Claims
- 1. A process for improving the resistance to the penetration and absorption of water and the early strength of a cement aggregate product, comprising:combining an amount of an aqueous emulsion of rosin or wax, sufficient to improve the early strength of the cement aggregate product with water to form a substantially aqueous mixture, and utilizing said substantially aqueous mixture as an aqueous ingredient in the preparation of the cement aggregate product.
- 2. The process of claim 1, wherein the rosin or the wax comprises at least about 0.25 percent by weight of the cement in the cement aggregate product.
- 3. The process of claim 1, wherein the aqueous emulsion is an aqueous emulsion of a wax selected from the group consisting of paraffin wax, microcrystalline wax, slack wax and mixtures thereof.
- 4. The process of claim 3, wherein the wax comprises at least 0.75 percent by weight of the cement in the cement aggregate product.
- 5. The process of claim 3, wherein the aqueous emulsion of a wax comprises at least one microcrystalline wax; a minor amount of surfactant compatible with cement, aggregate and water mixtures; and water.
- 6. The process of claim 3, wherein the aqueous emulsion of a wax comprises at least one slack wax; a minor amount of a surfactant compatible with cement; aggregate and water mixtures; and water.
- 7. The process of claim 2, wherein the aqueous emulsion further comprises a minor amount of surfactant compatible with mixtures of cement, aggregate and water.
- 8. The process of claim 7, wherein the surfactant is a sodium lignosulfonate surfactant.
- 9. A cementitious composition for use in the preparation of a cementitious product having improved resistance to water penetration and absorption and improved early strength, comprising:a minor amount of a mixture composed of an aqueous emulsion of rosin or wax in an amount sufficient to improve the resistance to water penetration and absorption and the early strength of the cementitious product; a major amount of water; cement; and aggregate.
- 10. The cemetitious composition of claim 9, wherein the rosin or the wax comprises at least about 0.25 percent by weight of the cement in the cement aggregate product.
- 11. The cementitious composition of claim 10, wherein the aqueous emulsion is an aqueous emulsion of wax selected from the group consisting of paraffin wax, microcrystalline wax, slack wax and mixtures thereof.
- 12. The cementitious composition of claim 11, wherein the aqueous emulsion of wax comprises at least one microcrystalline wax; a minor amount of a surfactant compatible with cement, aggregate and water mixtures; and water.
- 13. The cementitious composition of claim 11, wherein the aqueous emulsion of wax comprises at least one slack wax; a minor amount of a surfactant compatible with cement, aggregate and water mixtures; and water.
- 14. The cementitious composition of claim 10, wherein the aqueous emulsion of a wax further comprises a surfactant compatible with mixtures of cement, aggregate and water.
- 15. The cementitious composition of claim 14, wherein the surfactant is a sodium lignosulfonate surfactant.
Parent Case Info
This is a continuation-in-part of Application No. 09/455,295, filed Dec. 6, 1999; now U.S. Pat. No. 6,315,825, issue Nov. 13, 2001.
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Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09/455295 |
Dec 1999 |
US |
Child |
10/082931 |
|
US |