The use of screenings of igneous rocks containing the dust-like particles (not more than 10% by weight) extends the list of efficient aggregates for the pavement concretes. The peculiarities of the grain size distribution of screenings, namely, an increased content (up to 10% and over) of dust-like particles and specific...
Geotechnical Properties of Cement Stabilized Class-F Fly Ash
The geotechnical properties of cement added class-F fly ash have been investigated to assess the potential utilization of stabilized fly ash as embankment material. The engineering properties of the cement stabilized class-F fly ash studied include the compaction, strength characteristics and the durability as measured by wetting and drying tests....
Life Cycle Assessment (LCA) of a Concrete Highway
The environmental performance of a Swedish concrete highway was analysed by use of Life Cycle Assessment (LCA). As a base, a similar study carried out in Finland was used [1, 2]. The system investigated include extraction of raw materials up to the user phase (traffic and lighting). The intention of...
Renewal of Concrete Slabs Using High Performance Concrete
The considerable increase of road traffic all over the world increases the demand for traffic surfaces with a longer lifespan and less repairs. When doing maintenance and repair works it is very important to keep short construction times in order to reduce obstruction to traffic to meet this challenge. A...
A New Rigid Pavement Constructive Method Using Hexagonals Slabs
This paper describes a new rigid pavement constructive method employing hexagonals slabs, being the angle betwen the edges of the slabs at each corner, 120 degrees. This paper is based on the one titled ´´ NEW JOINTS IN RIGID PAVEMENT - HIGHWAY AND AIRPORT´´, of the 8th International Symposium on...
Ultra Fast Track Concrete Paving Recent Belgian Research and Applications
In Belgium, most of the actual road works deal with rehabilitation, maintenance and repair. For the Road and Traffic Administrations, the limitation of the traffic disturbance is one of the major challenges. Thanks to the technique of rapidly hardening concrete, known as fast-track concrete paving, cement concrete pavements are repaired...
Types of Reinforced Concrete Railway Infrastructures and Essentials of their Computations
Reinforced concrete railway superstructure type (non-ballasted) is becoming more widespread and important in the world, similarly in Turkey. This type can be used both in all of the light rail systems of urban transport and also the high speed rail systems of intercity transport. Although its construction cost is higher,...
The Belgian Certification System For Materials For Concrete Pavements in the Context of the European Community
The goal of the BENOR certification scheme was to guarantee the manufacturing of high quality concrete and the building of better concrete roads and accessories with a lower cost. This was achieved by establishing a certification scheme based on the will of all the actors involved in the building process,...
Compressive Strength of Roller Compacted Concrete Containing a Non-Standard High Calcium Fly Ash
Although roller compacted concrete (RCC) made with and without fly ash (FA) has enjoyed numerous application of dams, roads and large floors construction in Europe, Japan, Australia and Unites States since 1970s, it has not almost yet been used at all in Turkey despite abundant and economical sources of FA...
Use of Taguchi Optimization Technique in Pavement Concrete Mix Design
In a concrete mix design, there are many mix variables affecting the concrete performance. If all the mix variables are taken into account, it may be necessary to use the full factorial design of experiment to obtain the concrete in the desired mechanical properties. It means more need of material,...
Concrete Roads and Road Lighting Design
Knowledge about pavement reflection properties is needed in order to design a road lighting installation. CIE (International Commission on Illumination) has created a method for describing the reflection properties of a dry surface in terms of the pavement brightness and degree of specularity. From here, CIE has created a classification...
the Influence of the Curing Method on Early Cracking Risk During Hot Weather Paving
Concrete pavements which are placed during hot summer weather conditions, harden on the top side, due to the solar radiation, at higher temperatures, as is the case for the bottom side. As soon as the concrete cools down at the top side during the first night, the concrete pavement tends...