1、BRITISH STANDARD Products and systems for the protection and repair of concrete structures Test methods Part 4: Determination of shrinkage and expansion The European Standard EN 126174:2002 has the status ofa British Standard ICs 91.080.40 BS EN 1 26 1 7-41 2002 NO COPYING WITHOUT BSI PERMISSION EXC
2、EPT AS PERMITTED BY COPYRIGHT LAW BS EN 12617-412002 National foreword This British Standard is the official English language version of EN 126174:2002. The UKparticipation in its preparation was entrusted by Technical Committee B/5 17, Concrete, to Subcommittee B/517/8, Protection and repair of con
3、crete structures, which has the responsibility to: This British Standard, having been prepared under the direction of the Building and Civil Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 12 July 2002 - - aid enqu
4、irers to understand the text; present to the responsible 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. - A list of organizations
5、 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 Catalogue under the section entitled “International Standards Corresponden
6、ce Index”, or by using the “Search”faci1ity ofthe BSI Electronic Catalogue or ofBritish Stan dards Online. 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 ofitsel
7、f 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 14, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments
8、issued since publication Amd.No. I Date I Comments OBSI 12 July 2002 ISBN O 580 40086 7 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12617-4 May 2002 ICs 91.080.40 English version Products and systems for the protection and repair of concrete structures - Test methods - Part 4: Determination
9、 of shrinkage and expansion Produits et systmes de protection et de rparation des structures en bton - Mthodes dessai - Partie 4: Dtermination du retrait et du gonflement Produkte und Systeme fr den Schutz und die Instandsetzung von Betontragwerken - Prfverfahren - Teil 4: Bestimmung des Schwindens
10、und Quellens This European Standard was approved by CEN on 4 January 2002 CEN members are bound to comply with the CENLENELEC 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 bibliogra
11、phical 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 version in any other language made by translation under the responsibility of a CEN
12、 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, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Nor
13、way, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMIT EUROPEN DE NORMALISATION Management Centre: rue de Stassart, 36 B-I 050 Brussels O 2002 CEN All rights of exploitation in any form and by any means reserved world
14、wide for CEN national Members. Ref. No. EN 12617-4:2002 E EN 12617-4:2002 (E) Contents Page Foreword 3 1 2 3 3.1 3.2 4 5 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.1 1 6 6.1 6.2 6.3 6.4 6.5 6.6 6.7 7 7.1 7.2 7.3 7.4 8 .4 Scope . Normative references Terms and definitions and symbols Terms and defini
15、tions . Principle . . 5 . 5 Apparatus . . . 5 Unrestrained movement mould . . 5 Measurement st u ds . . 5 Measuring apparatus . . . 5 Calibration rod . . . 6 Concrete slab t . 6 . 6 . . 6 Compaction tools and equipment . 6 Water baths . 6 . 6 . 6 . 6 . 6 . 7 . 8 . 8 . 9 . 9 . 9 . 9 . 9 . 10 . 10 . G
16、eneral . Preparation of specimens. . Initial measurement . . Storage conditions . Procedure for restrained movement General. . . Preparation of specimens. . Storage Conditions . Inspection and testing . . Test report Annex A (normative) Summary of temperatures and humidities for the curing, conditio
17、ning and 13 testing of repair products and systems Bibliography . 14 2 EN 12617-4:2002 (E) Foreword This document EN 1261 7-4:2002 has been prepared by Technical Committee CEN/TC 104 “Concrete and related products“, the secretariat of which is held by DIN. This European Standard shall be given the s
18、tatus 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 at the latest by December 2002. It was prepared by sub-committee 8 “Products and systems for the protection and repair of
19、concrete structures“, the secretariat of which is held by AFNOR. This European Standard is one of a series dealing with products and systems for the protection and repair of concrete structures. This European Standard describes two methods for determining the dimensional stability of repair products
