Insulating cementitious mixture and method of use
OwnerDave D. Barrett, Jr.inventor
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Abstract
A cementitious mixture including water-repellent vermiculite, polypropylene fibers and cement. A preferred embodiment utilizes: asphalt-coated, expanded vermiculite; collated, fibrillated polypropylene fibers; and non-shrinking Portland cement. Test data indicates a greatly increased compressive strength compared to previously known vermiculite insulating concretes. A prefabricated building panel utilizing the mixture of the present invention, and a method of manufacture thereof, are also disclosed. Calculated R values indicate good thermal insulating characteristics.
Claims20
A cementitious mixture comprising:
- a coated, insulating aggregate;
- cement;
- and
- a fibrous material for binding and distributing said aggregate in said cement when admixing said mixture with water.
A hardened material produced by curing a mixture comprising:
- water-repellent vermiculite;
- cement;
- water;
- and
- a fibrous material for binding and distributing said vermiculite in said cement and water as it is mixed and cured.
A hardened material produced by curing a mixture comprising:
- asphalt-coated, expanded vermiculite in a concentration of approximately 20 pounds per approximate cubic yard of said hardened material;
- collated, fibrillated polypropylene fibers in a concentration of approximately 1.6 pounds per approximate cubic yard of said hardened material;
- non-shrinking Portland cement in a concentration of approximately 94 pounds per approximate cubic yard of said hardened material;
- and
- water in a concentration of approximately 60 to 100 gallons per approximate cubic yard of said hardened material.
Dependencies are inferred from the claim text.