1、STDaBSI BS EN L7b7-ENGL 1999 E lb24bb9 07924b1 805 E BRITISH STANDARD Products and systems for the protection and repair of concrete structures - Test methods - Infrared analysis The European Standard EN 1767:1999 has the status of a British Standard ICs 91.010.30; 91.080.40 BS EN 1767:1999 NO COPYI
2、NG WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 1767:1999 been prepared under the Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 September 1999 direction of the Sector Amd.No. O BSI 09-1999 I
3、SBN O 580 32669 1 National foreword Date Comments ThLs British Standard is the English language version of EN 1767:1999. The UK pasticipationh its preparation was entrusted by Technical Committee B/517, Concrete, to Subcommittee B/517/8, Repair and protection of concrete, which has the responsibilit
4、y to: - aid enquirers to understand the te, - 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 organizatio
5、ns represented on this subcommittee can be obtained on request to its secretaxy. 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
6、Correspondence Index”, or by using the “Find” facility of the BSI StanD EN 1767 NORMEC E;LTROPEE”E EuRopAIscHE NORM June 1999 ICs 91.080.40 English version products and systems for the protection and repair of concrete stnictures - Tbst methods - InFared analysis Produits et systmes pour la protecti
7、on et la rparation des structures en bton- Mthodes dessais - Analyse par spectromtrie hrarouge Pruukte und Systeme fur den Schutz und die Instandsetzung von Betontragwerken - pi-ufverfahrn- Infiarotanalyse This European Standard was approved by CEN on 2 May 1999. CEN members are bound to comply with
8、 the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Uptodate lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat o
9、r 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 responsibfity of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versi
10、ons. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. European Committee for Standardization Comit Europen d
11、e Normalisation Europisches Komitee fur Normung Central Secretariat: rue de Stassart 36, B-1060 Brussels O 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 17671999 E STDOBSI BS EN L767-ENGL 2494 I 2624bb9 0792470 3TT M Page 2
12、EN 17671999 Foreword This European Standard has been prepared by Technical Committee CENnC 104, Concrete (performance, production, placing and compliance criteria), the Secretariat of which is held by DIN. This European Standard describes a test method Specifications for the products and systems for
13、 the repair and the protection of concrete structures will be subject of separate standards. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endomment, at the latest by December 1999, and conflicting national standards shall b
14、e withdrawn at the latest by December 1999. According to the CENKENELEC Interrd Reguiations, the national standards organizations of the foilowing cornhies are bound to implement this European Standard Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Ita
15、ly, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Foreword 1 Scope 2 Normative reference 3 Pnnciple 4 - after evaporation of the solvent or water, break the skin that may have formed and put the crystallizer into a vauum oven for one how, - le
16、t the crystallizer cool to ambient temperatwe in a desiccator. - Record the infrared spectrum of the dry exhact so produced - Check, that the solvent has really evaporated entirely by using suitable IR-bands. If evaporating the solvent is difficult, because of the consistency of the mixture, the pro
17、cess can be accelerated by addmg about 25 ml of an organic solvent in the crystaher. Thoroughiy homogenize the mixture using the agitator, put the crystallizer back on the heating plate, and proceed as above. 4 Apparatus - Infrared spectropbtometm The reference - AccessoriRs qf infrared spectrometry
18、: chamber of fxed or vanable thickness, NaCl, Csi, or KRS5 windows, pelletizing press. Accessory for analysis by attenuated total reflection (ATR). range SM be at least 4 Cm- -6% Cm-. O BSI 09-1099 STD=BSI BS EN 1767-ENGL 1997 E lb246b9 0772472 172 E Page 4 EN 1767:1999 The dry extract produced may
19、not be homogeneous. To obtain a representative infrared spectrum, evaporate the product on a slide that is transparent in the infrared by piacing the slide on a heating plate. In the case of an aqueous solution or emulsion, a water-resistant KRS5 slide should be used. Using an ATR-crystal the sample
20、 can be dried with a fan. Products which contain volatile matter (e.g. shes) other than solvents will produce an IR-spectsum of the original substance only. 7.3 Measurement of products in solution or emulsion with mineral filler and product containing only a mineral filler Before recording the infra
21、red spectrum, eliminate the fller as follows - place approximately 5 g of product into a centrifuge tube; add about 30 ml of an organic solvent and mix thoroughly using a glass agitator; - centrifuge; collect the supernatant solution in a crystauer, - treat the centrifuging residue with another 30 m
22、l of organic solvent, then mix thoroughly and centrifuge; add the supernatant solution to the first solution being evaporated - wash the residue once again and add the washing solution to the crystalher then proceed as in 7.2. Then record the infrared spectrum of the dry extract produced. It should
23、be taken care, that the solvent is removed entirely by using suitable absorption bands. 8 Tkst report The test report shall at least include the following information: a) a reference to this European Standard b) all details necessary to identify the product tested, c) the type of preparation of the
24、sample; d) the infrared spectrum with details of the execution of the spectrum; e) the solvent used for extraction of the polymer binder; f) any deviation, by agreement or otherwise, from the procedure described g) the date of the test. Annex A (informative) Bibliography i DIN 51 451, 1986, prufung
25、von Minerallerzeugnissen und verwandten Produkten - Infrarotspektromethe Analyse - AUgemeine Arbeitsgrundagen. 2 NF T 51-500, 1989, Plastiques - Rsines thermodurcissables - Analyse par spectsophotomtrie infrarouge. O BSI 09-1999 BS EN 1767: 1999 BSI 389 Chiswick High Road London w4 4AL BSI - British
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