The use of high performance concrete (HPC) is becoming more popular in the United States. Many State Departments of Transportation are replacing conventional concrete especially with HPC bridge decks. Despite the growing popularity of the material, little is known on the effect of the available curing methods on the mechanical...
Road Marking on Concrete Roads
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...
Continuously Reinforced Concrete Roadbases
In the Netherlands Rijkswaterstaat is the authority in charge among others of the construction of highways. The department Noord Holland of Rijkswaterstaat has chosen a continuously reinforced concrete roadbase for the construction of the 9 km long new highway section between the cities of Haarlem and Hoofddorp. This choise was...
Rapid Replacement of Deteriorated Concrete Slabs Under Traffic
In the course of utilization the utility value and condition of concrete pavements decreases due to traffic and environmental burden. Their utility value is judged by edge/corner demolitions, settlements, horizontal movements and the overall condition. In case of damage individual slabs must be replaced. The aim of this study is...
Economic Comparison Between Concrete and Conventional Road Pavements in France
A comparison of "capital plus maintenance" costs has been made in France using the following methodology: - firstly, a comparison of sections of concrete pavement with conventionally constructed ones of the same age on the same stretch of road, - secondly, a statistical analysis of the performance of the different...
Experimental and Theoretical Investigations on Concrete Pavements Under Critical Loadings
Experimental and theoretical investigations on deformations and stresses in concrete pavements subjected to realistic weathering conditions have been carried out. On large-size concrete slabs critical hygral and thermal loadings with boundary conditions corresponding to different field situations were simulated. The results of the experiments served to calibrate and to verify...
The Importance of High Range Water-Reducers in Concrete Quality
This paper is based on a research project, which has covered the importance of high range water-reducers (HRWR) on properties and consequently on quality of concrete. More precisely deals with the influence of six HRWR of an amount of twelve which were tested. They have been prepared concrete mixes with...
Prefabricated Concrete in the Service of Urban Development
The needs of road managers cover a number of sometimes conflicting aspects, which have to be reconciled. These relate to the durability of the works, their flexibility of use and reuse, their ease of maintenance and of course their long term cost. They also relate to the safety of the...
Imprinted Concrete Installations in Brussels
Over the past years, consideration was given to the damage some streets were exhibiting which had been constructed from porphyre cobblestones paving or concrete block paving. The director of the street accomodation for the region of Brussels took the decision to replace those damaged areas with an Imprinted Concrete Paving...
Concrete Pavements on Bridges and in Tunnels
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...
Modieslab Innovative Prefabricated Modular Concrete Slab For Concrete Roads and Airfields
The Dutch Federal Highway Administration introduced the project Roads to the Future in the year 2000. Amongst other innovations, the MODULAR ROAD, was one of the sub-projects. In a contest several parties in the roudbuilding business were asked to develop an idea for a modular type of road that had...
The Structural Properties of Optimised Exposed Aggregate Concrete in the Netherlands
Indicative research on three new types of concrete roads by the Dutch Association of the Netherlands Cement Industry (VNC) in 1993 had shown that a concrete surface of exposed aggregates could be further optimised with respect to traffic noise reduction. In 1996, the Dutch Information and Technology Centre for Transport...