Quality a.curance and functional demands are taken more and more into account in contracts for road construction. This paper describes a contract for a 15 km long concrete pavement for a motorway in West Sweden. Functional demands were chosen for wear resistance, evenness, tensile strength, thickness, frost resistance, surface friction,...
Experiments with Concrete Pavements on the LCPC Fatigue Test Track
In France, the Highway Department, the concrete pavement contracting companies and the lime and cement industries represented by their national associations, initiated in 1991 a major experiment on the pavement fatigue test track of the Laboratoire Central des Ponts et Chaussées (LCPC). The objective of these full-scale tests was to...
Improvement of the Adherence between Old and New Concrete in Road Construction – Procedures and Testing Methods
The mechanical adherence properties of new concrete bound with old concrete surfaces which had been pretreated in a conventional manner as well as with new techniques, have been studied uding fracture mechanical methods. It was shown that far better adherences are achieved with specially structured old concrete surfaces than with...
Stabilization of Contaminated Soils
The elution behaviour of acid and alkaline soils, contaminated with diesel oil, PER and mercury salt, of different grading curves (sandy loam to loam-free fine gravel), was examined both before and after stabilization with cement. After cement stabilization, all heavily contaminated soils (eluate class Ill) yielded an eluate that corresponded...
Urban and Pen-Urban Porous Pavements
The control of disturbances (noise, flooding, runoff water pollution, etc.) nowadays constitutes a major preoccupation of local populations. The roadway, in the diversity of the functions it performs in the urban and pen-urban scctor, can contnibutc activcly to the control of such disturbances. Porous pavements constitute a valuable area of...
The Implementation of RCC Pavements in Colombia
Colombia is a developing country with enormous difficulties for the implementation of new technologies due to their introduction costs and the positioning of existing ones. Despite the constant academic efforts to keep it alive, the construction of concrete pavements has been asleep for years as a consequence of the obsolescence...
Experiences with the Treatment of some Defects of a Concrete Pavement during Construction
The aim of this paper is to discuss some defects of the concrete pavement during the construction of the second northern expressway project in Taiwan. The possible reasons of and techniques for repairing these defects are studied in the paper. The defects discussed include the cracks in the lean concrete...
Temperature Effects on the Concrete Pavement of the Marco Polo Airport of Venice
This paper examines the results of temperature and strain measurements obtained using strain gauges installed in the concrete pavement of the aircraft parking area of the "Marco Polo" international airport of Venice. The purpose was to control the design assumptions and models and to assess the long term behaviour of...
Noise Reduction on Concrete Paving Blocks
Today the people in the cities require, more than in former times, a nice looking but also noice reduced pavement. The aim of our one year trial in 1 9w92h,i ch was promoted by the Austrian innovation fund, was to fulfill the requirements mentioned above. 1200 m of new concrete...
Bidding Procedure, Contract Award and Construction of the Motorway Al 5 between Cottbus-West and Forst (Germany)
The turnkey construction method can be very beneficial to an employer both during the bidding process and during construction. A turnkey road construction project was selected for the first time in Germany as the construction method for the A15 motorway between Cottbus-West and Forst. In order to alleviate backups within...
Further Improvement of the Durability of Concrete Pavements by using Higher Strengths
Road concrete in the thirties did not have a particularly high strength, but it grew over the years. Strength tests on cores, taken last year, show that the strength -compressive as well as the more important splitting tensile- of the old section and also of almost all new ones is...
Thin Steel Fiber Reinforced Concrete Overlays and Inlays
Between 1982 aiid 1989, 8 thin overlay test sections were constructed with a total surface area of 129.000 m2 . The relevant research project is carried out with a view to the necessary future renovation of part of the Belgium road network. All sections were built with 10 to 12...