Lightweight block containing stabilized wood aggregates

Details Lightweight block containing stabilized wood aggregates Lightweight block containing stabilized wood aggregates

1993-04-21

1995-04-11

Britts, Ramon S.

Road structure, process, or apparatus

Pavement

Modules or blocks

404 36, 106805, E01C 522

Patent

active

054052114

ABSTRACT:
A lightweight block useful as a patio tile, a border piece or a landscaping component, which has a density of 800 to 1,200 kg/m.sup.3 and is made from a concrete mix comprising stabilized wood aggregates prepared by sterilization of wood chips by thermal treatment, followed by a chemical treatment with a calcium salt first and then with at least one soluble silicate, the concrete mix also comprising, based on 750 liters of the stabilized wood aggregates: from 200 to 350 kg of sand; from 200 to 350 kg of cement, such as silica fume or Portland cement; from 8 to 15 kg of polymer additive, preferably a melamine-based polymer; from 80 to 175 kg of water; and optionally, at least one pigment such as iron oxide. This block is particularly interesting in that it is lightweight, it has a high bending resistance; it has a pronounced and decorative texture; and it is very porous, thereby making it self-draining and efficient as a sound absorber.

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patent: 5106557 (1992-04-01), Rirsch et al.
patent: 5167991 (1992-12-01), Lowe

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