BS EN 12617-4-2002 Products and systems for the protection and repair of concrete structures - Test methods - Determination of shrinkage and expansion《混凝土结构的防护和修整用产品和系统 试验方法 收缩率和膨胀.pdf

1、BRITISH STANDARD BS EN 12617-4:2002 Products and systems for the protection and repair of concrete structures Test methods Part 4: Determination of shrinkage and expansion The European Standard EN 12617-4:2002 has the status of a British Standard ICS 91.080.40 NO COPYING WITHOUT BSI PERMISSION EXCEP

2、T AS PERMITTED BY COPYRIGHT LAWBS EN 12617-4:2002 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 BSI 12 July 2

3、002 ISBN 0 580 40086 7 National foreword This British Standard is the official English language version of EN 12617-4:2002. The UK participation in its preparation was entrusted by Technical Committee B/517, Concrete, to Subcommittee B/517/8, Protection and repair of concrete structures, which has t

4、he responsibility to: 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 Catalogue under the section e

5、ntitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for their correct application. Comp

6、liance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers 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 relate

7、d international and European developments and promulgate them in the UK. 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 docume

8、nt was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN 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 of shrink

9、age 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 und Quelle

10、ns 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 status of a national standard without any alteration. Up-to-date lists and bibliographical r

11、eferences 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 member

12、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, Norway, Por

13、tugal, 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 2002 CEN All rights of exploitation in any form and by any means reserved worldwide for CE

14、N national Members. Ref. No. EN 12617-4:2002 EEN 12617-4:2002 (E) 2 Contents page Foreword3 1 Scope 4 2 Normative references 4 3 Terms and definitions and symbols 4 3.1 Terms and definitions4 3.2 Symbols 4 4 Principle5 5 Apparatus .5 5.1 Unrestrained movement mould5 5.2 Measurement studs .5 5.3 Meas

15、uring apparatus.5 5.4 Calibration rod .5 5.5 Tampers 6 5.6 Concrete slab test panels .6 5.7 Standard laboratory climate .6 5.8 Mortar mixer .6 5.9 Compaction tools and equipment6 5.10 Water baths 6 5.11 Triangular support grid .6 6 Procedure for unrestrained movement .6 6.1 General6 6.2 Preparation

16、of specimens.6 6.3 Initial measurement .7 6.4 Storage conditions 8 6.5 Subsequent readings 8 6.6 Calculation9 6.7 Recommended additional test9 7 Procedure for restrained movement9 7.1 General9 7.2 Preparation of specimens.9 7.3 Storage Conditions10 7.4 Inspection and testing.10 8 Test report 10 Anne

17、x A (normative) Summary of temperatures and humidities for the curing, conditioning and testing of repair products and systems 13 Bibliography 14EN 12617-4:2002 (E) 3 Foreword This document EN 12617-4:2002 has been prepared by Technical Committee CEN/TC 104 “Concrete and related products“, the secre

18、tariat 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 at the latest by December 2002. It was prepared

19、 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 dealing with products and systems for the protection and repair of concrete structures. This European Standard describ

20、es two methods for determining the dimensional stability of repair products 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 expan

21、sion. It is one of a series of inter-related parts dealing with dimensional stability of repair products 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, P

22、roducts and systems for the protection and repair of concrete structures - Test methods Part 2: Determination of volumetric shrinkage. EN 12617-3, Products and systems for the protection and repair of concrete structures - Test methods - Part 3: Determination of early age linear shrinkage for struct

23、ural bonding agents. Annex A is normative. 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,

24、Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.EN 12617-4:2002 (E) 4 1 Scope This European Standard specifies a method for measuring the dimensional stability (i.e. the shrinkage and expansion movement) due to changes in the moisture conten

25、t of hydraulic mortars or concretes (CC) or polymer hydraulic cement mortars 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 c

26、oncrete products or systems with a maximum aggregate size of 10 mm. 2 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 liste

27、d 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 latest edition of the publication referred to applies (including amendments). EN 196

