The paper describes enhanced specifications for concrete block roads suitable for heavy channelised traffic in city centres. It describes two case studies and shows how bedding sand and fibre reinforced concrete roadbases can be specified to ensure zero rutting and a cost effective solution.
Fibre Reinforced Concrete Roads Surfaced with Concrete Paving Stones
Enlargement of the Belgian Motorway E40 Brussels-Liege in Kortenberg
The section Brussels-Louvain of the motorway E40 was constructed in 1971 with a pavement in continuous reinforced coticiete fui the tlnee tiaffic lanes and an asphalt pavellielli for the elulergency lane. tue to the increase of heavy traffic, the Flemish Government decided the construction in 1994 of a fourth traffic...
Fiber-Reinforced Roller-Compacted Cement Concrete (Rollfiber) for Continuous Concrete Pavements
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...
Cracking of Continuously Reinforced Concrete Pavements at a Young Age
Calculation of steel-concrete structures calls for understanding the bonding mechanisms, then, to reproduce them, formulating models of behaviour representative of the interface between the two materials in contact. In view of the researches already performed in this domain, we thought it essential to make use of a new test that...
Roughness and Ride Quality of Airport Pavements
This paper describes a method for routinely evaluating airfield pavement surface roughness from an aircraft ride quality perspective. The method is designed to be as compatible as practical with existing pavement management system data collection and reporting processes. Ride quality has always been recognized as a major factor in a...
Research Into Concrete Block Paving with Realistic Load of a Heay Vehicle Wheel
Within the scope of a research project different block pavings have been studied under realistic load of a road test machine considering the influence on the resistance to vertical deformations and horizontal displacements.
The Willebroek Ring Road (N16) – a Development in the Construction of Concrete Roads
The Willebroek ring road is part of the N16 Mechelen - St. Niklaas road. The work was carried out in 3 phases, the first phase starting in 1986. In practice, the ring was constructed with 20 cm of continuously reinforced concrete (50.000 m 2 ). Exposed aggregate surface was required...
Verification of the Acting of the Recycled Building Material for the Production of Rigid Pavements in Concrete of Portland Cement
The objective of the present work is the study of the technical viability of the use of refused material of building construction like aggregates for concrete roads. The first stage consisted of the physical characterization of the aggregates obtained through the grinding, followed by a study of the granulometric composition...
Transverse Joint Spalling Models for JPCP and JRCP
This paper presents transverse joint spalling models developcd for both jointed plain concrete pavements (JPCP) and jointed reinforced concrete pavements (JRCP). These models were developed as a part of a rigid pavement performance study (RIPPER) conducted by ERES Consultants, Inc. and sponsored by the U.S. Federal Highway Administration (FHWA). The...
A Study on the Thin Precast Concrete Pavement for Rehabilitation of Asphalt Pavements
Precast concrete pavcmrnts have the merit to supply concrete slabs of good quality. In the concstructiori of precast concrete pavements, it is not necessary to use any special machines. And the special merit is that traffics can open immediatly because of unnecessary of curing. So this type of concrete pavement...
The Use of Crushed Concrete Aggregate in Concrete for An Industrial Road at Ouffet
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...
Possibilities of Quality Determination of Concrete Surface Layers
Possibilities of applying methods of surface absorption, mercury intrusion porosimetry, pull-off strength tests and thermal analysis in the assessment of the state of the surface layer of a concrete airport runway are given. The results of the tests of properties of differently deteriorated surface layers of concrete in an airport...