Earthen dam structure
AssigneePrince Mohammad Bin Fahd University
InventorsTahar Ayadat, Andi Asiz
Life of this patent
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Abstract
The present disclosure discloses an earthen dam structure including a core wall that includes a homogeneous mixture of clay, sand, powdered tire rubber and Portland cement. Additionally, the core wall contains the powdered tire rubber in an amount sufficient to increase a modulus of elasticity of the core wall to over 10 MPa while keeping a hydraulic conductivity of the core wall under 100 feet/year. The earthen dam structure further includes an upstream embankment portion and a downstream embankment portion, each positioned adjacent to the core wall, and a spillway configured to prevent water from overtopping a crest of the core wall.
Claims18
An earthen dam structure, comprising:
- a core wall including a homogeneous mixture of clay, sand, powdered tire rubber and Portland cement, and the core wall contains the powdered tire rubber in an amount sufficient to increase a modulus of elasticity of the core wall to over 10 MPa while keeping a hydraulic conductivity of the core wall under 100 feet/year;
- an upstream embankment portion positioned adjacent to the core wall;
- a downstream embankment portion positioned adjacent to the core wall, wherein the core wall is arranged between the upstream embankment portion and the downstream embankment portion;
- a spillway configured to prevent water from overtopping a crest of the core wall;
- and
- a liner system adjacent to the core wall, wherein the liner system comprises sand, bentonite, powdered tire rubber, lime and fly ash.
An earthen dam structure, comprising:
- a core wall including a homogeneous mixture of clay, sand, powdered tire rubber and Portland cement, and the core wall contains the powdered tire rubber in an amount sufficient to increase a modulus of elasticity of the core wall to over 10 MPa while keeping a hydraulic conductivity of the core wall under 100 feet/year;
- an upstream embankment portion positioned adjacent to the core wall;
- a downstream embankment portion positioned adjacent to the core wall, wherein the core wall is arranged between the upstream embankment portion and the downstream embankment portion;
- and
- a spillway configured to prevent water from overtopping a crest of the core wall;
- wherein:
- the clay has a weight fraction of 50-60% in the core wall,
- the sand has a weight fraction of 10-15% in the core wall,
- the powdered tire rubber has a weight fraction of 15-30% in the core wall, and
- the Portland cement has a weight fraction of 10-15% in the core wall.
Dependencies are inferred from the claim text.