Plastic and nonmetallic article shaping or treating: processes – Forming stressed concrete articles
Patent
1976-06-01
1979-04-24
Pavelko, Thomas P.
Plastic and nonmetallic article shaping or treating: processes
Forming stressed concrete articles
52223R, 52602, 264265, 264DIG57, B28B 2304
Patent
active
041512448
ABSTRACT:
A method of making a pre-cast concrete building panel wherein a sheet of hardboard is soaked in water, and while it is still wet, it is covered with a thin skin of concrete and there is formed a peripheral edge region of concrete to embed the hardboard edges. The subsequent drying out of the concrete and hardboard has the effect of binding together the hard-board and concrete, and pre-stressing the concrete.
REFERENCES:
patent: 664710 (1900-12-01), Aunkst
patent: 3533203 (1970-10-01), Fischer
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