The experiment presented here has been carried out within the context of a partnership research contract signed between the Road Directorate (French Ministry of Civil Equipment) and the GTM Construction Company. The autors are thanking both partners, and the following organizations or companies, which contributed with equal success to the...
High Performance Porous Concrete for Heavy Traffic Ring Road of Segovia Town
The properties of High performance Porous Concrete (HPPC) paving may be described as a midpoint between flexible and rigid paving. The result of many years of research, especially as regards the materials used, we suggest this is an ideal solution to the problems currently experienced with pavements of a porous...
Environmental Impact of Concrete and Asphalt Pavements
As part of a Nordic R & D project on sustainable concrete technology initiated by the Nordic cement industry, a study has been carried out by VTT, the Technical Research Centre of Finland, to assess the environmental impact of concrete and asphalt pavements. The assessment is based on the estimation...
High-Quality Concrete with Recycled Aggregates
New laboratory and field investigations showed that it is possible to achieve durable concrete by using recycled aggregate above 4 mm from old pavements with cracks but no frost- or concrete structure deterioration. The concrete compressive and tensile strengths were slightly higher and the cracking sensitivity was slightly lower for...
First Experience of Noise-Reducing Exposed Small Aggregate Concrete Surfaces in Japan
In Nagoya, Japan, for a national highway having a large-scale common duct set under the road, concrete pavement with transverse brooming has been adopted in order to ensure structurally durable pavements. However, because these roads are located in an urban area, demand for less noisy pavements has increased. Therefore, in...
Properties of Porous Concrete with High Strength
In recent years in Japan, permeable asphalt pavement, with its efficient drainage and reduced tire/road noise, has seen increasing use because permits safer driving and does not create environmental problems. For this study, inorganic materials were used to make porous concrete suitable for roadway use, without the addition of polymers....
Determination of the Friction Coefficient and Thickness of the Macrotexture in the Runway of Ushaia’s International Airport
The air operation in Ushuaia is of such difficulty that landing in the runway of the old Sea and air Base at Ushuaia was considered quite a challenge by the pilots that operated there. Several accidents occurred, amongst them one that destroyed a Boeing B-737 and another in which a...
High Performance Porous Concrete for Road Traffic
This report details the construction of a 300 m long experimental section of road for heavy traffic in Villamayor, Salamanca, Spain, using "high performance porous concrete" (HPPC). HPPC is made with the same materials as conventional compact concrete (Ccc), i.e. cement (two types have been used for this project), coarse...
Mechanical Properties and Structure of Porous Concrete
A test road with 40 n-mi porous concrete top layer on a 180 mm thick continuously reinforced concrete pavement has been constructed in May 1996 in Belgium following the wet-in-wet method. A preliminary test program was conducted at the Catholic University of Leuven to reveal the influence of different polymer...
Reconstruction of Concrete Roads Using Recycled Sand as Aggregate
In the domain of road building, recycled aggregate made from old concrete road pavings has been used in the construction of new concrete pavings for quite some time. Generally only the coarse fractions of more than 4 or 2 mm, respectively, are used as recycled material. Most of the recycled...
Multifunction Concrete Roadways Potericitls in Urban Areas
Combating noise, disturbances and safety hazards on transport infrastructures is one of the leading preoccupations indicated by 85 % of city dwellers in industrialised countries. The road concrete industry has fully realised this real challenge for durable building and maintenance of concrete roads capable of controlling disturbances caused by urban...
Draining Concrete – the Material for Today’s and Tomorrow’s Roaris, Quiet – Safe – Environment-Friendly – Production – Characteristics – Application
With the development of draining concrete as a super whispering surface, the German Cement Industry has signalled a new era for the concrete structure. This special draining concrete is a so-called like-grained concrete with a cavity content of 20 - 25 vol.-%. The individual aggregate grains are cemented with a...