Inventors:
Richard L. Ferm - Lafayette CA
Chester C. Latif - Turlock CA
Assignee:
Chevron Research Company - San Francisco CA
International Classification:
C08L 9500
Abstract:
Quick setting, anionic bitumen emulsion compositions, suitable for road paving, recreational surfaces, etc. , are formulated by emulsifying the bitumen in water with an ammonium or alkali metal salt of a hydrocarbon-substituted sulfuric, sulfonic, phosphoric or phosphonic acid emulsifier, mixing the emulsion with a fine aggregate and, prior to spreading the aggregate emulsion mixture, introducing an alkaline earth metal set initiator. The resulting composition rapidly breaks to a hard cohesive structure, so as to permit early use by traffic.