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ISO/TR 12389:2009

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Status: Check Gyldig
Norsk tittel: Methods of testing cement — Report of a test programme — Chemical analysis by x-ray fluorescence
Engelsk tittel: Methods of testing cement — Report of a test programme — Chemical analysis by x-ray fluorescence
Varetype: Standard
Språk: Engelsk
Utgave: 1 (2009-04-20)
Antall sider: 52

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Omfang: <p>This Technical Report describes the results of the inter-laboratory testing of the chemical analysis of cement by x-ray fluorescence. In the first instance, the inter-laboratory testing was carried out in Japan and in Asian countries in accordance with JIS R 5204:2002. A total of 30 laboratories, 16 in Japan and 14 outside Japan, participated in the original testing programme. A further 12 European laboratories participated in tests with the same materials in 2005 in accordance with <std><std-ref>EN 196-2</std-ref></std>, a development by CEN/TC 51/WG 15/TG 1 of JIS R 5204. The latest version, developed as <std std-id="iso:std:iso:29581:-2:en" type="undated"><std-ref>ISO 29581-2</std-ref></std>, is, as of the date of publication of this Technical Report, in the process of being circulated for technical enquiry.</p><p>The test samples used were Portland cement conforming to CEM I of <std><std-ref>EN 197-1</std-ref></std> and a mixture of Portland cement and blast furnace slag. The mixture corresponded to the composition of Portland blast furnace slag cement, class B, specified in JIS R 5211 and CEM III/A of <std><std-ref>EN 197-1</std-ref></std>. Cement reference materials for x-ray fluorescence analysis (No. 601A) are used for the calibration standards, and certified reference materials JCA-CRM-1 and JCA-CRM-2 are used as the validation materials.</p><p>Constituents analysed include SiO<sub>2</sub>, Al<sub>2</sub>O<sub>3</sub>, Fe<sub>2</sub>O<sub>3</sub>, CaO, MgO, SO<sub>3</sub>, Na<sub>2</sub>O, K<sub>2</sub>O, TiO<sub>2</sub>, P<sub>2</sub>O<sub>5</sub>, MnO and SrO. The loss on ignition is also determined.</p><p>The ISO round robin is a method-performance study conducted under close to optimum conditions with clear calibration and measurement guidelines. This is conducive to producing “best practice” values representative of the ideal situation. However, <std std-id="iso:std:iso:29581:-2:en" type="undated"><std-ref>ISO 29581-2</std-ref></std> is intended for use under everyday conditions in laboratories that operate to “good practice”. <xref ref-type="app" rid="sec_D">Annex D</xref> sets out the results of some international round robins carried out by a large number of laboratories demonstrating the suitability of <std std-id="iso:std:iso:29581:-2:en" type="undated"><std-ref>ISO 29581-2</std-ref></std> as a means for comparing the everyday performance of laboratories.</p>
Komité: SN/K 007
Fastsatt: 2009-04-20
ICS: 91.100.10 - Sement. Gips. Kalk. Mørtel