Resources

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...

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 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...

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...

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...

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...

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...

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...

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...

The intention of this paper is to shed light on the interaction between road roughness and the resulting road damage caused by static and dynamic wheel forces. For this purpose several trucks have been mathematically modeled as multi-body systems in great detail. The models are based on actual data of...

Alstom who is a major company in the turnkey railways construction activity including railways track construction, developed an adaptation of roads and highways calculation modelization based on concrete fatigue resistance under traffic loads to for railways tracks calculation purpose. Roads and highways have a long and rich experience and data...

The porous concrete surface and sub-base for pavements is required higher coefficient of permeability than 0.01cm/sec and higher bending strength than 3 or 4.5 N/mm2. In order to obtain workability and these qualities, suitable methods for testing consistency was investigated. It was possible to judge the consistency for quality control...