Bsi bs en 00480 6 2005

untitled 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[.]

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

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BS EN 480-6:2005

This British Standard was

published under the authority

of the Standards 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EN 480-6:2005 It supersedes BS EN 480-6:1997 which is withdrawn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 by 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

publications 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 necessary provisions of a contract Users are responsible for its correct application

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enquiries on the interpretation, or proposals for change, and keep UK interests informed;

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 notice displayed in this document indicates when the document was last issued

Amendments issued since publication

EUROPEAN STANDARD

NORME EUROPÉENNE

EUROPÄISCHE NORM

EN 480-6

September 2005

English Version

Admixtures for concrete, mortar and grout - Test methods - Part

6: Infrared analysis

Adjuvants pour béton, mortier et coulis Méthodes d'essai

-Partie 6: Analyse infrarouge

Zusatzmittel für Beton, Mörtel und Einpressmörtel -Prüfverfahren - Teil 6: Infrarot-Untersuchung

This European Standard was approved by CEN on 28 July 2005.

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 on 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 Secretariat 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, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION

C O M I T É E U R O P É E N D E N O R M A L I S A T I O N

E U R O P Ä I S C H E S K O M I T E E F Ü R N O R M U N G

Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2005 CEN All rights of exploitation in any form and by any means reserved

worldwide for CEN national Members.

Ref No EN 480-6:2005: E

EN 480-6:2005 (E)

Contents

Page

Foreword 3

1 Scope 4

2 Normative references 4

3 Principle 4

4 Apparatus 4

5 Procedure 4

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

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 endorsement, 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 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 conventional 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 concrete, 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

According 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, Lithuania, 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)

1 Scope

This document describes a method for identifying an admixture by infrared analysis (IR)

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 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 dry 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 controlled 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

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 uniform 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 pellet 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 %)

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 corresponding relative

The recorded spectra shall be identified by means of:

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 ensure 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

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