After its formation in 2004, ASTM Subcommittee C09.48, on the Performance of Cementitious Materials and Admixture Combinations, has just released its first standard: C 1679, Practice for Measuring Hydration Kinetics of Hydraulic Cementitious Mixtures Using Isothermal Calorimetry.
Subcommittee C09.48 was formed to set industry standards for concrete mixtures (as opposed to individual materials standards). By standardizing testing practices for concrete mixtures, the subcommittee has laid the groundwork for future standards on material compatibility in concrete mixtures. The C 1679 standard is geared towards manufacturers of various concrete products, as well as contractors and testing laboratories.
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