Materials

The study was conducted to bring out the salient features of blended cements, which go a long way in establishing the durability of rigid pavements. Blended cements not only enhance the life cycle of concrete road by protecting it from chloride and sulfate attack but also reduce the thermal cracking,...

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 aim of this research is to improve the properties of the soil by using phosphogypsum with cement stabilizing agent.Phosphogypsum and cement were used with the locally available soils in different portions and Atterberg limits, maximum dry density, optimum moisture content and unconfined compressive strength test were determined. It was...

The property of abrasion resistance is the ability of a material to resist mechanical abrasion. This paper deals with different test methods, especially road wear simulators, requirements and influencing factors for wearresistant road surfacing concrete. The average annual daily traffic (ADT) adjusted for the proportion of traffic with studded tyres,...

After the exploration of damages caused by alkali-silica reaction (ASR) on highway bridges in Turkey recently, the usage of reactive aggregate on highway construction was prohibited. However, this does not seem to be the proper solution, because natural aggregate leads to an increase in workability of concrete due to its...

In standard, commonly used, calculation methods for rigid pavement structures, the interaction between plate and subgrade is pressumed to be uniform. During pavement construction and its use different reasons can cause subgrade damage and loss of support between the plate and base (subgrade). Subgrade damage can be caused because of...

The recently developed porous concrete techniques have been tried to apply to not only full-depth concrete pavements for new roads, but also thin bonded concrete overlay for rehabilitation works in Japan. This paper shows their performances as well as their designs and constructions.

In 1999 - in the province of Noord-Brabant in the Netherlands - an eighteen-year-old asphalt road with a cementstabilised fly-ash road-base, appeared to be in bad condition. Further investigation showed that the base was almost completely disintegrated, probably due to bad drainage and due to a possibly low cement content....

Traffic-noise pollution has become an issue for many road authorities. Applying measures at the source i.e. interaction surface and wheel are an effective noise abatement measure and many quiet surfaces have been developed in the last decade. A relative silent surfacing is a concrete surface of exposed aggregates. The Dutch...

A new, reproducible test method for curing compounds has been devised. This method is based on concrete made using 400 kg/m³ of cement and 0/8 granulates. Eight different curing compounds were tested. A linear relation was found between effectiveness after 7 days at 35°C and 40% RH and relative compressive...

The surface (texture) of a concrete pavement has to endure the effects of traffic and the environmental load. At the Technical University of Munich, Institute for Materials and Structures the real stress from solvent, freezethaw and mechanical loads will be simulated in the laboratory as close as possible to practice...

This paper presents a new generation of cementitious material devoted to pavement bedding layer construction and named MACES. This material contains a high volume of water in order to be very fluid and selfcompacting. It has also been designed in such a way that the free water in excess rapidly...