ACCELERATED DEGRADATION EVALUATION METHOD AND APPARATUS

摘要

An apparatus (10) and method are provided for measuring the physical strength and ability of a solid sample (25), to resist breakdown into fines after repeated cycles of hydratation and regeneration of temperatures in excess of 100°C. The test samples are evaluated using an accelerated degradation apparatus that subjects the sample to a predetermined number of timed cycles of wetting/drying under heat and vacuum, and the weight-percent of any fines produced by the degradation of the sample are measured and recorded after a prescribed number of cycles. Specific values are used for predicting potential useful service life, in years of samples from different commercial manufacturers of the same class of product; the resulting data can be used by manufacturers for more effectively quality control of production batches.