New Test Method Indicates Pack-Setting of Cement
Subcommittee C01.20 on Additions in ASTM Committee C01 on Cement has developed new C 1565, Standard Test Method for Determination of Pack-Set Index of Portland Cement. Using the test method results in an indication of flowability during manufacture and transfer of portland cement.
The advantages derived from the pack set test method are the availability of a tool to help plant-operations personnel accurately gauge their grinding operations for optimization of their finish mill circuit(s), says Todd Hinton, assistant manager, Trans Colorado Concrete, Colorado Springs.
The new method is based upon the pack-set index test which was developed by W.R. Grace, and has been in use by the cement industry for many years, says Dave Norris, Quality Control manager, TXI Riverside Cement, Oro Grande, Calif. The incorporation of the method into ASTM documents will standardize the test method, provide consistent procedures, and provide a framework for method improvement and development.
Hinton and Norris developed Standard C 1565 with professionals from cement and concrete production/operations, academia and other sectors, the U.S. Army Corps of Engineers, and other government agencies.
For further information, contact Hinton at Trans Colorado Concrete, Colorado Springs (phone: 719/392-0559); or Norris at TXI Riverside Cement Company, Oro Grande, Calif. (phone: 760/245-5321). Committee C01 meets Dec. 10-12 in Tampa, Fla. For membership or meeting details, contact Jim Olshefsky, director, Committee Services, ASTM International (phone: 610/832-9714). //
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