Call to Develop ASTM Standards for X-Ray Fluorescence Analysis of Cement
ASTM Subcommittee C01.23, Compositional Analysis, in Committee C01 on Cement has launched a new Task Group on X-Ray Fluorescence Analysis. The groups first order of business is to draft a Standard Test Method for X-Ray Spectrometric Analysis of Hydraulic Cement, applicable to hydraulic cement and similar materials analyzed with ASTM C 114, Standard Test Methods for Chemical Analysis of Hydraulic Cement.
Subcommittee member LeRoy Jacobs of Wyoming Analytical Labs will chair the new task group. He invites participation from:
XRF spectrometer manufacturersspecifically applications engineers with experience of the cement sector;
Suppliers of XRF sample preparation equipment familiar with the cement sector;
Professional cement analysts with XRF experience; and
Academics specializing in the field of X-Ray fluorescence theory andpractice.
X-ray fluorescence spectrometry has been the favored method of analysis in most cement laboratories for 30 years, but inter-laboratory comparisons indicate that precision at the majority of installations falls short of that obtainable from classical methods, says subcommittee chairman Dylan Moore, Eglwyswrw, Pembrokeshire, UK. In comparison with other methods, modern XRF equipment potentially provides the most precise analysis for cements, in addition to its well-established reputation for minimum analysis time and minimum cost-per-analysis. The intention of the subcommittee is that the proposed test method should provide guidance to all XRF users to ensure that the precision performance gap is eliminated.
Moore says the proposed ASTM test method can benefit both manufacturers and users through:
Improved precision directly improves the effectiveness of manufacturing process control;
Reduced product variability;
Measured chemical analysis data that correlates better with observed product performance; and
Reduced incidence of disputes concerning compliance data.
To join the development of this standard, contact LeRoy Jacobs of Wyoming Analytical Labs, Golden, Colo. (phone: 303/278-2446). Committee C01 meets June 18-20 in Denver. For membership or meeting details, contact Jim Olshefsky, director, Committee Services, ASTM International (phone: 610/832-9714). //
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