Claims
- 1. An improved environmental enclosure structure for containing and protecting hazardous materials, explosives, telecommunications equipment, and the like, the improved environmental enclosure structure comprising:
- a cement-based fiber composite bottom wall, at least one cement-based fiber composite side wall, and a top wall defining an interior volume configured to receive and enclose hazardous materials, explosives, telecommunications equipment, and the like; and
- said cement-based fiber composite bottom wall and said cement-based fiber composite side wall each containing a uniform continuous mass of individual interlocked fibers completely infiltrated by and embedded in a cementious matrix mixture of Portland cement, fly ash, water, and a water-reducing superplasticizer and having a fiber volume density in the range of from about 4% to about 25%.
- 2. The improved environmental enclosure structure according to claim 1, including
- a surface coating of penetrating concrete sealer material on said cement-based fiber composite bottom wall, said at least one cement-based fiber composite side wall, and said top wall.
- 3. The improved environmental enclosure structure according to claim 1, in which
- said environmental enclosure structure is a monolithic structure having a contiguous bottom wall and at least one side wall integrally formed therewith, and a removable top wall.
- 4. The improved environmental enclosure structure according to claim 1, in which
- said environmental enclosure structure is a box-like structure having a cement-based fiber composite bottom wall, opposed cement-based fiber composite end walls, and opposed cement-based fiber composite side walls, each containing the recited materials.
- 5. The improved environmental enclosure structure according to claim 4, in which
- said bottom wall, said opposed end walls, and said opposed side walls are formed of individual cement-based fiber composite panels containing the recited materials and joined together to define said box-like structure.
- 6. The improved environmental enclosure structure according to claim 1, including
- a cement-based fiber composite beam surrounding said at least one side wall and being of sufficient weight to prevent up-lift of said structure due to the effect of buoyancy forces when said structure is installed underground in soil and subjected to a relatively high ground water condition.
- 7. The improved environmental enclosure structure according to claim 1, in which
- said cement-based fiber composite bottom wall extends outwardly a distance from said at least one side wall to provide a base extension of sufficient size such that when said structure is installed underground said side wall and said base extension will be buried in the soil to prevent up-lift of said structure due to the effect of buoyancy forces when said structure is subjected to a relatively high ground water condition.
- 8. The improved environmental enclosure structure according to claim 1, in which
- said mass of fibers are selected from the group of materials consisting of metal, steel, glass, plastic, and aramids.
- 9. The improved environmental enclosure structure according to claim 1, in which
- said mass of fibers are selected from the group of materials consisting of carbon and boron.
- 10. The improved environmental enclosure structure according to claim 1, in which
- each of said individual fibers is approximately 2.36" long and 0.03" in diameter with a deformed end.
- 11. The improved environmental enclosure structure according to claim 1, in which
- said cement-based fiber composite bottom wall and said cement-based fiber composite side wall each has a fiber volume density in the range of from about 5% to about 10%.
- 12. The improved environmental enclosure structure according to claim 1, in which
- said cement-based fiber composite bottom wall and said cement-based fiber composite side wall each contain one or more mats of individual interlocked strands of fibrous material completely infiltrated by and embedded in a cementious matrix mixture of Portland cement, fly ash, water, and a water-reducing superplasticizer and have a fiber volume density in the range of from about 4% to about 25%.
- 13. The improved environmental enclosure structure according to claim 12, in which
- each fiber strand of said fibrous material mat has a diameter of from about 0.008" to about 0.3".
- 14. The improved environmental enclosure structure according to claim 12, in which
- each fiber strand of said fibrous material mat is approximately 0.03" in diameter.
- 15. The improved environmental enclosure structure according to claim 12, in which
- each fiber strand of said fibrous material mat has a length of from about 4" to about 30".
- 16. The improved environmental enclosure structure according to claim 1, in which
- said cementious matrix mixture includes fine grain sand.
- 17. The improved environmental enclosure structure according to claim 1, in which
- said cementious matrix mixture includes additives selected from the group consisting of microsilica, latex modifiers, polymers, refractory castables, castable plastics, epoxies, and clay.
- 18. The improved environmental enclosure structure according to claim 1, in which
- said cementious matrix mixture includes fine grain sand and additives selected from the group consisting of microsilica, latex modifiers, polymers, refractory castables, castable plastics, epoxies, and clay.
