Surface Characteristics of Two Recently Constructed Trunk Roads in the UK

Highways Members Only

In an effort to tackle road traffic noise, research into quieter road surfaces has included trials of a new type of concrete surfacing called exposed aggregate concrete, which has been used in a number of other European countries. Two trials of exposed aggregate concrete have been constructed in the UK;...

The Use of Crushed Concrete Aggregate in Concrete for An Industrial Road at Ouffet

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In standard specifications 300 of 1994 (CCT 300) issued by the Ministry of the Walloon Region, permission is granted in the chapter dealing with cement concrete surfaces of roads belonging to roads with light traffic, to replace a maximum of 50 % of the granulates with crushed stones. The aim...

Concrete Pavements of the Macau International Airport

Airports Members Only

This paper describes design solutions of the concrete pavements from Macau International Airport, including runway, taxiways and apron. Aspects about the execution and results from quality control are also presented, within the scope of activities made by LECM (Macau Civil Engineering Laboratory) in this project, as a quality assurance agent...

Fatigue Properties of Plain Concrete

Highways Members Only

Based on a literature search, several types of fatigue relationships were collected, compared and analysed for plain concrete (specimens, pavements) subjected to repeated loading. A uniform fatigue relation - based on the FS- R concept - has been proposed for the flexural tensile strength. The 50%-probability curves have been analytically...

Fibrous Ferrocement – An Ideal Material for Bridge Overlays

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The overlays of highway bridges are usually subjected to stresses like impact stresses, longitudinal stresses, due to the application of brakes and wear and tear stresses. The moving loads on bridges have a jumping action due to uneven surface on which they move. This jumping causes shocks and vibrations of...

Air-Entraining Agents in Road Concrete Code of Good Practice and Field Experiments

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Air-entraining agents are increasingly recommended as a mean to counteract the ever more severe deterioration of road cement concretes in winter. However, their use is still raising problems as far as the specifications and the practical implementation of the technology are concerned. The results of research conducted by BRRC and...

The Study of Mean Time Drying Shrinkage Behavior of Steel Fiber Reinforced Concrete Pavements

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Concrete structures shrink when they are subjected to a drying environment. If this shrinkage is restrained, then tensile stress develop and concrete may crack. This shrinkage is a major concern for concrete structures especially for wall, slab and pavements. One of the methods to reduce the adverse effects of shrinkage...

Fiber-Reinforced Roller-Compacted Cement Concrete (Rollfiber) for Continuous Concrete Pavements

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The ROLLFIBER process consists of roller-compacted cement concrete reinforced with steel fibers. It enables you to build continuous pavements without any joints. To reach this level of performance, the fiber has to have what is known as total' anchorage, and its action is optimized by the use of a concrete...

Mechanistic Evaluation of Spalling Distress

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In this paper, delamination formation is investigated. Stresses due to temperature and moisture variation are considered within the scope of the formation of the delamination. Tensile and shear stresses are determined numerically based on finite element analysis using simulated pavement moisture data. A finite element program is developed to allow...

Concrete Pavements for Heavy Traffic Areas

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The space available on our roads is becoming less and less. All forecasts agree that the increase in traffic will also cotiliiiue to grow considerably in the years before us. At the same time, because of the changes in political conditions in Europe and the opening of the frontiers, there...

Development of Cement Treated Asphalt Mixtures for Pavement Rehabilitation

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Cement treated asphalt mixtures (CTAM), which are composed of an asphalt mixture and cement milk injected into voids of the asphalt mixture, were studied for use as a fast overlay material for airport pavements. The cement milk must have adequate fluidity for about 30 minutes and must develop a flexural...

Elimination of Ruts at Intersections by Means of An Inlay/Overlay Made of Steel Fibre Concrete

Highways Members Only

To the North of Gent there is an important harbour and industrial zone. Because of the heavy traffic on the road connecting Gent and Zelzate (R4, section J. Kennedylaan), deep ruts have formed in the asphalt pavement, mainly at the junctions. In order to repair these ruts in a durable...