Claims
- 1. A synthetic lightweight aggregate composition comprising:
fly ash; and, two or more polymer components.
- 2. The synthetic lightweight aggregate of claim 1 wherein said fly ash is selected from the group consisting of fly ash with a carbon content greater than 6% (wt.), ammoniated fly ash, circulated fluidized bed fly ash, or mixtures thereof.
- 3. The synthetic lightweight aggregate composition in claim 1 wherein the polymer components comprises post consumer plastic waste.
- 4. The synthetic lightweight aggregate in claim 1 wherein the ratio of fly ash to polymer components ranges from about 10/90 to about 90/10.
- 5. The synthetic lightweight aggregate of claim 1 wherein said polymer components are selected from the group consisting of poly(ethylene terephthalate), high density polyethylene, low density polyethylene, polypropylene, polystyrene, poly(vinyl chloride) and high impact polystyrene.
- 6. A synthetic lightweight aggregate comprising fly ash and the following polymer components: a thermoplastic polyester, polyethylene, polypropylene, and polystyrene and polystyrene graft copolymer.
- 7. The synthetic lightweight aggregate of claim 6, wherein said thermoplastic polyester comprises poly(ethylene terephthalate).
- 8. The synthetic lightweight aggregate of claim 6, wherein said polyethylene comprises a mixture of low density polyethylene (density=0.900-0.920 g/cc) and high density polyethylene (density>0.930 g/cc).
- 9. A lightweight concrete which cures to a hardened cementious composite comprising:
Portland cement; water in a weight ratio of between about 0.2 and 0.7 of the water to the Portland cement; synthetic lightweight aggregate in a weight ratio of between about 0.1 and 0.5 of the synthetic lightweight aggregate to Portland cement; wherein said synthetic lightweight aggregate comprises fly ash and two or more polymer components.
- 10. The lightweight concrete of claim 9 wherein the fly ash is selected from fly ash having a carbon content greater than 6% (wt.), ammoniated fly ash, circulated fluidized bed fly ash, or mixtures thereof.
- 11. The lightweight concrete of claim 9 wherein the polymer components comprise post consumer plastic waste.
- 12. The lightweight concrete of claim 9 wherein the ratio of fly ash to polymer components ranges from about 10/90 to about 90/10.
- 13. The synthetic lightweight aggregate of claim 9 wherein said polymer components are selected from the group consisting of poly(ethylene terephthalate), high density polyethylene, low density polyethylene, polypropylene, polystyrene, poly(vinyl chloride) and high impact polystyrene.
- 14. An asphalt concrete composition composition paving comprising;
an asphalt binder; an aggregate component, a major portion of the aggregate being synthetic lightweight aggregate in a ratio of between about 0.1 and 0.9 of the asphalt/aggregate combination; wherein said synthetic lightweight aggregate comprises fly ash and a mixture of two or more polymer components.
- 15. The asphalt concrete composition of claim 14 wherein the fly ash is selected from fly ash having a carbon content greater than 6% (wt.), ammoniated fly ash, circulated fluidized bed fly ash, or mixtures thereof.
- 16. The asphalt concrete composition of claim 14 wherein the mixture of multiple polymer components comprises post consumer plastic waste.
- 17. The asphalt concrete composition of claim 14 wherein the ratio of fly ash to the mixture of multiple polymer components ranges from about 10/90 to about 90/10.
- 18. The synthetic lightweight aggregate of claim 14 wherein said polymer components are selected from the group consisting of poly(ethylene terephthalate), high density polyethylene, low density polyethylene, polypropylene, polystyrene, poly(vinyl chloride) and high impact polystyrene.
- 19. A lightweight aggregate for backfill and soil replacement in geotechnical applications comprising:
fly ash; and, a mixture of two or more polymer components.
- 20. The lightweight aggregate of claim 19 wherein the fly ash is selected from fly ash having a carbon content greater than 6% (wt.), ammoniated fly ash, circulated fluidized bed fly ash, or mixtures thereof
- 21. The lightweight aggregate of claim 19 wherein the polymer components comprises post consumer plastic waste.
- 22. The lightweight aggregate of claim 19 wherein the ratio of fly ash to multiple polymer components ranges from about 10/90 to about 90/10.
- 23. The lightweight aggregate of claim 19 wherein said polymer components are selected from the group consisting of poly(ethylene terephthalate), high density polyethylene, low density polyethylene, polypropylene, polystyrene, poly(vinyl chloride) and high impact polystyrene.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority to U.S. Provisional Application 60/287,136, filed Apr. 27, 2001.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60287136 |
Apr 2001 |
US |