Stock material or miscellaneous articles – Structurally defined web or sheet – Including grain – strips – or filamentary elements in...
Patent
1984-12-24
1986-10-14
Bell, James J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including grain, strips, or filamentary elements in...
52782, 264333, 404 70, 428105, 428247, 428284, 428288, 428221, 428703, B32B 512
Patent
active
046172190
ABSTRACT:
Reinforced cement structures are provided which are reinforced in three dimensions and comprise at least one nonwoven spatial fabric reinforcing material encapsulated in a cementitious composition which preferably has controlled water bleed characteristics. The cementitious composition comprises, for example, hydraulic cement, a gelling agent, water and optionally a dispersing agent. The nonwoven fabric reinforcing material can extend substantially throughout the whole of the cement structure. Alternatively, a plurality of reinforcing layers can be utilized in a sandwich or composite type structure in which the various reinforcing layers are separated by a layer of cementitious composition. The nonwoven fabric reinforcing material can also have, on at least one of its surfaces, a woven or non-woven scrim reinforcing material to impart additional strength properties to the structure.
The structures can take the form of panels which can be cold formed into curved structures. The structures can also take the form of load-bearing structures suitable for use as roadbeds, in bridge construction and the like.
REFERENCES:
patent: 2677955 (1954-05-01), Constantinesco
patent: 4159361 (1979-06-01), Schupack
patent: 4344804 (1982-08-01), Bijen et al.
patent: 4373981 (1983-02-01), Bomers et al.
B. Currie et al, N.I. Quarrying Yearbook, 1984, pp. 11-15.
T. Gardiner et al, Proceeding of Third International Conference of Plastics & Rubber Industry "Polypropylene Fibers & Textiles", Oct. 1983.
T. Gardiner et al, International Journal of Cement Composites and Lightweight Concrete, vol. 5, No. 3, pp. 193-197.
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