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Composite pavement for highways, streets and airports with enriched limestone quarry waste as a coarse aggregate for the concrete of the subbase   

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Abstract: Composite concrete pavement includes a surface course of normal concrete and a subbase or lower layer of concrete with coarse aggregate defined as enriched limestone waste of grading intermediate between coarse and fine aggregates. Coarse aggregate of this concrete is an enriched by-product of the manufacture of crushed limestone of regular sizes. As a raw material for enrichment, it should be finer than 9.5 mm. the amount of aggregate finer than 4.75 mm as a part of the total weight of aggregate should be not less than ½ before enrichment and close to, but not exceeding, ⅔ in the aggregate bin. Specified compressive strength and modulus of rupture of this concrete are up to 5,000 psi and 750 psi, respectively. ...

Agent: Naum Sapozhnikov - Los Angeles, CA, US
Inventor: Naum Sapozhnikov
USPTO Applicaton #: #20070116517 - Class: 404017000 (USPTO) - 05/24/07 - Class 404 

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Related Patent Categories: Road Structure, Process, Or Apparatus, Pavement
The Patent Description & Claims data below is from USPTO Patent Application 20070116517, Composite pavement for highways, streets and airports with enriched limestone quarry waste as a coarse aggregate for the concrete of the subbase.

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