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...
Deriving California-Type Profilograph Outputs from Rsp Roughness Measurements
The roughness specifications of a recent Israeli PWD concrete road project, consisting of a 4-lanes stretch of a 7- kilometer length (Route No.3), included both bonuses and penalties in their pay-adjustment functions. The California-type profilograph outputs served as the data for these functions. The reason for using this particular profile...
Reporting ASR in US Airfield Runways
In the present study, alkali silica reactivity (ASR) in airfield runways (pavements) is reported based on investigation of two US airports. The study includes in-field detection of ASR distress features followed by detailed laboratory investigation of cores collected from strategic locations. This two-tire approach was found to be most effective...
Economic Models as Basis For Investment Decisions
There is a trend to work with the influence of roads on the whole society. The quality level, and the initial investment cost, for pavements and road superstructures, should therefore be grounded on Life Cycle Cost analysis (LCC). LCC or Whole Life Costing (WLC), is described in a PIARC document...
Efficiency of Curing Compounds A New Test Method
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...