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...
Surface Grinding Concrete Pavements
Quality and Optimal Grading of Sand for Optimal Performances of Concrete Pavements
The quality of sand influences in every way the quality of concrete and affects, among others, the workability, the durability as well as the mechanical strength of concrete. It is acknowledged that a sand of good quality to be used in concrete pavements must contain few fine grains and be...
Influence of Recycled Concrete Aggregates on Strength Properties of Concrete
The demand to use recycled aggregates in concrete is getting more important. However, to obtain a sustainable road, it is necessary to construct durable pavements and therefore to use concrete of good and reliable quality. The use of recycled aggregates will give environmental advantages but could lead to excessive shrinkage...
Restrained Shrinkage Cracking of Continuously Reinforced Self-Consolidating Concrete Roads
Continuously Reinforced Concrete Pavements (CRCP) are designed in such a way that the longitudinal reinforcement limits the widths of the transverse cracks in the pavement in order to prevent the water, chemicals and deicing salts from penetrating into the pavement. Self-Consolidating Concrete (SCC) is a new and innovative concrete type,...
Building Concrete Roundabouts in Switzerland
Since 2003, roundabouts in Switzerland have been built with concrete carriageways. Because space is at a premium due to the population density, the diameter of most roundabouts is less than 30 m. Roundabout carriageways with small diameters are subject to particularly high shear stress levels, which is why the choice...
Impacts of the Longitudinal Joint Location on Slab Stresses
Longitudinal joints in concrete pavements historically have been located along the edges of lane lines, a condition that results in applied loads being located at the most critical points (e.g., edges and corners of slabs). With increasing use of light?colored silicone sealants that contrast less with the concrete surface color,...
Skid Resistance-Improvement Measures on Concrete Roads in Austrian Road Tunnels
The results of the investigation concerning the loss of skid resistance on Austrian tunnel roads are presented in this poster as well as the results of trials to improve the skid resistance level in the laboratory. Best results were achieved through cleaning the road surface in the tunnel with tailor...
Roller Compacted Concrete Pavements for the Urban Environment Turkish Experience
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...
Early and Late Age Shrinkage of Concrete in Industrial Floors Design
For proper joint design, slabs size and slab thickness of concrete industrial floors, as well as other structures, it is necessary not only to know the final shrinkage of the concrete, but also the evolution over time for both long term and early shrinkage, and the relationship between these properties...
Urban Concrete Pavements History and Current Technology
This paper aims to outline briefly the history of the first concrete pavements in Europe and in the United States. The authors will present examples of concrete pavements built in Tarnów, a relatively large city (115,000 inhabitants) in southern Poland. They will show technological and structural solutions for using concrete...
Thinking Outside the Box with Roller Compacted Concrete Pavement
Roller compacted concrete (RCC) pavement has been used for decades in situations where repetitive heavy loads are applied and for large paved areas. These applications have included logging yards, ports, automobile manufacturing plants, and warehouse districts among other places. While these are appropriate applications for RCC pavement, there are many...
Skid Resistance Properties of Concrete Pavement Surfaces in Tunnels
Skid resistance properties of concrete pavement surfaces in tunnels are measured with the dynamic measuring device TRT on a regular basis in the Czech Republic. Measurements are usually carried out before and after putting the tunnel into operation and then approximately once a year; the skid resistance is also measured...