Resources

The technique of double-layered concrete or two-lift paving is applied either to obtain a high-quality top layer, to use lower quality materials in the lower lift, or for both reasons at the same time. In Europe this technique is commonly applied in Austria where a typical motorway is built with...

There is great potential to use the large open space of pavement structures, equipped with an embedded pipe network, in conjunction with a heat pump, to provide heating and cooling for adjacent buildings, e.g. airport terminals, shopping centres etc, here termed a Pavement Source Heat Pump (PSHP). Due to the...

Despite the considerable progress achieved by automakers and public policy efforts to promote '"soft" and "public" travel modes, the air quality of our streets can become critical at singular periods of the year, particularly for the more fragile populations. It is possible today to reduce the most harmful nitrogen oxides,...

In order to increase knowledge of how fuel consumption corresponds to pavement type, the Swedish National Road and Transport Research Institute (VTI) was commissioned to investigate the difference between asphalt and concrete pavement surfaces. Measurements were made north of Uppsala, Sweden; where a motorway section included both types of pavement....

The purpose of this study is to research the influence of fuel consumption of heavy-duty vehicle for concrete pavement and asphalt pavement respectively. It was decided to adopt a new approach for vehicle fuel consumption -- measurement of the running resistance of vehicles to investigate their rolling resistances due to...

Practicing engineers are under increasing pressure from pavement owners to become ?sustainable?. There are a myriad of publications, models and rating systems available that aim to assist them in this endeavor, in fact so many that they become overwhelmed. This paper provides practical guidance that includes definitions of the terminology,...

Pervious concrete pavement is a sustainable paving material that allows moisture to drain from the surface and naturally infiltrate into the subgrade. Pervious concrete pavement has been used consistently, with success, throughout the southern United States where freeze-thaw cycles are not common. Use of this valuable paving material in freeze-thaw...

Two-lift concrete pavement construction is not new, especially in Europe. In the United States it was used in the mid-1900’s but fell out of favor. This technology is one being considered by the Federal Highway Administration’s “Every Day Counts” initiative to implement innovations to the public. This paper discusses the...

Traffic noise, which is in fact the sum of tyre/road and engine noise, is one of the major disturbances for inhabitants. This has resulted in strict legislation with respect to maximum allowable noise levels at the facades of houses. Reducing traffic noise at the source by minimizing tyre/road noise can...

Work such as: buildings, roads, bridges, tunnels and slope coverings – amongst others, require great amounts of natural materials for their construction. The excessive use of these materials has caused diminishment of the sources that produce them. Additionally, reconstruction, keeping and improvement of works produce great amount of waste materials....

Today, less than 15% of the National Highway System in the United States is comprised of concrete pavement (FHWA, 2007). However, in 1956, at the beginning of the interstate era, the vast majority of primary US routes were concrete roads. Why this significant change in pavement type selected? This paper...

Concrete pavements are recycled for paving applications in at least 41 U.S. states and production of recycled concrete aggregate (RCA) in the U.S. currently averages about 140 million tons (127 million metric tons) per year. The primary application of RCA has been subbase materials, but it also has been used...