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.