University of Illinois Urbana-Champaign

Cooperative Calibration and Analysis of Cement Clinker Phases, Report 2

Struble, L.J.

Content Files
SRS-556.pdf

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https://hdl.handle.net/2142/14174

Description

Title
Cooperative Calibration and Analysis of Cement Clinker Phases, Report 2
Author(s)
Struble, L.J.
Issue Date
1990-09
Keyword(s)
Cement Clinker Phases
Date of Ingest
2009-11-05T23:30:48Z
Abstract
A cooperative calibration was carried out by ASTM Task Group C01.23.01 as part of an effort to assess the use of X-ray diffraction analysis for determining the proportion of tricalcium aluminate (cubic and orthorhombic), tetracalcium aluminoferrite, and magnesium oxide in portland cement and clinker. That calibration, including statistical analysis to determine precision and bias, was described in an earlier report. Since that previous rePOI4 some additional data have been submitted and the statistical analysis repeated. The subsequent analysis showed that the calibration precision were improved, though only slightly. With these additional data. Based on this statistical analysis, repeatability and reproducibility levels may be specified for analysis of these 4 phases in unknown mixtures prepared from the same materials. Replicate analyses in the same laboratory should differ by no more than 1.1 % (relative to the total clinker) [the previous level was also 1.1 %]. Replicate analyses in different laboratories should differ by no more than 1.7% (relative to the total clinker) [the previous level was 1.8%]. Overall, analyses should differ from the known value by no more than 1.7% (relative to the total clinker). The measured values differ from the known values by less than the reproducibility standard deviation, so there appears to be no bias in these results.
Publisher
University of Illinois Engineering Experiment Station. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report Name or Number
Civil Engineering Studies SRS-556
Type of Resource
text
Genre of Resource
Technical Report
Language
en
Permalink
http://hdl.handle.net/2142/14174

Owning Collections

Civil Engineering Studies: Structural Research Series PRIMARY