Concrete is a suitable material for road pavements, both technically and economically. That holds especially for roads with high traffic intensity and heavy loads. Concrete roads have several technical advantages such as high wear resistance and load bearing capacity, good durability and a bright surface. In order to make concrete...
Optimisation Model for Functional Properties of Concrete Roads
Concrete By-Passes
Concrete pavements have been used in Germany mainly for federal motorways, airfields and industrial areas and less for state and provincial roads. By-passes have been constructed with asphalt pavements. In 2001/ 2002 a by-pass in the course of a federal trunk road was constructed with a concrete pavement for the...
Flexural Behavior of Beams Strengthened with Frp Composite Sheets
During recent years studies have reported the crises involving deficiency or deterioration of a considerable portion of the Nation infrastructure. Many concrete structures need repair and strengthening for several reasons, such as expired design life, changes in functionality, damage caused by mechanical actions and environmental effects, more stringent design requirements,...
Life Costing and Reliability Concepts in Concrete Pavement Design: the South African Approach
An empirical concrete pavement design method, based on mechanistic principles, was developed for use by the general practitioner. It was recognized that the outcome of the design process should not concern only layer characteristics and risk of failure, but also the area of pavement possibly afflicted by a particular mode...
Porous Concrete/ Laboratory Versus Field Experience
Porous concrete is used as top layer on highway roads to obtain noise reducing and permeable pavements. An extensive laboratory investigation has been executed to obtain an optimum mixture composition for the use as top layer on highway roads. This comprises a good resistance against heavy traffic, no rooting and...
Effect of Curing on Strength and Chloride Penetration into Concretes Made with Portland and Blast Furnace Slag Cements
In this paper, portland cement concretes and concretes with blast furnace slag cement were studied to determine the parameters for strength and chloride permeability under different curing procedures. For this purpose, four concrete mixtures were made at two different water cement ratios of 0.45 and 0.65 with cement contents of...
High-Volume Fly Ash Concrete for Concrete Pavements
This paper presents the data on the properties of fresh and hardened concrete made with replacement of the Portland cement by fly ash, from a thermal power plant in Turkey, up to large volumes (55%). The investigated parameters are water requirement for a given slump, air content, setting time of...
How Does the Micro and Macrotexture of Cement Concrete Pavement Affect the Skid Resistance of Road
The fast development of car technology has caused a steady increase in the speed of vehicles and increasingly higher demands on braking and traction. International studies show that every increase in average speed causes increase in personal injury accidents. Yet the present transport infrastructure in general and cement concrete pavement...
Inlay in Continuous Reinforced Concrete on the A10 Brussels – Oostende at Ternat
Between September and November 2002, an inlay in continuous reinforced concrete was constructed on the A10 motorway between Groot-Bijgaarden and Ternat. The main components of the section of road are concrete slabs that are overlaid with asphalt surfacing. The work was performed in the shortest possible period, during which the...
Dowels in Jointed Plain Concrete Pavements
The general type of concrete structures on German highways is the Jointed Plain Concrete Pavement (JPCP). Contraction joints are saw-cut with a standard spacing of 5,0 m perpendicular to road axis and sealed by a bitumen based or elastomeric joint filler. International experiences indicated clearly that faulting at undowelled transverse...
The Use of Continuously Reinforced Concrete Overlays in Motorway Maintenance (A Case Study)
How do you undertake the repair of a jointed concrete carriageway on one of the busiest motorways in Europe, particularly when a large proportion of the joints have failed and the slabs are floating on a sea of Gault Clay. With differential settlements so severe that there was genuine concern...
Types of Reinforced Concrete Railway Infrastructures and Essentials of their Computations
Reinforced concrete railway superstructure type (non-ballasted) is becoming more widespread and important in the world, similarly in Turkey. This type can be used both in all of the light rail systems of urban transport and also the high speed rail systems of intercity transport. Although its construction cost is higher,...