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US 5,290,356 AGranted
Rubber crumb-reinforced cement concrete
AssigneeTiremix Corporation
InventorRichard Frankowski
Life of this patent
Estimating the term…
Abstract
Rubber crumb reinforced cement-concrete structures provide resistance to cracking, improve shock wave absorption, lower heat conductivity and improve the acoustical environment. The structures are comprised of cement-like materials having a predetermined proportion (from about 1% to about 30% by weight of cement) of recycled scrap rubber crumbs undirectionally aligned in the cross section of said structures.
Claims7
A concrete/rubber product made from a mixture comprising:
- (a) 100 parts by weight of portland cement;
- (b) 1-30 parts by weight of rubber crumb;
- (c) 40-70 parts by weight of water;
- and
- (d) 100-200 parts by weight of material from the group consisting of sand, aggregate, and light aggregate.
2 more elements
A concrete/rubber product made from a mixture comprising:
- (a) 100 parts by weight of a material from the group consisting of alumina and portland cement;
- (b) 15-30 parts by weight of rubber crumb;
- (c) 40-60 parts by weight of water;
- and
- (d) 100-200 parts by weight of light aggregate.
2 more elements
Dependencies are inferred from the claim text.