This paper summarises the results of a preliminary trial to validate a localised application of controlled induced cracking (active crack control, ACC) in continuously reinforced concrete pavements (CRCP) with local construction practices and conditions. ACC is currently being investigated in Europe. The work sought to gauge the merit of developing...
Continuously Reinforced Concrete Pavement Terminal Design
In rigid (concrete) pavement design and construction the word “terminal” is used to describe the termination of a concrete pavement abutting other “structures” such as a flexible pavement, a bridge abutment, or another concrete pavement where structural continuity is impractical or undesirable. A discontinuity in grade caused by the differential...
New Method of Paving Concrete Production
Modern concrete pavements are based on sophisticated blends of cements, often containing SCM, graded nonreactive aggregates and various admixtures, all of which are aimed at producing the most durable pavement possible. Placement techniques also incorporate the use of various curing compounds, which again are aimed at producing durable concrete. However,...
A designer’s perspective on unplanned shrinkage cracking in plain concrete road pavements
Unplanned shrinkage cracking in plain concrete pavements can be prevented by adequate jointing design, material selection and the use of good construction practice. This paper provides a series of notes on the construction challenges and design aspects that need to be considered to avoid unplanned cracking when constructing a new...
Geopolymer and High Volume Fly Ash Concrete for Pavements
Much interest has been shown in improving the sustainable performance of concrete. The use of cement replacement materials and geopolymer concrete offers benefits in terms of reduced carbon footprint and enhanced properties. This paper reviews the properties of geopolymer concrete and concrete with high levels of cement replacement materials relevant...
Use of recycled concrete aggregates in concrete pavements
The quality of the input of fine and coarse aggregates for concrete has an influence on the quality and consistency of the new concrete, and this is particularly applicable when recycled concrete aggregates (RCA) are incorporated in the concrete. The overseas literature indicates that where substitutions do not exceed 20%,...
Foreshore Road Port Botany NSW Australia’s First Slipformed Concrete Road Pavement A 37-Year Review
Slipform construction of concrete road pavements began in the USA in the late 1940s. It was introduced in Australia in 1978/79 and is now the preferred form of construction and used wherever practicable. Australia’s first slipformed concrete pavement, Foreshore Road at Botany Bay in Sydney, about 4km in length with...
The Role of Quality Assurance in Delivering Long-Life Concrete Pavements
The fundamental goal of any pavement design and construction project is to provide a pavement system that will survive the predicted traffic and environment for the pavement design life. Structural design is primarily considered as the way to meet that goal. Concrete mixtures and construction practices are generally assumed to...
Full Width Paving – Plain Concrete Pavement Holbrook Bypass Investigation
Conventional plain concrete paving method is to firstly pave the two travel lanes with a single longitudinal sawn induced tied joint, followed by a narrow nearside shoulder paving operation. Full Width Paving (FWP) is paving the whole 10.0 / 10.5m plain concrete pavement (PCP) carriageway width in a single pass...
Innovation allowing more paving time ….and less of everything else
Innovation Allowing More Paving Time....and less of everything elsePresented byJohn EisenhourNational Sales ManagerGuntert & Zimmerman How to be Successful at Concrete Paving Today You Must... Get it Smooth the First Time Get it Smooth the First Time Get in, Get Out and Stay Out! Get in, Get Out and Stay...
Use of Manufactured Sand in Concrete Pavement
Recent research by the Cement Concrete & Aggregates Australia (CCAA) focused on the selection of manufactured sands for general concrete applications and for concrete road pavements. Selected manufactured sands can be used as part of the fine aggregates to deliver workable concrete for general applications and to provide good skid...
Implications of Using Manufactured Fine Aggregates in Concrete Pavements
The International Center for Aggregates Research has been performing research on the use of manufactured fine aggregates (MFA) for over 15 years. The first issue was the high amounts of micro fines, i.e. minus 75 μmm, that typically exceed the amounts permitted by ASTM C33 in the production of concrete....