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1、BRITISH STANDARD BS EN 480-6:2005 Admixtures for concrete, mortar and grout Test methods Part 6: Infrared analysis The European Standard EN 480-6:2005 has the status of a British Standard ICS 91.100.10; 91.100.30 ? BS EN 480-6:2005 This British Standard was published under the authority of the Stand
2、ards Policy and Strategy Committee on 30 December 2005 BSI 30 December 2005 ISBN 0 580 47267 1 National foreword This British Standard is the official English language version of EN 480-6:2005. It supersedes BS EN 480-6:1997 which is withdrawn. The UK participation in its preparation was entrusted b
3、y Technical Committee B/517, Concrete, to Subcommittee B/517/3, Admixtures, which has the 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 publicat
4、ions 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 Online. This publication does not purport to include all the necess
5、ary provisions of a contract. Users are responsible for its 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 responsible international/European committee any enquiries on the interp
6、retation, or proposals for change, and keep 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 cover, the EN title page, pages 2 to 5 and a back cover. The BSI copyright
7、 notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 480-6 September 2005 ICS 91.100.10; 91.100.30Supersedes EN 480-6:1996 English Version Admixtures for concrete
8、, mortar and grout - Test methods - Part 6: Infrared analysis Adjuvants pour bton, mortier et coulis - Mthodes dessai - Partie 6: Analyse infrarouge Zusatzmittel fr Beton, Mrtel und Einpressmrtel - Prfverfahren - Teil 6: Infrarot-Untersuchung This European Standard was approved by CEN on 28 July 200
9、5. 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 references concerning such national standards may be obtained o
10、n application to the Central Secretariat 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 into its own language and notified to the Central Secretaria
11、t has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal
12、, Slovakia, Slovenia, 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 2005 CENAll rights of exploitation in any form and by any means reserved wo
13、rldwide for CEN national Members. Ref. No. EN 480-6:2005: E EN 480-6:2005 (E) 2 Contents Page Foreword 3 1 Scope.4 2 Normative references .4 3 Principle.4 4 Apparatus4 5 Procedure4 5.1 Preparation of the dry material 4 5.2 Infrared spectrophotometry.4 6 Results.5 7 Test report.5 EN 480-6:2005 (E) 3
14、Foreword This European Standard (EN 480-6:2005) 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 status of a national standard, either by publication of an identical text or by endo
15、rsement, at the latest by March 2006, and conflicting national standards shall be withdrawn at the latest by March 2006. It has been drafted by Subcommittee 3 (SC 3) of TC 104 “Admixtures for concrete, mortar and grout“. This document is part of the series EN 480 “Admixtures for concrete, mortar and
16、 grout Test methods“ which comprises the following Part 1 Reference concrete and reference mortar for testing Part 2 Determination of setting time Part 4 Determination of bleeding of concrete Part 5 Determination of capillary absorption Part 6 Infrared analysis Part 8 Determination of the convention
17、al dry material content Part 10 Determination of water soluble chloride content Part 11 Determination of air void characteristics in hardened concrete Part 12 Determination of the alkali content of admixtures Part 13 Reference masonry mortar for testing mortar admixtures Part 14 Admixtures for concr
18、ete, mortar and grout - Test methods - Part 14: Measurement of corrosion susceptibility of reinforcing steel in concrete - Potentiostatic electro-chemical test method 1) This document is applicable together with the other standards of the EN 480 series. This document supersedes EN 480-6:1996. Accord
19、ing to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuani
20、a, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. 1) This part is under preparation EN 480-6:2005 (E) 4 1 Scope This document describes a method for identifying an admixture by infrared analysis (IR). 2 Normative reference
21、s The following referenced documents are indispensable for the 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 480-8:, Admixtures for concrete, mortar and
22、grout - Test methods - Part 8: Determination of the conventional dry material content. 3 Principle The IR analysis is performed on dry material from an admixture dried at (105 3) C, unless a different temperature is stated by the manufacturer. The residue from the determination of the conventional d
23、ry material content according to EN 480-8 may be used. 4 Apparatus 4.1 Infrared spectrometer with accessories (cells, pelleting press, NaCl windows, etc.); 4.2 Evaporating dish with a flat bottom ca. diameter 75 mm, depth 45 mm; 4.3 Desiccator; 4.4 Oven with forced ventilation2), thermostatically co
24、ntrolled at (105 3) C, fitted with a temperature indicating device. The required temperature range shall be maintained throughout the parts of the oven used for this test; 4.5 Balance with an accuracy of 0,5 g. 5 Procedure 5.1 Preparation of the dry material The method given in EN 480-8 shall be use
25、d3). 5.2 Infrared spectrophotometry Depending upon the consistence of the dry extract obtained, the test shall be carried out either on a thin film spread on the NaCl window (or KBr or CsI window depending upon the equipment available) using a spatula, 2) Fan circulation is necessary to ensure unifo
26、rm temperature throughout the oven. 3) Any water in the dry extract will affect the resulting IR spectrum. If this occurs, the period of drying should be extended to remove all water but not to cause breakdown or evaporation of other constituents. EN 480-6:2005 (E) 5 or a KBr pellet. To make the pel
27、let the dry residue shall be pulverised and mixed with potassium bromide (KBr). The mixture shall be pressed into a pellet. The quantity of dry extract in the mixture shall be about 1 % by mass and shall be adjusted so that a spectrum of good quality is obtained (e.g. from 0,25 % to 1,5 %). The spec
28、trum shall be recorded between 4 000 cm-1 and 600 cm-1 (or if possible up to 250 cm-1).4) 6 Results The sample subjected to the test shall be regarded as conforming or non-conforming to the reference sample on the basis of whether the spectra do or do not have similar characteristic peaks with corre
29、sponding relative absorptions5). 7 Test report The recorded spectra shall be identified by means of: name or code of the material with all information relating to its marking; date of the test, the name of the laboratory, the type of equipment, the name of the operator; origin of the sample; drying
30、procedure; preparation of the samples, e.g. film or KBr pellet containing x %. 4) This procedure corresponds to the preparation of samples as generally adopted until now. The development of new instruments may affect the method of preparing the sample. These new methods may be accepted if they ensur
31、e an accuracy similar to that of the method described above. 5) Evaluation of the characteristic of conformity requires good experience in infrared spectrophotometry. BS EN 480-6:2005 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body resp
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