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US 2012/0267188 A1Published application
Sound barrier wall
AssigneeConcrete Innovation Services
InventorsStephen McCOWIN, Paul OGORCHOCK
Life of this patent
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Abstract
A monolithically fabricated sound absorbing structural precast concrete noise barrier panel comprising a sound absorbing layer of specialized raw materials. The raw materials include wood particles as well as granulated rubber.
Claims16
A monolithically fabricated sound absorbing structural precast panel comprising:
- A) a sound absorptive layer that is a blended mixture wherein the blended mixture is selected from the group consisting of expanded aggregate, natural aggregate, and manmade aggregate;
- B) granulated rubber;
- C) chemically treated wood particles;
- D) cement;
- E) pozzolan;
- F) water;
- G) air entraining admixture;
- and
- H) water reducing mixture.
6 more elements
(canceled)
(canceled)
A composite sound absorbing structural concrete noise barrier having a sound absorbing layer comprising:
- 19% to 30% by volume cement and Pozzolan;
- 16%-23% by volume aggregate;
- 15% to 22% by volume wood particles;
- 19%-28% by volume granulated rubber;
- 8%-15% by volume potable water;
- 5-40 oz per cubic yard air entraining admixture;
- and
- 5-15 oz per cubic yard water reducing admixtures,
- all with volume being based upon 1 cubic yard.
6 more elements
(canceled)
The composite sound absorbing structural concrete noise barrier of claim 16, further comprising mesh reinforcement elements located on the supporting units.
Dependencies are inferred from the claim text.