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US 2012/0018363 A1Published application
Precast 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, comprising:
- a body composed of a combination of aggregate particles, cementitious materials, and water, and wherein the body includes a void content of about 10% to about 30%.
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.
3 more elements
Dependencies are inferred from the claim text.