Highways

A major reduction in traffic congestion has been achieved in the Melbourne suburb of Heidelberg (11 km north-east of the CBD) with the recent opening of the Bell—Banksia link road. The $40m Federally- funded project reduces heavy through traffic on several local roads and will reduce road transport costs for...

The Adelaide City Council has recently made extensive use of concrete interlocking block paving in several projects. Landscape design principles were applied in the improvement of several inner-city, largely-residential streets where the aims were to improve their appearance and to make them safer for pedestrians. The two major projects were...

Until recently; the most common method of concrete pavement construction in Local-Government areas utilised steel or timber sideforms, and manually hauled vibrating screeds. This method continues to be ideal for many projects. Slipform road construction was introduced to Australia in 1979, but until 1983 its use was limited to major...

Over the period October 1990 to December 1992 the Roads and Traffic Au1hority (RTA) in NSW has comDleted the rehabilitation of about half a million sauare metres of the Pacific Highway. The work has been located within sections of the Highway from Bulahdelah to the Port Macauarie area. An integral...

Concrete is being increasingly used in the Sydney area to provide a sub-base for flexible road pavements. Typically, the pavement comprises 150 mm of plain concrete sub-base beneath a conventional roadbase and a surfacing of asphaltic concrete. Figure 2 shows the general form of pavement construction. The concrete sub-base provides...

SinceJ982, activities under the Australian Bicentennial Road Development Program (ABRD), in conjunction with works under other Commonwealth and Stale funding arrangements have become highly visible in up- grading the Australian road system to a high standard. In New South Wales and elsewhere concrete roads in varying configurations up to six-lane,...

The concrete Pavement in Victoria Parade is on the eastbound carriageway between Brunswick and Hoddle Streets in Collingwood, a distance of about 1.25 km. Within the overall alignment of this section of Victoria Parade there is a central reserve containing a tramway, while the westbound carriageway has a flexible pavement...

With an eye to future rehabilitation solutions, John Hodgkinson re-visited a CRCP overlay constructed on the Hume Highway, just north of Holbrook, in 1992. A significant milestone was reached in June 2021 as the first BCSA Rapid Set Concrete slab celebrated its 10th Birthday in Australia at Sydney International Airport. Since this...

Recent field observations on several newly constructed Continuously Reinforced Concrete Pavements (CRCP) in Belgium have indicated that the crack pattern is characterized as low mean crack spacing (approximately 1.0 m after 2 years in-service) along with a high percentage of clusters of closely spaced cracks. Besides, field surveys also indicate...

Concrete is used throughout the World every day in countless diverse applications but it is critically important in terms of performance and durability to understand why the mix design and placement need to be appropriately tailored to suit each application. The inimitable Geoff Ayton will explore what it takes to...

In addition to advances in materials and construction equipment there is a continuing need to ensure adequate skills are available within paving crews. Since 2006 concrete pavement crews and their supervisors in Australia have been required to undertake a mandatory one-day course. Known in industry as the “Grey Card” course...

Maturity testing of concrete, and applications for concrete pavements will be explored by Sabrina Garber from Transtec (USA). On a recent motorway project in Sydney roller compacted concrete was adopted as a working platform for pavement construction on local government roads. The successes and lessons learnt will be explored by...