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US 5,849,070 AGranted
Compound binder, process for obtaining it and its application in highway surfacings
AssigneeColas
InventorsRene Chambard, Jacques Gaultier, Robert Pellion, Gerard Perrono
Life of this patent
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Abstract
Compound binder comprising an aqueous emulsion of at least one hydrocarbon binder and, at least one hydraulic binder, which also contains at least one adjuvant intended to control the rate of setting of the hydraulic binder in order to obtain a liquid product with a viscosity of less than 1 Pa.s.
Claims20
A process for producing a homogeneous storable compound binder comprising:
- a) introducing at least one surfactant into water at a temperature of between approximately 10.degree. C. and 80.degree. C.;
- b) separately heating at least one hydrocarbon binder to a temperature of between approximately 100.degree. C. and 200.degree. C.;
- c) mixing the surfactant in water of a) with the at least one hydrocarbon binder of b), so as to obtain an aqueous emulsion;
- d) conveying the aqueous emulsion to a homogenizer, while separately introducing at least one hydraulic binder into the homogenizer, so that the aqueous emulsion is present from about 23 to 74.8 weight percent and said at least one hydraulic binder is present from about 24.9 to 76.8 weight percent;
- and
- e) introducing at least one adjuvant at any stage to control rate of setting of the at least one hydraulic binder, the at least one adjuvant being introduced in an amount effective to control rate of setting of the at least one hydraulic binder in order to obtain a homogeneous storable liquid product which is capable of maintaining a viscosity of less than 1 Pa.s.
3 more elements
A process of surfacing a highway, said process comprising applying a compound binder as a surfacing material, the compound binder comprising a homogeneous storable compound binder comprising:
- a) about 23 to 74.8 weight percent of an aqueous emulsion of at least one hydrocarbon binder;
- b) about 24.9 to 76.8 weight percent of at least one hydraulic binder;
- and
- c) at least one adjuvant in an amount effective to control rate of setting of said at least one hydraulic binder, in order to obtain a homogeneous storable liquid product capable of maintaining a viscosity of less than 1 Pa.s.
1 more element
Dependencies are inferred from the claim text.