Roller compacted concrete has traditionally been used for pavements carrying heavy loads in low speed areas because of its relatively coarse surface texture. However, its use in commercial areas for local streets and highways has been increasing, especially within the United States. Even though Turkey is one of the main...
Surface Grinding Concrete Pavements
The report outlines some of the perceptions and issues associated with Concrete roads, and asks if the process of Diamond Grinding is a viable solution to the refurbishment of worn concrete pavements. The paper outlines the process of Diamond Grinding for reconditioning structurally sound but worn concrete surfaces. Gives a...
Pavement Type Selection What is the Ideal Process
Pavement type selection is often one of the more challenging and controversial decisions highway administrators face. The process involves weighing engineering factors such as materials, structural, and even long term performance against initial and life-cycle costs to help agencies decide between various pavement alternatives. Given the expenditure of significant public...
Data Analysis and Simulation of Rigid Pavement Test Item at the National Airport Pavement Test Facility
The Federal Aviation Administrations (FAA) National Airport Pavement Test Facility (NAPTF) conducts accelerated full-scale testing of airport pavements under controlled conditions. Construction Cycle 6 (CC6) was aimed at evaluating the effects of concrete strength and subbase materials. Two types of isolation joints were also tested for comparison. Data from embedded...
New Developments of Porous Concrete and First Experiences in Germany
Porous surfaces of cement concrete (OPB) or asphalt concrete (OPA) have a permanent transfer of rainwater and additionally noise reduction potential compared to the dense microstructure with exposed aggregates concrete. Pervious concrete test sections in the field of heavy-duty highways previously reported, however, do not have sufficient durability. Causes of...
Splitting Tensile Strength of Concrete Road Slabs – A Key Property for Load Capacity and Durability
Concrete pavements are continually subject to the effects of weather and traffic. These may cause tensile stresses at the top and bottom of the concrete road slabs. The resistance of the concrete slab to such effects depends on a large number of factors. In particular, the concrete tensile strength and...
Advancing the Use of Continuously Reinforced Concrete Pavement in the USA
The use of continuously reinforced concrete pavement (CRCP) is enjoying a renaissance in the United States (USA). CRCP has the potential to provide a long-term, zero-maintenance, service life under heavy traffic loadings and challenging environmental conditions, provided proper design and quality construction practices are utilized. In the USA, the Federal...
Optimization of the Recycling of Concrete in Concrete Application to an Airport Slab
The use of demolished concrete as recycled aggregate in new concrete is a promising solution within the context of sustainable development. However, this application is still limited in the construction sector due to the lack of knowledge. In that context, Ifsttar (France) and the French industry's major players have finished...
The New Balastless Track Project from Idea to 1km Prototype
Within the frame of a French collaborative research program started in 2007, private companies, a public research laboratory and a rail network owner have jointly developed a new ballastless track structure (NBT) based on independent concrete slabs. This structure is dedicated to both very high speed operations and mixed passenger/freight...
Performance Engineered Mixtures for Concrete Pavements in the US
Many concrete pavement mixtures in the US are proportioned based on recipes that have been used before, or on prescriptive specifications. As budgets grow tighter and increasing attention is being paid to sustainability metrics, greater attention is beginning to be focused on making mixtures that are more efficient in their...
The Role of Quality Assurance in Delivering LongLife Concrete Pavements
The fundamental goal behind any pavement design and construction project is to provide a system that will survive the predicted traffic and environment for the selected lifetime. Considerable effort is paid to the structural design of a pavement in order to reach that goal. On the other hand, the concrete...
Precast Concrete Pavement Innovations, Performance and Best Practices
The precast concrete pavement (PCP) technology is gaining wider acceptance in the US for rapid repair and rehabilitation of concrete pavements as well as for heavily trafficked asphalt concrete intersections. Although the US PCP technology is of recent origin, with projects less than about 12 years old, many projects have...