PREPARATION OF MIXTURES Preparation of the mixture shall conform to the specification requirements outlined in Section 302, Bituminous Stabilized Course. The moisture content requirement shall be waived and the producer shall determine the mix proportions as outlined previously in the Composition of Mixtures section of this specification. INSPECTION, TESTING AND ACCEPTANCE The following stripping test shall be conducted on the pug mill mixed materials: STRIPPING TEST A suitable size sample of the pug mill mixed material shall be permitted to stand at normal laboratory temperatures for at least 24 hours after which it shall be placed in a glass jar, fitted with a tight cover, and covered completely with potable water. The jar and contents shall then be allowed to stand for a period of 24 hours at normal laboratory temperatures (approximately 70°F). The sample shall then be shaken vigorously for 15 minutes. The water shall then be poured from the jar and the sample removed to a flat surface and permitted to air dry after which it shall be visually examined for stripping of the bituminous film from the aggregates. The aggregate surfaces shall be at least 90% coated with the bituminous film. The initial approval of a mixture or the initial acceptance of material shall in no way preclude further examination and testing if unsatisfactory results are achieved. The acceptance at any time shall not bar its future rejection.
