Cement and Concrete Reference Laboratory Announces Two New Calibration Standards

Two new calibration standards for use with X-ray fluorescence equipment in the chemical analysis of hydraulic cement are now available from the Cement and Concrete Reference Laboratory (CCRL). The new standards are designated Portland Cements 167 and 168, vacuum-sealed to prevent moisture uptake.

Robin Haupt, supervisor, CCRL proficiency sample program, says two new cements were used in the Portland Cement Proficiency Sample Program. The data collected from this program was used to establish certificate values for each. “In selecting these cements as calibration standards, CCRL identified cements that would supplement the current existing standards,” says Haupt. “The component percentages of these cements were specially selected for their uniqueness from other cements currently being used in calibrating X-ray fluorescence.”

CCRL is a NIST Research Associate program sponsored by ASTM International, with oversight from ASTM Committees C01 on Cement and C09 on Concrete and Concrete Aggregates. CCRL's oversight strives to improve quality testing in the construction materials industry through laboratory assessments and supplying proficiency samples.

For technical Information, contact Robin Haupt, CCRL, at 301-975-6704, or e-mail rhaupt@nist.gov