Method for preparing a finished concrete part

Details Method for preparing a finished concrete part Method for preparing a finished concrete part

1979-06-12

1982-05-25

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Starting material is nonhollow planar finite length preform...

264 71, 264220, 264316, 264338, B28B 736

Patent

active

043316280

ABSTRACT:
A finished concrete part is prepared in a casting mold with a perforated mold wall. A pliable thermoplastic film is placed over the inner surface of the casting mold wall, the film is heated sufficiently to make is supple enough to conform to the inner mold wall surface, the supple film is sucked against the inner mold wall surface under vacuum, the lined mold is filled with concrete, the concrete is permitted to harden in the lined mold while being vibrated to compact the concrete in the mold during hardening, and the hardened finished concrete part is removed from the mold.

REFERENCES:
patent: 3492384 (1970-01-01), Matthews
patent: 3995086 (1976-11-01), Plungian

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