Decorative precast concrete boards and process for producing the

Details Decorative precast concrete boards and process for producing the Decorative precast concrete boards and process for producing the

1975-11-11

1977-06-28

Faw, Jr., Price C.

Static structures (e.g., buildings)

Opaque stonelike module

With layered stonelike components

52659, 106 98, E04B 504

Patent

active

040316840

ABSTRACT:
Decorative precast concrete boards having a pore-free decorative porcelain-tile-like, hewn-stone-like or relief surface and a porous core layer are provided. Such precast concrete boards are produced by applying inorganic cement mortar containing siliceous volcanic sand called "shirasu" in a flat mold made of an elastomeric material so as to form the pore-free surface and pouring thereon an inorganic concrete mortar containing expanded particles of said siliceous sand as the aggregate. The concrete boards do not suffer efflorescence.

REFERENCES:
patent: 2703289 (1955-03-01), Willson
patent: 3645961 (1972-02-01), Goldfein

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