Resources

In recent years, exposed aggregate concrete has been used increasingly for the construction of the top surface of concrete pavement in Germany. Following placement, the fresh concrete surface is usually sprayed with a combination of a retarder and a curing agent (first curing). Depending on weather conditions and concrete composition,...

A mobile measurement system was used to quantify the relative importance for the road dust particle emissions on highways with concrete and stone mastic asphalt (SMA). Studded and non-studded winter tires were tested at 70, 90 and 110 km/h. The measurements were performed during October on dry, clean roads. Both...

One of the main problems faced by today's engineers is the lack of quality natural materials and accumulation of waste materials. Among the materials which are increasingly burdening landfills are industrial by-products. Slag is one of the common used industrial by-products and it can be used in all layers of...

One of the basic premises in any infrastructure project is the use of locally available materials in order to optimize resources. This criterion was adopted for the construction of the first section of RN 14 highway in Argentina. A concrete mix design was prepared in laboratory using a Siliceous River...

Photocatalytic cementitious road materials represent a new frontier in air quality improvement research, thanks to photocatalysts ability to accelerate natural reaction of oxidation, favouring the pollutants decay. This paper presents some findings that contribute to a better understanding of the effectiveness of photocatalytic road materials, evaluating the synergetic effect of...

The Ecoparc des Cettons is a sustainable business park. Designed to favour regional economic development and to boost employment in a loop of the Seine River 25 kilometres from Paris, authorities deliberately opted for an innovative approach complying with the environment including mainly: - the use of alternative techniques for...

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...

At present the choice of materials and techniques in road construction is dictated by structural requirements and economical aspects. Ecological factors have gained in importance due to environmental considerations in politics and society. To evaluate the environmental impact of motorways, a life cycle assessment (LCA) according to ISO 14040 was...

Due to the magnitude of the project, its characteristics, and the economic and cultural development of the region where it settles, the construction of the Rosario – Cordoba Highway represents an emblematic project of the road activity in Argentina. A singularity of this motorway is that it has been built...

The noise emission performance of concrete roads has been a subject of thorough investigations in Austria in recent years. This focus is due to the predominance of concrete road surfaces in the Austrian high-level road network and to the long and successful tradition of using exposed aggregate cement concrete (EACC)...

More and more importance is attached to the quality of the road surface, especially by the road users who want to drive on safe and comfortable roads. Concrete pavements often suffer from bad image due to the fact they are very old and have been designed according to other criteria...

The global warming of our planet has a special impact on urban areas, because large cities are characteristic for the development of so-called urban heat islands. This modification of the climate of a city in comparison to the climate of their hinterland is based on a multiplicity of factors like...