Pre-cast pervious concrete
AssigneePercoa, Inc.
InventorsBrett Eugene Pomerleau, Katherina Theresa Bernhagen, Ryan Eugene Becker
Life of this patent
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Abstract
A pervious concrete slab is pre-cast in a reusable mold or form to define at least one keyway configured and arranged to engage with a complementary keyway of another similar pre-cast pervious concrete slab. The concrete slab is then cured in a controlled environment, transported to an installation site, and installed.
Claims20
A pre-cast pervious concrete slab formed in a mold through vibration and compression, the pre-cast pervious concrete slab, comprising:
- a body having opposite first and second side edges and opposite third and fourth side edges, the body being composed of a combination of aggregate particles, cementitious materials, and water, and wherein the body includes an interconnected void content of about 10% to about 30%;
- a lifting feature for allowing the slab body to be lifted, the lifting feature being integrated into the slab body and extending continuously between two of the first, second, third, and fourth side edges;
- and
- an alignment feature for aligning the slab body with another pre-cast pervious concrete slab, the alignment feature being located at one of the first, second, third, and fourth side edges.
A water filtration system, comprising:
- a plurality of pervious concrete pavers, each composed of a combination of aggregate particles, cementitious materials, and water, and including a void content of about 10% to about 30%;
- and
- a filtration layer positioned beneath the plurality of pervious concrete pavers within the ground surface.
A method of forming a pre-cast pervious concrete slab for a water filtration system, comprising:
- forming a mixture comprising aggregate particles, hydraulic cement, and water;
- pouring the mixture into a mold to define the pervious concrete slab;
- vibrating the mixture within the mold for a first predetermined time period, wherein a frequency of the vibration is in a range of about 10 Hz to about 1000 Hz;
- compressing the mixture within the mold for a second predetermined time period, wherein a pressure of the compression is in a range of about 10 psi to about 1000 psi;
- and
- releasing the pervious concrete slab from the mold following the second predetermined time period.
Dependencies are inferred from the claim text.