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1、BRITISH STANDARD BS EN 12617-3:2002 Products and systems for the protection and repair of concrete structures Test methods Part 3: Determination of early age linear shrinkage for structural bonding agents The European Standard EN 12617-3:2002 has the status of a British Standard ICS 91.080.40; 91.10
2、0.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:07:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 12617-3:2002 This British Standard, having been prepared under the direction of the Building and Civil Engineer
3、ing Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 12 July 2002 BSI 12 July 2002 ISBN 0 580 40085 9 National foreword This British Standard is the official English language version of EN 12617-3:2002. The UK participation in
4、its preparation was entrusted by Technical Committee B/517, Concrete, to Subcommittee B/517/8, Protection and repair of concrete structures, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The Bri
5、tish Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards On
6、line. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the respo
7、nsible international/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. Summary of pages This document comprises a front cover, an inside front cov
8、er, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:07:11 GMT+00:
9、00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12617-3 May 2002 ICS 91.080.40; 91.100.10 English version Products and systems for the protection and repair of concrete structures - Test methods - Part 3: Determination of early age linear shrinkage for struct
10、ural bonding agents Produits et systmes pour la protection et la rparation des structures en bton - Mthodes dessai - Partie 3: Dtermination du retrait linaire au jeune ge pour les produits de collage structural Produkte und Systeme fr den Schutz und die Instandsetzung von Betontragwerken - Prfverfah
11、ren - Teil 3: Bestimmung des zeitlichen Verlaufs des linearen Schrumpfens von Klebstoffen This European Standard was approved by CEN on 4 January 2002. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the statu
12、s 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. This European Standard exists in three official versions (English, French, German). A vers
13、ion 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 Austria, Belgium, Czech Republic, Denmark, Finland, France
14、, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 200
15、2 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12617-3:2002 E Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:07:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12617-3:2002 (E) 2 Contents page Foreword3 1Scope 4 2Norm
16、ative references4 3Principle4 4Equipment 4 5Method5 6Calculation of shrinkage.6 7Test report6 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:07:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12617-3:2002 (E) 3 Foreword This document EN 12617-3 been prepared by Technical Committee CEN/TC
17、 104 “Concrete and related products“, 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 2002, and conflicting national standards shall be withdrawn
18、at the latest by December 2002. It was prepared by sub-committee 8 “Products and systems for the protection and repair of concrete structures“, the secretariat of which is held by AFNOR. This European Standard is one of a series of inter-related parts dealing with dimensional stability repair produc
19、ts and systems. The other parts are: prEN 12617-1, Products and systems for the protection and repair of concrete structures - Test methods Part 1: Determination of linear shrinkage. prEN 12617-2, Products and systems for the protection and repair of concrete structures - Test methods Part 2: Determ
20、ination of volumetric shrinkage. EN 12617-4, Products and systems for the protection and repair of concrete structures - Test methods Part 4: Determination of shrinkage and expansion. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries a
21、re bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct
22、 28 09:07:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12617-3:2002 (E) 4 1 Scope This European Standard specifies a method for the determination of the early age linear shrinkage of structural bonding agents covered by EN 1504-1 and prEN 1504-4. It describes the procedures for the measurement o
23、f linear shrinkage from initial gel of polymer, in the form of unrestrained thin strips less than 10 mm in thickness. It is intended for measurement of early age shrinkage, for example up to 24 hours. 2 Normative references This European Standard incorporates by dated or undated reference, provision
24、s from other publications. These normative references 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 a
25、mendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 1504-1, Products and systems for the protection and repair of concrete structures Definitions, requirements, quality control and evaluation of conformity - Part 1: Defini
26、tions. prEN 1504-4, Products and systems for the protection and repair of concrete structures Definitions, requirements, quality control and evaluation of conformity Part 4: Structural bonding. 3 Principle In principle the test is as follows : A freshly mixed sample of polymer shall be placed into a
27、 shallow steel trough shaped mould, the inside of which has been treated to prevent adhesion to the polymer. The mould has sliding ends which bond to the polymer and are free to move as the polymer expands or contracts. Linear displacement transducers attached to the ends enable the shrinkage to be
28、measured. Temperature sensors attached to the mould enable the temperature of the mould and the polymer to be measured. 4 Equipment 4.1 Mould A mould comprising a 400 mm long pressed steel trough supported on an insulating base and fitted with sliding stop ends, as shown in Figure 1. The sliding end
29、s shall fit the cross section of the trough with a clearance of 0,1 mm. The inside of the trough is coated with polytetrafluoroethylene (PTFE). Disposable linings which have surfaces prepared to enable the polymer samples to adhere to them are attached to the inner faces of the sliding ends. (A mech
