Claims
- 1. A method for manufacturing an aggregate for use in cementitious building materials comprising the steps of:providing particles of plastic and particles of abrasive grit having diameters less than the diameters of the plastic particles; heating at least one of the group of said plastic particles and said abrasive grit to a temperature within a range of approximately 120°-480° C.; and then mixing said particles of plastic and said particles of abrasive grit together for a period of time within a range of approximately 2 seconds to 30 seconds, thereby causing said particles of plastic to become impregnated with said particles of abrasive grit.
- 2. The method, as defined in claim 1, wherein said plastic particles are further impregnated with high strength, heat resistant reinforcing fibers, said reinforcing fibers comprising at least one selected from the group consisting offiber glass, carbon fiber, and metal wire.
- 3. The method, as defined in claim 2, wherein said reinforcing fibers are imbedded within said plastic particles during said heating step.
- 4. The method, as defined in to claim 1, wherein said step of heating at least one of the group of said plastic particles and said abrasive grit comprises heating said particles of plastic to a temperature within a range of approximately 120°-480° C., and thenmixing the particles of abrasive grit, at an ambient temperature, with the heated particles of plastic for a period of time within a range of approximately 2 seconds to 30 seconds.
- 5. The method, as defined in claim 1, wherein said step of heating at least one of the group of said particles of plastic and said particles of abrasive grit comprises heating said particles of abrasive grit to a temperature-within a range of approximately 120°-480° C., and thenmixing said particles of plastic, at an ambient temperature, with said heated particles of abrasive grit for a period of time within a range of approximately 2 seconds to 30 seconds.
- 6. The method, as defined in claim 1, wherein said step of heating at least one of the group of said particles of plastic and said particles of abrasive grit comprises:heating said particles of abrasive grit to a temperature within a range of approximately 120°-480° C. heating said particles of plastic to a temperature within a range of approximately 120°-480° C., and mixing said particles of abrasive grit with said particles of plastic for a period of time within a range of approximately 2 seconds to 30 seconds.
- 7. The method, as defined in claim 1, further comprising at least one step selected from the group consisting of impregnating said plastic particleswith high strength, heat resistant reinforcing fibers during said heating and introducing gas filled voids into said plastic particles during said heating step.
Parent Case Info
This application is related to Provisional patent application, Ser. No. 60/124,187, filed Mar. 15, 1999, and a Continuation-In-Part of application, Ser. No. 09/525,592, filed Mar. 15, 2000 now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (5)
Number |
Date |
Country |
08034647 |
Feb 1996 |
JP |
08034648 |
Feb 1996 |
JP |
11100919 |
Apr 1999 |
JP |
11147739 |
Jun 1999 |
JP |
WO9850318 |
Nov 1998 |
WO |
Non-Patent Literature Citations (1)
Entry |
(Note: All Japanese References are Abstracts). |
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/124187 |
Mar 1999 |
US |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09/525592 |
Mar 2000 |
US |
Child |
09/984504 |
|
US |