Ring and Ball Apparatus
This apparatus is meant for determination of softening point of bituminous materials. Softening point is that temperature at which the specimen under test becomes soft enough to allow a steel ball of specific dimension to fall a required distance under test condition. The apparatus consists of Glass beaker of heat resistant glass having internal diameter of 8.5 cm X 12 cm depth (approximately), two steel balls each of 9.5mm diameter, two tapered brass rings, two ball guides, ring stand and a hand stirrer.
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