- 19. The improved environmental enclosure structure according to claim 1, in which
- said cementious matrix mixture comprises a mixture by weight of;
- Portland cement from about 30% to about 90%,
- fly ash from about 10% to about 20%,
- fine grain sand from 0 to about 50%,
- water in a ratio of water to the sum of cement and fly ash of from about 0.20 to about 0.45, and
- a water-reducing superplasticizer in a ratio of superplasticizer to the sum of cement and fly ash of from 0 to about 40 ounces per 100 pounds of the sum of cement and fly ash.
- 20. The improved environmental enclosure structure according to claim 19, in which
- said cementous matrix mixture further includes additives selected from the group consisting of microsilica, latex modifiers, polymers, refractory castables, castable plastics, epoxies, and clay.
- 21. The improved environmental enclosure structure according to. claim 1 wherein
- said improved environmental enclosure structure is a secondary containment vault for use in isolating material storage containers and containing materials leaked therefrom, and
- said cement-based fiber composite bottom wall, said at least one cement-based fiber composite side wall, and said top wall define an interior volume configured to receive and enclose a container of hazardous material and the interior volume exceeding the volume capacity of the hazardous material container.
- 22. The improved environmental enclosure structure according to claim 1 wherein
- said improved environmental enclosure structure is a controlled environment vault for use in isolating and protecting electronic and telecommunications equipment and the like from a hostile environment;
- said cement-based fiber composite bottom wall, said at least one cement-based fiber composite side wall, and said top wall define an interior chamber configured to receive and enclose electronic and telecommunications equipment and the like which require a controlled environment; and including
- temperature control means and means associated therewith within said interior chamber for controlling the environment within said interior chamber.
- 23. The improved environmental enclosure structure according to claim 1 wherein
- said improved environmental enclosure structure is an explosion resistant structure for use in storing volatile materials, explosives, weapons and the like,
- said cement-based fiber composite bottom wall, said at least one cement-based fiber composite side wall, and said top wall define an interior chamber configured to receive and enclose volatile materials, explosives, weapons and the like, and
- said cement-based fiber composite bottom wall, said at least one cement-based fiber composite side wall, and said top wall are of sufficient thickness and strength to be substantially bullet-proof and explosion resistant.
- 24. The improved environmental enclosure structure according to claim 23 wherein
- said top wall is removably disposed at the top of said at least one cement-based fiber composite side wall and is joined to said at least one cement-based fiber composite side wall and said cement-based fiber composite bottom wall by retaining cable means.
- 25. An improved cement-based fiber composite panel for use in constructing environmental enclosures, the improved panel comprising;
- a generally flat panel of cement-based slurry infiltrated fiber composite material containing a uniform continuous mass of individual interlocked fibers completely infiltrated by and embedded in a cementious matrix mixture of Portland cement, fly ash, water, and a water-reducing superplasticizer and having a fiber volume density in the range of from about 4% to about 25%.
- 26. The improved cement-based fiber composite panel according to claim 25 including
- a metal connector on at least one end side edge of said panel, whereby
- a plurality of said panels may be joined together by securing said metal connectors together to form the bottom wall and side walls of an enclosure.
- 27. A method of forming a cement-based fiber composite environmental enclosure structure having side walls with a fiber density in the range of from about 4% to about 25% comprising the steps of;
- (a) providing a form having side walls joined together to form a frame surrounding a center space open at the top and bottom ends,
- (b) placing said frame on a generally flat surface to enclose the open bottom end,
- (c) placing a mass of fibers selected from the group of materials consisting of steel, plastic, aramids, carbon and boron into said cavity to form a bed of fibers interlocked with one another substantially filling said center space and having a fiber volume density in the range of from about 4% to about 25% with spaces between said fibers,
- (d) after forming the bed of fibers, adding a cement-based composition slurry mixture comprising Portland cement, fly ash, water, and a water-reducing plasticizer into the form components to completely infiltrate the spaces between said fibers and fill the center space defined by the form,
- (e) allowing the uncured concrete infiltrated bed of fibers to completely cure to form a hard solid mass, and thereafter
- (f) removing the cured hard solid mass from the flat surface.
- 28. The method according to claim 27 in which
- said step of placing a plurality of fibers in said center space comprises placing one or more mats of fibrous material into said center space to form a bed of fibers having a fiber volume density in the range of from about 4% to about 25%.
CROSS REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of U.S. patent application Ser. No. 07/757,813, filed Sep. 11, 1991 now U.S. Pat. No. 5,209,603.
US Referenced Citations (12)
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
757813 |
Sep 1991 |
|