Design

On several of the concrete roads that were constructed in Sweden during the 1990s problems have been experienced in making the road marking compound adhere to the road surface. The problem would appear to be greatest during the first few years. In earlier studies, the problem was analysed by laboratory...

The technique of ultra-thin white topping, which has been used in the USA since the beginning of the 1990s, is characterised by a thickness of between 5 and 10 cm. They are characterised by a mesh of closely spaced joints in which the distance between the joints depends on the...

The state of the art of pavement recycling with cement in Spain is presented in this paper. The different reasons (technical, economical, and environmental) favouring this technique will be reported. Moreover, information will be provided on projects (traffic categories, material prescriptions and structural sections included in Spanish specifications), the construction...

In the present study, alkali silica reactivity (ASR) in airfield runways (pavements) is reported based on investigation of two US airports. The study includes in-field detection of ASR distress features followed by detailed laboratory investigation of cores collected from strategic locations. This two-tire approach was found to be most effective...

and safety levels for very many years. The Ministry of Transport, Infrastructure and Facilities of the Walloon Region conducted a comparative study of the motorway in 2000 between a continuously reinforced concrete pavement and a bituminous pavement. Very many factors obviously come into play for an objective comparison and they...

Development of new types concrete technology caused an increasing of concrete mixture production with a high proportion of fine filler in recent years. Fine filler is used to ensure required concrete mixture rheology qualities, which are needed to the concrete mixture storage into boarding. There are several materials can be...

Serviceability of the concretes that undergo such effects of repetition of freezing-thaw is greatly affected by water-cement ratio, permeability, composition of the cement and mineral additves. Water-cement ratio being between 0.40-0.50, the concrete having a structure without any voids, using a cement with mineral additives, increase the resistance of the...

The study was conducted to bring out the salient features of blended cements, which go a long way in establishing the durability of rigid pavements. Blended cements not only enhance the life cycle of concrete road by protecting it from chloride and sulfate attack but also reduce the thermal cracking,...

In Austria, concrete pavement construction has a tradition of several decades and the technology used is regarded as mature. Nonetheless, improvements are required on a continuous basis. The sharp increase in heavy traffic, higher emission levels, including in particular noise emissions, as well as economic considerations taking into account the...

motorway network in Belgium is now nearly complete, a large share of current road investment is allocated to the renovation of the oldest concrete pavement. Some asphalt roads are also being replaced with concrete, sometimes via the complete reconstruction of the road structure, sometimes by an inlay (of the slow...

In standard, commonly used, calculation methods for rigid pavement structures, the interaction between plate and subgrade is pressumed to be uniform. During pavement construction and its use different reasons can cause subgrade damage and loss of support between the plate and base (subgrade). Subgrade damage can be caused because of...

From the point of view of construction performances concrete qualities are well known, durability, high elasticity modulus and workability, for instance, stand for them among many others. But it is also well known that unfortunately, not all of its properties are on the positive side. Cracking, by a variety of...