Research Report RR:C16-1006
Seven participants participated in this Interlaboratory study, during which an interlaboratory test was performed on Calcium-silicate block thermal insulation (ASTM-C533, Type 1) to develop a precision statement for Test Method ASTM-C421, Tumbling Friability of Preformed Block-Type Thermal Insulation. The precision of Test Method ASTM-C421 already had been determined for rigid cellular plastic thermal insulation (RR: C16-1006), but Committee C16 required that an additional material be included in the precision statement.
C421-08(2014) Standard Test Method for Tumbling Friability of Preformed Block-Type and Preformed Pipe-Covering-Type Thermal Insulation
Committee C16 on Thermal Insulation
Subcommittee C16.32 on Mechanical Properties