Method for making sleeve encased concrete posts
AssigneePerma-Post International, Inc.
InventorMelvin D. Martin
Life of this patent
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Abstract
A process for producing a concrete post having a sleeve that functions as a pouring form during pouring of the posts, a protective shield during shipping and storage thereof, and a strengthening component upon installation. The post is produced in a process whereby multiple, replacable sleeves are provided in a rack which are simultaneously filled from a hopper. The sleeve cavities are substantially free of rebar to facilitate pouring and reduce cost, the sleeve replacing the rebar as the strengthening component.
Claims1
A method of producing a combination concrete core-plastic sleeve encased post wherein strength of said concrete core is enhanced by toughness of said plastic sleeve to thereby permit reduced rebar re-enforcement of said concrete core by eliminating rebar re-enforcement near said plastic sleeve which encases said concrete core, and to thereby produce a less expensive, long lasting combination concrete core-plastic sleeve encased post, said method comprising;
- supporting a tubular sleeve produced from a recyclable, tough plastic cushioning material in an upright position, said tubular sleeve defining an inner wall surrounding a sleeve cavity,
- maintaining said sleeve cavity open to substantially uninhibited flow of concrete slurry by eliminating rebar re-enforcement adjacent said inner wall of said tubular sleeve,
- providing a quantity of tire chips no larger than about 0.5 inch and produced from discarded tires,
- producing a concrete slurry wherein a portion of rock filler used for producing said concrete slurry is replaced with said quantity of tire chips,
- filling said open tubular sleeve cavity with said concrete slurry containing said quantity of tire chips while vibrating said tubular sleeve to generate complete filling and compression of said slurry within and against said inner wall of said tubular sleeve, and
- allowing a drying time for said concrete slurry only adequate to solidify said concrete slurry into a partially cured concrete core within said tubular sleeve, then removing said partially cured concrete core filled tubular sleeve from said upright position to provide for full curing of said concrete core within said tubular sleeve into said combination concrete core-plastic sleeve encased post during interim storage and shipment of said combination concrete core-plastic sleeve encased post to an end user for installation, said plastic tubular sleeve functioning as a protective encasement and shock absorber for said curing concrete core during said interim storage and shipment of said combination post.
Dependencies are inferred from the claim text.