During the 1999 spring, two sections of ultra-thin whitetopping (UTW) were built in an urban street at a bus stop within the University of São Paulo campus, over a thin 45 mm asphalt layer. The UTW was constructed, defining two square panels of 0.6 and 1.0 m in size and...
Precast Concrete Pavement for Intermittent Concrete Pavement Repair Applications
Precast pavement technology is a recently improved construction method that can be used to meet the need for rapid pavement repair and construction. Precast pavement systems are fabricated or assembled off-site, transported to the project site, and installed on a prepared foundation (existing pavement or re-graded foundation). The system components...
Non-Reinforced Concrete Pavements for Heavy-Load Service
Usually pavements for heavy load service are constructed with double reinforced concrete. Mostly their thickness is about 40 cm and beside the high costs there are structural problems with the placing and the design of joints, if unwanted cracks and steel corrosion should be avoided. In addi-tion to...
Cement Treated Base with Recycled Aggregates Coming from C&D Wastes
? The behaviour of the cement treated bases was more performant than the "foreseen one for the effective" regulatory scheme, while the one of the ballast was adjusted to this forecast. ? The behaviour of the materials with recycled aggregates was similar to the natural ones regarding their measurements achieved...
Technical Prescriptions for Concrete Pavements by the Spanish Ministry of Development
Prescriptions for concrete pavements issued by the Spanish Road Administration are included in two types of documents: the Standard for Structural Sections of Pavements (6.1 IC) and the Specifications for Road and Bridge Works (PG 3). These documents were updated considering the latest advances in materials, construction processes and...
Competition and Its Role in Pavement Type Selection in the US
Today, less than 15% of the National Highway System in the United States is comprised of concrete pavement (FHWA, 2007). However, in 1956, at the beginning of the interstate era, the vast majority of primary US routes were concrete roads. Why this significant change in pavement type selected? This paper...
Finely Graded Surface Concrete (FGSC) a Sustainable Solution for Exposed-Aggregate Concrete
As a general feedback of most studies and site experiments, the lower the maximum size of aggregate, the lower the rolling noise for exposed aggregate concrete roads. Yet, a small size of aggregate increases the cement demand, and by the way the unit cost of concrete. This is a supplementary...
Fast Track Concrete for Repairs in a Continuously Reinforced Concrete Pavement in Spain
A continuously reinforced concrete pavement (CRCP) was opened to traffic in 1976 in the North of Spain. It is located in a 43 km long motorway. Each carriageway is 12,00 m wide (concrete pavement is 8.00 m wide). The top layer is a 22 cm thick CRCP. Longitudinal reinforcement consists...
Experiences in Local Concrete Road Construction in Poland
Polish Cement Association has been promoting roads with concrete pavement for ten-odd years. Providing local authorities with information on advantages of the concrete local roads is a very important field of action. Consistent organisation of conferences and seminars, publication of books and brochures have given measurable effects. In the past...
Mix Designs Targeting Concrete Flexural Strength and Modulus for Airfield Concrete Pavements
The Federal Aviation Administrations (FAA) National Airport Pavement Test Facility (NAPTF) is located at the William J. Hughes Technical Center, Atlantic City International Airport, New Jersey. The primary objective of the tests performed at the NAPTF is to generate full-scale pavement performance and response data for development and verification of...
Increase of Safety of Concrete Pavements Bright Concrete Pavements with Dark Aggregates #2
The method of constructing bright concrete Pavements with dark aggregates presents a variety of advantages; an essential benefit is the brightness of concrete pavements compared to bituminous pavements, because brighter street surfaces affect positively the safety of the road users. Above all, bright concrete surfaces provide an increase in safety...
Spanish Experience in the Design of Long-Life Pavements
As an example of Spanish experience in the design of long-life pavements, this paper is going to examine the above-mentioned construction project for a stretch of motorway with a pavement of exposed aggregateexposed aggregate concrete. The cross-section of the pavement comprises: - 23 cm of HF 4.5 (concrete with a...