Road structure – process – or apparatus – Pavement – Including bed
Reexamination Certificate
2006-02-28
2006-02-28
Hartmann, Gary S. (Department: 3671)
Road structure, process, or apparatus
Pavement
Including bed
Reexamination Certificate
active
07004673
ABSTRACT:
Asphalt concrete pavement consisting of an asphalt surface course, concrete subbase of specified compressive strength fc′and modulus of rupture up to 5,000 and 750 psi, respectively, with small grains crushed limestone finer than 9.5 mm as a coarse aggregate, and a layer of granular material between the surface course and concrete subbase is considered as a semi-rigid pavement. Rigidity of this composite structure is provided by the concrete subbase whereas its flexibility is provided by the asphalt surface course resting on the layer of granular material.
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Thickness Design for Concrete Highway and Street Pavements, Portland Cement Association, pp. 5, 36-38, undated.
Hartmann Gary S.
Smith Robert C.
Wagner John F.
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