20、 and systems subject to conditions of drying and immersion. The first method measures the unrestrained shrinkage and expansion, while the second method measures the effects of restraint on the unrestrained shrinkage and expansion. It is one of a series of inter-related parts dealing with dimensional
21、 stability of repair products and systems. The other parts are: prEN 1261 7-1, Producfs and sysfems for fhe profecfion and repair of concrefe sfrucfures - Tesf mefhods - Par 1: Deferminafion of linear shrinkage. prEN 1261 7-2, Producfs and sysfems for fhe profecfion and repair of concrefe sfrucfures
22、 - Tesf mefhods - Par 2: Defermina fion of volumefric shrinkage. EN 1261 7-3, Producfs and sysfems for fhe profecfion and repair of concrefe sfrucfures - Tesf mefhods - Par 3: Deferminafion of early age linear shrinkage for sfrucfural bonding agenfs. Annex A is normative. According to the CENKENELEC
23、 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, Malta, Netherlands, Norway, Portugal, Spain, Sweden,
24、 Switzerland and the United Kingdom. 3 EN 12617-4:2002 (E) 1 Scope This European Standard specifies a method for measuring the dimensional stability (.e. the shrinkage and expansion movement) due to changes in the moisture content of hydraulic mortars or concretes (CC) or polymer hydraulic cement mo
25、rtars or concretes (PCC) as defined in EN 1504-1. Two methods are proposed, namely a procedure for unrestrained movement and a procedure for restrained movement. The provisions of the standard are applicable to grout, mortar or concrete products or systems with a maximum aggregate size of 1 O mm. 2
26、Normative references This European Standard incorporates by dated or undated reference, provisions 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 revisio
27、ns of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 196-1 : 1994, Mefhods of fesfing cemenf - Par 1: Deferminafion of sfrengf
28、h. EN 1015-2, Mefhods of fesf for mortar for masonry - Par 2: Bulk sampling of mortars and preparafion of fesf mortars. EN 1504-1 , Producfs and sysfems for fhe profecfion and repair of concrefe sfrucfures - Definifions, requiremenfs, qualify con fro1 and evaluafion of conformify- Par 1: Definifions
29、. EN 1542, Producfs and sysfems for fhe profecfion and repair of concrefe sfrucfures - Tesf mefhods - Measuremenf of bond sfrengfh by pull-off. EN 1766, Producfs and sysfems for fhe profecfion and repair of concrefe sfrucfures - Tesf Mefhods - Reference concrefes for fesfing. prEN 1504-3l, Producfs
30、and sysfems for fhe profecfion and repair of concrefe sfrucfures - Par 3: Sfrucfural and non-sfrucfural repair. IS0 554, Sfandard afmospheres for condifioning andlor fesfing - Specificafions. 3 Terms and definitions and symbols 3.1 Terms and definitions For the purposes of this European Standard, th
31、e terms and definitions given in EN 1504-1 apply. 3.2 Symbols The following list of symbols is used in this standard. C m L is the specific length variation, in % is the specific mass change, in % ; is the initial length of test specimen at time of release from mould, in mm ; Under preparation. 4 EN
32、 12617-4:2002 (E) LO AL is the gauge length (Lg = L only for type 2 studs), in mm ; is the initial reading in the measuring apparatus, taken after 24 h, in mm ; is the length variation in relation to the initial length, in mm ; is the initial mass of the test specimen at time of release from the mou
33、ld, in g ; is the mass variation in relation to the initial mass, in g. 4 Principle The shrinkage or expansion determination comprises two methods of test for CC and PCC repair products and systems. The first method is for measuring the unrestrained linear movement arising from immersion in water (e
34、xpansion) or drying conditions (shrinkage) of prismatic specimens 40 mm x 40 mm x 160 mm in size from 24 h to 56 days after casting. The second method is for measuring the loss of adhesion and the tendency to crack, when applied to a 300 mm x 300 mm x 100 mm reference concrete substrate and subjecte
35、d to immersion in water (expansion) or drying conditions (shrinkage). 5 Apparatus 5.1 Unrestrained movement mould Moulds, complying with the requirements of 4.5 of EN 196-1:1994 except that there shall be a minimum of three compartments, allowing simultaneous preparation of test specimens. Each comp
