Cationic aqueous bituminous emulsion-aggregate slurries

Compositions: coating or plastic – Coating or plastic compositions – Bituminous material or tarry residue

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106273N, 106281R, 106281N, 2523115, 208 44, C08L 9500

Patent

active

044472692

ABSTRACT:
Cationic oil in water type bituminous-aggregate slurries capable of being worked are disclosed. The slurries contain a densely graded aggregate, from about 8% to about 20% of an aqueous emulsion based on the weight of the aggregate, wherein the emulsion is comprised of from about 55% to about 65% of bitumen based on the weight of the emulsion, from about 0.5% to about 2%, based on the weight of the emulsion, of the reaction products of one or more polyamines and a polycarboxylic acid of the general formula ##STR1## wherein x and y are integers from 3 to 9, x and y together equal 12, at least one Z is a carboxylic acid group and any remaining Z is hydrogen, as emulsifier, and water to make up 100% by weight. Additionally, from about 4% to about 16% water, based on the weight of the aggregate, is added to form a slurry of the aggregate and the emulsion; and up to 3% of an additive selected from the group consisting of lime and cement is employed to reduce the setting time of the mixture.

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