30、anical linkage may be needed for some polymers). Probes of linear displacement transducers are attached to the outer faces of the sliding ends. A thermocouple is attached at the centre of the underside of the mould which enables any exothermic temperature rise that occurs during the hardening (curin
31、g) of the polymer to be measured. 4.2 Linear displacement transducers Linear transducers which are capable of measuring to an accuracy of ? 0,01 mm over a range of 5 mm and of producing an output which can be recorded on an automatic recorder. 4.3 Thermocouples Thermocouples connected into a signal
32、conditioning unit with automatic cold junction compensation, which gives a linear output proportional to temperature so that the temperature of the polymer can be measured at any time during the hardening period. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:07:11 GMT+00:00 2006, Uncontr
33、olled Copy, (c) BSI EN 12617-3:2002 (E) 5 4.4 Automatic recorder(s) An automatic recorder or recorders capable of recording the movements measured by the linear transducers according to 5.2 over a period of 24 hours and the temperature changes during hardening according to 5.3. 4.5 Environmental cab
34、inet An environmental cabinet large enough to contain the mould as described in 5.1 in a horizontal position and capable of maintaining temperature (21 ? 2) C and relative humidity (60 ? 10) %. 5 Method 5.1 Sampling material The polymer to be tested shall be taken from one production batch of mortar
35、. Each specimen shall be representative of the polymer being assessed. 5.2 Number of test specimens A minimum of three specimens shall be tested. 5.3 Conditioning of test materials All materials shall be conditioned in the test cabinet as described in 5.5 for 24 hours to reach the required temperatu
36、re. The surfaces of the mould which come into contact with the polymer shall be carefully treated with a thin film of suitable silicone release agent and then conditioned in the environmental cabinet as described in 5.5 for 24 hours to reach the test temperature. The temperature shall be measured by
37、 the thermocouple as described in 5.3. The transducers as described in 5.2 shall be set at mid-stroke and the sliding ends clamped in this position whilst the filling of the mould with the polymer takes place. A small fillet of silicone is applied at the junction of the sliding end and the trough to
38、 prevent any leakage of the polymer. 5.4 Preparation of specimens The proportioning and mixing of the polymer shall be carried out in accordance with the manufacturers instructions. The mixed material shall be carefully placed in the mould and compacted to form a uniform level layer maximum 10 mm de
39、ep. 5.5 Measurement of shrinkage and expansion As soon as the specimen preparation is complete the sliding ends are unclamped and initial readings on the transducers and the thermocouples are taken. Record the readings for the sliding end displacement and mould temperature at 5 minutes intervals unt
40、il 1 hour after the initial gelation of the polymer has taken place (gelation can normally be detected by monitoring the inward movement of the ends). Record further readings at 15 minutes intervals during the next 23 hours and at hourly intervals for the subsequent 24 hours. On completion of the te
41、st measure and record the length of the hardened test specimen Ls and the length of the mould between the centre lines of the transducer bases Lm to the nearest 0,1 mm. Owing to the exothermic nature of the hardening of polymers the temperature of the test specimen and trough will rise to a maximum
42、and the trough will expand thus exaggerating the degree of shrinkage at this stage. Corrections can be made for this expansion but are not usually required as the trough returns to ambient temperature by the time maximum shrinkage has occurred. However, corrections need to be made if a continuous re
43、adout of shrinkage is required. Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:07:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12617-3:2002 (E) 6 6 Calculation of shrinkage Calculate the change in length of each specimen, s L?, from the equation. 321s ?L?(1) where 1 ? and 2 ? are the
44、two transducer readings at either end of the specimen (in mm) (positive towards the centre of the specimen); 3 ? is the thermal expansion of the mould given by: sm3 ?TL ?(2) where m L is the length of the mould between transducer fixings (in mm); T?is the change in temperature of the mould from ambi
45、ent to the prescribed temperature (in K) (values less than 5 K can be ignored); s ?is the coefficient of thermal expansion of steel ? 16 1011 ? ?K. Then calculate the shrinkage strain, Sm, as a percentage, from the equation: 100 s s m ? L L S ? (3) where Lsis the effective length of the hardened spe
46、cimen at the ambient temperature (in mm). NOTEThe method does not distinguish precisely between movements due to thermal expansion of the material and shrinkage of the material at any particular moment of time. 7 Test report The following information shall be included in the test report: a) referenc
47、e to this European Standard; b) name and address of the test laboratory; c) identification number and date of the test report; d) name and address of the manufacturer or supplier of the product; e) name and identification marks or batch number of the product; f) date of supply of the product; g) dat
48、e of preparation of the test specimens and any deviation from the prescribed method of preparation; Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 09:07:11 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12617-3:2002 (E) 7 h) conditions of storage of prepared specimens prior to test; i) date o
49、f test and details of the test equipment used, including the make, type and capacity and the calibrations details or the identification number of the apparatus; j) tabulation of the results of shrinkage against time, specifying whether or not temperature correction has been applied, and natural scale graphs of these results; k) the time intervals from mixing the constituents to identification of initial gel; l) the calculated maximum value of shrinkage strain and the time to reach the value from completion of mixing the constit