36、artment shall be provided a hole at the centre of each end face to hold a measurement stud that is to be embedded in the specimen. 5.2 Measurement studs Studs made of stainless steel, or other hard material that does not react with the mortar. Typical designs for Type 1 recessed stud and Type 2 proj
37、ecting stud are shown in Figures 1 and 2 respectively. NOTE (see 5.3). The design of the studs and the embedment method need to be compatible with the measuring apparatus used 5.3 Measuring apparatus Apparatus used to measure the length of the test specimens. It shall be adjustable to give sufficien
38、t length to measure the minimum specimen length f 5 mm and have an accuracy of measurement of f 0,001 mm. It shall have suitable fittings to receive the measurement studs (see 5.2). 5.4 Calibration rod A rod made of invar metal or other material that has a similar coefficient of expansion over the r
39、ange of test temperatures. The calibration rod shall be (160 f 1) mm in length and with ends of the same shape as the measurement studs (see 5.2). NOTE It is recommended that a second identical rod be available to serve as check for wear on the first rod and the seatings of the measuring apparatus (
40、see 5.3), by comparing their apparent lengths at three-monthly intervals. 5 EN 12617-4:2002 (E) 5.5 Tampers Tampers consisting of sound, non-absorbent rods, of (38 f 1) mm and (15 f 1) mm in diameter and (200 f IO) mm in length. The tamping face of each rod shall be flat and at right angles to the l
41、ength of the tamper, the mass of the larger tamper shall be (250 f 15) g and the smaller tamper (40 f 5) g. 5.6 Concrete slab test panels Concrete panels prepared in accordance with the method of EN 1542 with dimensions 300 mm x 300 mm x 100 mm, made using reference concrete to EN 1766 and of a type
42、 as specified in prEN 1504- 32. 5.7 Standard laboratory climate Storage room in accordance with the requirements of annex A. 5.8 Mortar mixer Mixer in accordance with EN 196-1, or forced action pan mixer. 5.9 Compaction tools and equipment Tools and equipment for compacting repair grouts, mortars an
43、d concretes according to EN 196-1 or EN 1015-2. 5.1 O Water baths Baths containing potable water for complete immersing the test specimens at a temperature of (21 f 2) OC, as defined in annex A. 5.1 1 Triangular support grid A grid onto which the specimens are supported in the standard laboratory cl
44、imate or water bath, to achieve a minimum 5 mm clearance. 6 Procedure for unrestrained movement 6.1 General Unless specified to the contrary, not less than six prism specimens shall be prepared and tested, from which three specimens shall be used for measuring the average shrinkage and three specime
45、ns shall be used for measuring the average swelling. 6.2 Preparation of specimens All materials shall be conditioned in the standard laboratory climate (see annex A) for a period of not less than 24 h prior to mixing. Unless otherwise instructed by the manufacturer, use the following mixing techniqu
46、e for preparing the specimens. For PCC and CC mortar, use the mortar mixer (see 5.8) set to a low speed, pouring the gauging liquid into the bowl and adding the dry ingredients, mixing for a total period of two minutes. Under preparation. 6 EN 12617-4:2002 (E) Where the manufacturers instructions pr
47、eclude use of part bags of material, a forced action pan mixer (see 5.8) or other method recommended by the manufacturer shall be used. NOTE 1 specified in EN 196-1. An alternative is to use a forced action pan mixer (see 5.8). It has been found that certain types of repair mortar can foam excessive
48、ly under the action of the mortar mixer NOTE 2 CC and PCC mixes should normally be determined to characterise the mortar under test. The air content (see EN 1015-7, pressure method) and the compressive strength and density (see EN 12190) of the If type 1 measuring studs are to be used, these shall b
49、e attached to the mould using a bolt that passes through the hole in the centre of each end face and locates on the threaded stud, ensuring the stud is positioned centrally. If type 2 measuring studs are to be used, these shall be inserted into the holes in the end faces of the moulds so that they are up against the conical part of the hole, in so doing, care shall be taken that the studs are not displaced during specimen preparation. NOTE 3 studs are pressed, carefully removing any moulding compound expelled. To hold the measuring studs securely, the holes of the mo
