Method of producing concrete composite pipe

Details Method of producing concrete composite pipe Method of producing concrete composite pipe

1989-04-13

1991-07-30

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

264311, 264333, B28B 120

Patent

active

050358502

ABSTRACT:
Concrete-type composite pipe is produced by rotating a drum mold while casting concrete thereinto to form a concrete layer of a uniform thickness using a centrifugal force exerted on the cast concrete, casting a mixture of hydrophilic resin and a hardener to form a corrosion protective resin layer on an inner surface of the formed concrete layer before the concrete layer starts to solidify, scattering aggregates or the like on the inner surface of the resin layer, accelerating the rotation to cause the aggregates or the like in the resin layer to form an intermediate layer, between the concrete layer and the corrosion protective layer, of resin, concrete, and coarse aggregates and stopping the rotation after the hardening of the corrosion protective layer.

REFERENCES:
patent: 1521264 (1924-12-01), Zehnder
patent: 2305017 (1942-12-01), Lewis
patent: 2675333 (1954-04-01), Trout et al.
patent: 3080253 (1963-03-01), Dietz et al.
patent: 3150219 (1964-09-01), Schmidt
patent: 3177902 (1965-04-01), Rubenstein
patent: 3253075 (1966-05-01), McLaughlin et al.
patent: 3341641 (1967-09-01), Spencer
patent: 3737510 (1973-06-01), Takaki
patent: 3742985 (1973-07-01), Rubenstein
patent: 4001370 (1977-01-01), Baker et al.

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