Process of manufacturing concrete moldings

Details Process of manufacturing concrete moldings Process of manufacturing concrete moldings

1974-09-03

1976-05-25

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264 71, 264333, 264336, 264DIG43, B06B 300, B28B 108

Patent

active

039594220

ABSTRACT:
A concrete mixture is provided which is homogeneous and free of lumps and comprises 5-15 parts by weight of sand, 2-3 parts by weight of cement and 1 part by weight of water. Said mixture is charged into a mold in a molding machine in a charging operation having a duration of about 30-120 seconds. Said mold is vibrated in said molding machine in a vibrating operation from the beginning of said charging operation until after said charging operation, whereby said mixture is compacted and air is expelled from said mold and a molding is formed therein. At least part of said mold is removed from said molding when said vibrating operation has been completed and before said molding has completely set. Said molding is stored outside said molding machine until said molding has completely set.

REFERENCES:
patent: 1453746 (1923-05-01), Carey
patent: 2161822 (1939-06-01), Kogl
patent: 2614312 (1952-10-01), Rankin
patent: 3047929 (1962-08-01), Steiro
patent: 3055146 (1962-09-01), Lobato
patent: 3711587 (1973-01-01), O'Connor
patent: 3739050 (1973-06-01), Koncz

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