1、BRITISH STANDARDBS EN 14498:2004Products and systems for the protection and repair of concrete structures Test methods Volume and weight changes of injection products after air drying and water storage cyclesThe European Standard EN 14498:2004 has the status of a British StandardICS 91.080.40g49g50g
2、3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 14498:2004This British Standard was published under the authority of the Standards Policy and Strateg
3、y Committee on 30 November 2006 BSI 2006ISBN 0 580 49638 4National forewordThis British Standard was published by BSI. It is the UK implementation of EN 14498:2004.The UK participation in its preparation was entrusted by Technical Committee B/517, Concrete, to Subcommittee B/517/8, Protection and re
4、pair of concrete structures.A list of organizations represented on B/517/8 can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot
5、confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14498September 2004ICS 91.080.40English versionProducts and systems for the protection and repair of concretestructures - Test methods - Volume and weight
6、 changes ofinjection products after air drying and water storage cyclesProduits et systmes de protection et de rparation desstructures en bton - Mthodes dessai - Variations devolume et de poids lissue de cycles de schage lair etde conditionnement dans leauProdukte und Systeme fr den Schutz und dieIn
7、standsetzung von Betontragwerken - Prfverfahren -nderungen von Volumen und Gewicht nach Wechsel-Beanspruchung durch Trocknung an der Luft und Lagerungin WasserThis European Standard was approved by CEN on 16 April 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which s
8、tipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard e
9、xists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bod
10、ies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR S
11、TANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14498:2004: EEN 14498:2004 (E) 2 Contents page 1 Sc
12、ope 4 2 Normative references 4 3 Terms and definitions .4 4 Test principle4 5 Apparatus .4 6 Sampling and preparation 5 7 Procedure .5 8 Expression of results 7 9 Test report 7 EN 14498:2004 (E) 3 Foreword This document (EN 14498:2004) has been prepared by Technical Committee CEN/TC 104 “Concrete an
13、d related products”, the secretariat of which is held by DIN. It has been drafted by Sub-Committee 8 “Products and systems for the protection and repair of concrete structures“ (Secretariat AFNOR). This European Standard shall be given the status of a national standard, either by publication of an i
14、dentical text or by endorsement, at the latest by March 2005, and conflicting national standards shall be withdrawn at the latest by March 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Sta
15、ndard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 14498:2004 (E) 4 1
16、 Scope This document describes a test method to determine the volume and weight changes of injection products used for swelling fitted filling of cracks, voids and interstices after air drying and water storage cycles. 2 Normative references The following referenced documents are indispensable for t
17、he application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 196-1:1994, Methods of testing cement Part 1: Determination of strength. EN 1504-1:1998, Products and sy
18、stems for the protection and repair of concrete structures - Definitions, requirements, quality control and evaluation of conformity - Part 1: Definitions. prEN 1504-5:2001, Products and systems for the protection and repair of concrete structures - Definitions, requirements, quality control and eva
19、luation of conformity - Part 5: Concrete injection. 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1504-1:1998 and prEN 1504-5:2001 apply. 4 Test principle The volume and weight changes which occur during air drying and water storage, from 24 h after
20、 casting and onwards, are measured on prismatic specimens having dimensions of 5 mm x 40 mm x 160 mm. 5 Apparatus 5.1 Moulds complying with the requirements of 4.5 of EN 196-1:1994. 5.2 Apparatus for measuring the dimensions of the test specimens to an accuracy of 0,1 mm. 5.3 Balance capable of weig
21、hing 500 g to an accuracy of 0,01 g. 5.4 Water bath containing potable water for completely immersing the test specimens at a temperature of (21 2) C. The volume of the water bath is chosen to comply with requirements in 7.3.4. 5.5 Storage room for conditioning the test specimens, at a temperature o
22、f (21 2) C and a relative humidity of (60 10) %. 5.6 Support grid for supporting the specimens with a minimum of 5 mm clearance in a water bath or in air. 5.7 Air oven capable of maintaining the specified temperature to 2 C. The oven shall be fitted with forced-ventilation equipment. EN 14498:2004 (
23、E) 5 6 Sampling and preparation 6.1 General Unless specified to the contrary, not less than six prism specimens shall be prepared and tested. Three specimens shall be used for measuring the volume and weight changes occurring under the conditions described in 7.3.2, and three specimens for measuring
24、 the volume and weight changes occurring under the conditions described in 7.3.3. 6.2 Preparation of specimens The injection product shall be prepared and mixed in accordance with the manufacturers instructions. Immediately after mixing, it shall be poured into the moulds and the moulds covered with
