Conventional maintenance of rutted asphalt roads means resurfacing in short intervals or substitution of thick layers. Therefore, a new repair method was tested: Milling the top of the existing asphalt pavement, cleaning the surface and plaeing a dan layci of high performance concrete. The behaviour of the composite structure was...
Whitetopping and Ultra-Thin Whitetopping – the US Experience
Concrete overlays of existing asphalt pavement, referred to as "whitetopping," is one of the most rapidly emerging technologies for rehabilitating pavements in the U.S. Although its use can be traced back to 1918, conventional (or classical), whitetopping became routinely used in the mid-1970's with use significantly increasing in the 1980's...
Determination of the Friction Coefficient and Thickness of the Macrotexture in the Runway of Ushaia’s International Airport
The air operation in Ushuaia is of such difficulty that landing in the runway of the old Sea and air Base at Ushuaia was considered quite a challenge by the pilots that operated there. Several accidents occurred, amongst them one that destroyed a Boeing B-737 and another in which a...
Cement Concrete Public Highways Recent Developments in Technical Literature and Applications
In a still recent past, research and innovation in the field of concrete pavements progressed mainly within the field of high volume pavements for roads and airports. This sustained and productive effort remains, giving rise to an expertise well documented in technical publications. Several countries converge in adopting constructive measures,...
The Shrinkage Model in the Non-Linear Fem Program Parma for the Design of Reinforced Concrete Pavements
The design of reinforced concrete pavements presents complex problems of modelling, owing to the marked nonlinearity of structural response of the reinforced concrete, of the foundation and the unilateral behaviour of the interaction between pavement and foundation. The external actions to which a road pavement is subjected are the result...
Resurfacing the A6a Motorway Using Continuous Reinforced Concrete – August 1994
The section of the A6a motorway between Porte d'Orléans in Paris and the Wissous interchange (10 km to the sniith) wRr npened in April 1960 For 34 years, the carriageways of this motorway, which have had to stand "double TO" traffic (4000 heavy loads a day), and which consist of...
Foundation Materials – Cement – Stabilised Quarry Sand
When crushing stones of different calibres, quarries produce a large amount of sand, referred to as crushed sand. This material is often considered as a by-product and its use is reserved for less noble applications than road foundation. However, when stabilised with cement, this sand has very interesting properties and...
The Fatigue Behaor of Rolled Compacted Concrete
This paper presents the partial results of a research on Rolled Compacted Concrete (RCC) which aimed at characterizing its fatigue behavior. The influence of cement content (120, 200 and 280 kg/rn 3 ), the mixture aggregate grading (fine, medium and coarse) and the compaction energy (normal Proctor, intermediary and modified)...
Influence of Temperature During Curing on Stresses in Concrete Pavements
In concrete pavement placed during hot weather unfavourable Lelilpelatuies Lall causc high stresses and therefore the formation of cracks. In pavements which are placed in the morning of a hot summer day, after a few hours very high temperatures at the surface and still low temperatures at the bottom of...
Non-Destructive Evaluation of a Reinforced Concrete Road by the SASW Method
The Spectral-Analysis-of-Surface-Waves (SASW) method is a non-destructive seismic method which has been used in situ to determine the elastic moduli of soils and pavements at low level of strain and the variation of these moduli with depth. The test is based on the dispersion of Rayleigh-waves which means that Rayleigh...
Test Method for the Determination of Wear Resistance of Concrete Pavements – a Ring Analysis of Northic Road Simulators
In the European Committee of Standardization (CEN) road simulators have been proposed as test equipment for determining the wear resistance of concrete road surfaces to studded winter tyres. The purpose of this ring analysis was to find what relationship there is between three Nordic road simulators and to produce proposals...
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...