Interest in concrete roads has increased in Sweden in recent years. Contributory factors are the increased traffic loadings, which demand more rigid types of pavements, and the excellent resistance of concrete roads to wear from studded tyres. This conference paper describes the pavement performance of a four-years-old concrete road that...
Pavement Performance and Evaluation of a Four Years Old Concrete Road – Study of a Concrete Section of the E6 Road at Falkenberg in Sweden
A New Laboratory Test to Evaluate the Shear Resistance at the Interface of Thin Bonded Overlays
The effectiveness of thin bonded overlays depends upon the adhesion level at the interface with the existing concrete pavement. It appears that shrinkage, particularly at the very early ages (18-24 hours), is mainly responsible for delamination, i.e. separation between old pavement and overlay. The present paper discusses the results of...
First Experience of Noise-Reducing Exposed Small Aggregate Concrete Surfaces in Japan
In Nagoya, Japan, for a national highway having a large-scale common duct set under the road, concrete pavement with transverse brooming has been adopted in order to ensure structurally durable pavements. However, because these roads are located in an urban area, demand for less noisy pavements has increased. Therefore, in...
A Practical Method of Concrete Pavement Design for Ports
Puertos del Estado, the co-ordinating institution of the main Spanish Port Authorities, has published in 1994 the Guidelines for the Design and construction of Port Pavements ROM 4.1-94, where a practical method of structural pavement design for ports areas has been developed, offering a novel and useful contribution. The different...
Standard Designs for Concrete Roads
A manual on standard pavement design has recently been presented in The Netherlands. This manual deals with various types of roads constructed in plain concrete, composed as Publication no. 120 under the auspices of CROW (CROW = Centre for Research and Contract Standardization in Civil and Traffic Engineering). The manual...
Dynamics of the Roads Evaluation of the Forces Transmitted from a Vehicle to the Road Under Different Loading Conditions
A simplified viscose elastic model is proposed which is able to simulate the dynamic interactions between a vehicle and the rigid pavement under different loading conditions (constant and linearly variable in time). The deformations are correlated to the length of the mobile loads and to the characteristics of the vehicle....
Flexural Strength of High Performance Concrete
High strength concrete (HSC) having a flexural strength considerably higher than that of ordinary pavement concrete would be a suitable material - to replace only a single lane of concrete pavement deteriorated by heavy duty traffic (see Fig. 1) or - for constructing new pavement for high load with limited...
Hydraulic Concrete Roadways on the Autopista Del Mediterraneo Appraisal and Management
This paper addresses the appraisal and management procedure used for more than 20 years by a toll motorway concessionaire, covering a total of 300 kilometres of concrete dual carriageway built between 1970 and 1985. The system of analysis, surveys and experiments carried out during this period was based on auscultations...
Performance of Thin Concrete Overlays in South South Africa
Since 1970, several highways in South Africa were cujistructed in Portland cement concrete, the only design being used was the jointed unreinforced concrete pavements. Due to early deterioration as a result of alkali aggregate reaction, one section had to be overlayed In order to determine the last option, several experimental...
High-Quality Concrete with Recycled Aggregates
New laboratory and field investigations showed that it is possible to achieve durable concrete by using recycled aggregate above 4 mm from old pavements with cracks but no frost- or concrete structure deterioration. The concrete compressive and tensile strengths were slightly higher and the cracking sensitivity was slightly lower for...
Computer Aided Design for Flexible Pavements of Concrete Bricks
This paper describes computer aided design (CAD) software and methods employed for effective design of flexible pavements with concrete bricks. Pavements consisting of concrete bricks allow many different patterns to be used. An area which is to be paved with concrete bricks is divided into a number of subdomains which...
Pavement Design Procedures for New Construction and Rehabilitation with Overlay
The first part of the paper deals with the designing of rigid pavements by means of FEM. The NE10-SOILIN program uses the NE-10 finite elements composed of subelement 2D NE-10-M (tetragonal element), subelement 3D NE-I013RJCK and subsoil element. It models the Midlins slab placed on a generally multilayer structure. Under...