25、 plastic film. The moulds shall be cured in the standard laboratory climate for 24 h. The thickness shall normally be (5 1) mm. Should handling difficulties occur with specimens of this thickness, the thickness may be increased to (10 1) mm or (15 1) mm. 7 Procedure 7.1 Measurements of volume and we
26、ight 7.1.1 General Standard conditions of measurements shall be (21 2) C and (60 10) % relative humidity. 7.1.2 Measurements of weights in air The duration of measurement shall be as short as possible. In case of conditioning in water, the specimens shall be dabbed with a moist cloth to remove exces
27、s water. 7.1.3 Measurement of volume The volume is measured as follows: by weighing the specimen in air: Ws; by measuring the apparent weight in water at (21 2) C of the specimen and the suspension wire: W(s + w)i; by measuring the apparent weight in water at (21 2) C of the suspension wire immersed
28、 at the same length : W(w)i. The volume in cm3is given by: 998,01w)i(s(w)is += WWWV where 0,998 is the specific gravity of water at (21 2) C, in 3cmg . EN 14498:2004 (E) 6 NOTE The measurement of the apparent weight of specimens conditioned in air should be made after (120 5) s immersion. After the
29、weighing, the specimens should be immediately surface dried by removing surface moisture with a moist towel. 7.2 Initial measurement The specimens shall be carefully removed from the moulds (24 1) h after mixing. The volume and weight of each of the specimens shall be measured. 7.3 Conditioning 7.3.
30、1 General After the initial measurement at (24 1) h, 3 specimens shall be submitted to conditioning regime A (7.3.2), and 3 specimens to conditioning regime B (7.3.3). 7.3.2 Conditioning regime A The specimens shall be stored for 14 days fully immersed in potable water at a temperature of (21 2) C.
31、The volume and weight shall be measured at the following times: 1 h, 2 h, 4 h, 6 h, 24 h, 48 h, 72 h, 96 h, 168 h, 264 h, 312 h and 336 h. If the volume and weight of the specimens are not constant after 336 h (14 days), the immersion period shall be prolonged until a constant weight is reached. Con
32、stant weight is reached for this test when the weight variation during 3 consecutive measures at 24 h interval is less than 1 %. At the end of the immersion period, the volume and weight shall be measured. 7.3.3 Conditioning regime B The specimens shall be subject to 10 wetting and drying cycles, as
33、 follows: 1 day drying in the oven at (50 2) C; 6 days storage fully immersed in potable water at a temperature of (21 2) C. The volume and weight shall be measured at the end of every cycle after the 6 days immersion. After the wetting and drying cycles the specimens shall be immersed in potable wa
34、ter at a temperature of (21 2) C until constant weight is reached, as defined in 7.3.2. At the end of the immersion period, the volume and weight shall be measured. 7.3.4 Storage conditions During immersion, the specimens shall be stored on the grid, so as not to restrict volume changes of the speci
35、mens under the test conditions. During air and water storage, a spacing of at least 100 mm shall be maintained between specimens to ensure uniform moisture or water exchange around the specimens. In addition, during water storage, the spacing between the specimens and the upper water level and betwe
36、en the specimens and the sides of the water bath shall be at least 100 mm. EN 14498:2004 (E) 7 8 Expression of results The change in volume, expressed in %, rounded to the first decimal, is determined at each time, according to the following equation: 100=iittVVVV where Viis the initial volume ; Vti
37、s the volume at time t. The change in weight, expressed in %, rounded to the first decimal, is determined at each time, according to the following equation: 100=iittWWWW where Wiis the initial weight; Wtis the final weight at time t. Upon completion of the conditioning, the test specimens shall be i
38、nspected visually for evidence of cracking or other phenomena. 9 Test report The test report shall contain the following information: a) a reference to this document; b) name and address of the test laboratory; c) identification number of the test report; d) name and address of the manufacturer or s
39、upplier of the product; e) name and identification marks or batch number of the product; f) date of supply of the product; g) date of preparation of the test specimens and any deviation from the prescribed method of preparation; procedure of preparation of the test specimens (ratios of the several c
40、omponents, mixing equipment, ) and thickness of the specimens; h) conditions of storage of prepared specimens prior to test; i) date of test and details of the test equipment used, including the make, type and capacity and the calibration details or the identification number of the apparatus; EN 144
41、98:2004 (E) 8 j) the tests results: visual changes, individual and average values of changes in weight and volume at each time interval, changes in weight and volume presented in diagrams; k) accuracy data; l) date of test report and signature. blankBS EN 14498:2004BSI389 Chiswick High RoadLondonW4
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