High Performance Concrete for Australian Freeways

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Title: High Performance Concrete for Australian Freeways

Author(s): Alex Leshchinsky and John Pattison

Publication: Concrete International

Volume: 16

Issue: 10

Appears on pages(s): 45-48

Keywords: compacting; compressive strength; specifications; continuously reinforced pavements; high-performance concrete; mix proportioning; Construction

DOI:

Date: 10/1/1994

Abstract:
The continuously reinforced concrete pavement of the Lapstone Extension to the M4 Motorway was constructed by placing a 150-mm (6-in.)-thick, 5 MPa (725 psi), lean-mix sub-base overlaid with a 200-mm (8-in.)-thick, 32 MPa (4600 psi), reinforced concrete base. The project extended the existing four-lane divided freeway, eliminating a winding, two-lane undivided road in the foothills of the mountains west of Sydney, Australia. In November and December of 1992, 10,000 m 3 (13,000 yd 3) of concrete was placed.




  


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