28、-1:1994, Methods of testing cement - Part 1: Determination of strength. EN 1015-2, Methods of test for mortar for masonry Part 2: Bulk sampling of mortars and preparation of test mortars. EN 1504-1, Products and systems for the protection and repair of concrete structures Definitions, requirements,

29、quality control and evaluation of conformity- Part 1: Definitions. EN 1542, Products and systems for the protection and repair of concrete structures - Test methods - Measurement of bond strength by pull-off. EN 1766, Products and systems for the protection and repair of concrete structures - Test M

30、ethods - Reference concretes for testing. prEN 1504-3 1 , Products and systems for the protection and repair of concrete structures - Part 3: Structural and non-structural repair. ISO 554, Standard atmospheres for conditioning and/or testing Specifications. 3 Terms and definitions and symbols 3.1 Te

31、rms and definitions For the purposes of this European Standard, the terms and definitions given in EN 1504-1 apply. 3.2 Symbols The following list of symbols is used in this standard. c is the specific length variation, in % ; m is the specific mass change, in % ; L is the initial length of test spe

32、cimen at time of release from mould, in mm ;1Under preparation.EN 12617-4:2002 (E) 5 L g is the gauge length (L g= L only for type 2 studs), in mm ; L 0 is the initial reading in the measuring apparatus, taken after 24 h, in mm ; L is the length variation in relation to the initial length, in mm ; M

33、 o is the initial mass of the test specimen at time of release from the mould, in g ; M 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

34、measuring the unrestrained linear movement arising from immersion in water (expansion) or drying conditions (shrinkage) of prismatic specimens 40 mm 40 mm 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 applie

35、d to a 300 mm 300 mm 100 mm reference concrete substrate and subjected 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 compart

36、ments, allowing simultaneous preparation of test specimens. Each compartment 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

37、 the mortar. Typical designs for Type 1 recessed stud and Type 2 projecting stud are shown in Figures 1 and 2 respectively. NOTE The design of the studs and the embedment method need to be compatible with the measuring apparatus used (see 5.3). 5.3 Measuring apparatus Apparatus used to measure the l

38、ength of the test specimens. It shall be adjustable to give sufficient length to measure the minimum specimen length 5 mm and have an accuracy of measurement of 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 othe

39、r material that has a similar coefficient of expansion over the range of test temperatures. The calibration rod shall be (160 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

40、 on the first rod and the seatings of the measuring apparatus (see 5.3), by comparing their apparent lengths at three-monthly intervals.EN 12617-4:2002 (E) 6 5.5 Tampers Tampers consisting of sound, non-absorbent rods, of (38 1) mm and (15 1) mm in diameter and (200 10) mm in length. The tamping fac

41、e of each rod shall be flat and at right angles to the length of the tamper, the mass of the larger tamper shall be (250 15) g and the smaller tamper (40 5) g. 5.6 Concrete slab test panels Concrete panels prepared in accordance with the method of EN 1542 with dimensions 300 mm 300 mm 100 mm, made u

42、sing reference concrete to EN 1766 and of a type as specified in prEN 1504- 3 2 . 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

43、equipment for compacting repair grouts, mortars and concretes according to EN 196-1 or EN 1015-2. 5.10 Water baths Baths containing potable water for complete immersing the test specimens at a temperature of (21 2) C, as defined in annex A. 5.11 Triangular support grid A grid onto which the specimen

44、s are supported in the standard laboratory climate 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 meas

45、uring the average shrinkage and three specimens 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 ma

46、nufacturer, use the following mixing technique 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.2Under preparation.EN 12617-4:2002 (

47、E) 7 Where the manufacturers instructions preclude 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 It has been found that certain types of repair mortar can foam excessively under the action of the mortar mixer s

48、pecified in EN 196-1. An alternative is to use a forced action pan mixer (see 5.8). NOTE 2 The air content (see EN 1015-7, pressure method) and the compressive strength and density (see EN 12190) of the CC and PCC mixes should normally be determined to characterise the mortar under test. If type 1 m

49、easuring studs are to be used, these shall be 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 To hold the measuring studs s