report 5 Annex A (informative) Bibliography 7Page 3 EN 12189:1999 BSI 09-1999 1 Scope This Eu
19、ropean Standard describes a method for the measurement of the open time of structural bonding agents by use of bonded concrete prisms tested in flexure. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative refer
20、ences are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the
21、latest edition of the publication referred to applies. EN 4801, Admixtures for concrete, mortar and grout Test methods Part 1: Reference concrete and reference mortar for testing. prEN 1766, Products and systems for the protection and repair of concrete structures Test methods Reference concretes fo
22、r testing. 3 Test method The open time is defined as the period that elapses between the completion of mixing of the bonding agent and the longest time to closing of the joint which results in a failure plane within the concrete. The open time is measured using the results from tensile bending tests
23、 performed on a series of concrete test prisms which have been bonded using the same mix of bonding agent but with the pairs of prisms being brought together at predetermined intervals after application of the bonding agent. For those test prisms bonded within the open time the tensile bending test
24、should result in fracture in the concrete. When fracture occurs within the bond line it is considered that the test prisms concerned were bonded outside the open time. 4 Equipment 4.1 Steel moulds, for producing concrete test pieces of size 40 mm 40 mm 80 mm. 4.2 Concrete mixer, as in EN 480-1. 4.3
25、Grit blasting equipment. 4.4 A stop clock, calibrated in minutes to a maximum of 120 min. 4.5 Clamping frames, as shown in Figure 1, capable of applying a compressional longitudinal force of 320 N and maintaining this force on the bonded concrete prisms during the tensile bending test. 4.6 Testing m
26、achine, capable applying a force at a rate of (50 10) N/s up to 20 kN during the tensile bending test. 4.7 Steel support frame, support rollers, loading rollers and spreader beam as shown in Figure 2 for four point bending test on bonded concrete prisms. 4.8 Thermometer. 4.9 Relative humidity equipm
27、ent.Page 4 EN 12189:1999 BSI 09-1999 5 Test procedure 5.1 Sampling material The bonding agent to be tested shall be taken from one production batch. 5.2 Number of test specimens Flexural tests shall be carried out on six bonded concrete prisms. The concrete prisms shall be bonded at different time i
28、ntervals after application of the bonding agent (see 5.5). 5.3 Concrete prisms Concrete test prisms, measuring 40 mm 40 mm 80 mm and using reference concrete Type MC (0,40) shall be manufactured and cured for at least 21 days in accordance with prEN 1766. One end face of each prism shall then be gri
29、t blasted in accordance with prEN 1766. 5.4 Conditioning The concrete test prisms and the resin and hardener component of the bonding agent shall be conditioned at the test temperature, which is at the upper limit of the specified application temperature range of the particular formulation under tes
30、t. NOTE The most demanding conditions have been selected for the test, i.e. high strength concrete and the upper limit of the specified application temperature. 5.5 Procedure The components of the bonding agent shall be mixed at the test temperature in accordance with the manufacturers instructions.
31、 Immediately on completion of mixing the stop clock shall be started and after 10 min have elapsed the bonding agent shall be applied in a layer about 2 mm thick to the prepared end face of one concrete prism in each pair. Appropriate spacers shall be used to control the thickness of the bonding age
32、nt. At intervals, for example at 30 min, 45 min, 60 min, 75 min, 90 min and 105 min after application of the bonding agent, the corresponding face of the other concrete prism in each pair shall be placed against the coated face and the two prisms shall be clamped together in the frame shown in Figur
33、e 1 with a clamping force normal to the bonded interface of (320 20) N. This generates a compressive stress of 0,20 N/mm 2in the bond plane. The complete assemblies shall then be cured at the test temperature for 7 days or such other time that may be agreed between interested parties. At the end of
34、the specified curing period the assembly shall be mounted in the support frame as shown in Figure 2 and positioned within the testing machine. The load shall be applied vertically by means of the spreader beam and it shall be increased uniformly at a rate of (50 10) N/s until fracture. Record the po
35、sition of the failure plane for each pair of prisms.Page 5 EN 12189:1999 BSI 09-1999 6 Report The report shall include the following information:a) name and address of the testing laboratory, and the place at which the tests were performed if different from the laboratory address;b) date and identif
36、ication number of the test report;c) name and address of the client;d) identification of the product;e) purpose of the test;f) date of receipt and complete identification of the samples of bonding agents to be tested;g) description and marking of the specimens;h) description of the preparation of th
37、e specimens, including full details of any priming system used and thickness (or mass) of primer or bonding agent applied;i) date of the test performance;j) any deviations from or additions to the test method, and any omissions, together with other information of importance for the interpretation of
38、 the observation and the evaluation of the test result;k) the conditioning, curing and test temperature;l) curing period in days between bonding and testing;m) for each specimen: 1) the elapsed time interval between application of the bonding agent and closing of the joint; 2) the failure load recor
39、ded in the tensile bending test; 3) the position of the failure plane;n) the open time of the structural bonding agent, taken as the longest time interval between application of the bonding agent and closing of the joint which results in a failure plane within the concrete;o) reference to this Europ
40、ean Standard.Page 6 EN 12189:1999 BSI 09-1999 Figure 1 Clamping framePage 7 EN 12189:1999 BSI 09-1999 Key Span between support rollers = 150 mm Span of spreader beam = 50 mm Figure 2 Four point bend test Annex A (informative) Bibliography1 FIP/9/2, Proposal for a standard for acceptance tests and ve
41、rification of epoxy bonding agents for segmental construction. Fdration Internationale de la Prcontrainte, March 1978. 2 EN 15041, Products and systems for the protection and repair of concrete structures Definitions, requirements, quality control and evaluation of conformity Part 1: General scope a
42、nd definitions. 3 prEN 15044, Products and systems for the protection and repair of concrete structures Definitions, requirements, quality control and evaluation of conformity Part 4: Structural bonding.BS EN 12189:1999 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | |
43、 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the independent national body responsible fo
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