and safety levels for very many years. The Ministry of Transport, Infrastructure and Facilities of the Walloon Region conducted a comparative study of the motorway in 2000 between a continuously reinforced concrete pavement and a bituminous pavement. Very many factors obviously come into play for an objective comparison and they...
Fine Filler and its Impact to a Cement Composite Life Cycle
Development of new types concrete technology caused an increasing of concrete mixture production with a high proportion of fine filler in recent years. Fine filler is used to ensure required concrete mixture rheology qualities, which are needed to the concrete mixture storage into boarding. There are several materials can be...
Effects of Finishing and Air-Entrainment on De-Icing Salt Scaling Resistance of Concrete Surfaces
The main difference between pavements and other elements made of concrete is the surface property. The surface in concrete pavement must be finished properly. It has been known for a long time that air-entrainment can be used against freezing and thawing deterioration of concrete pavement slabs. In the freeze-thaw attack,...
Durability of Concrete Roads with Blended Cements
The study was conducted to bring out the salient features of blended cements, which go a long way in establishing the durability of rigid pavements. Blended cements not only enhance the life cycle of concrete road by protecting it from chloride and sulfate attack but also reduce the thermal cracking,...
Accelelated Loading Test of Porous Cement Concrete Pavement to Evaluate Durability and Permeability
This paper presents results of study on evaluating durability and permeability of porous cement concrete pavement by accelerated loading test at PWRI pavement test track. The following procedure was conducted to evaluate the durability and permeability of porous cement concrete pavement. Three test sections were constructed in 1997. These sections...
Bearing Capacity of Concrete Roads
The pavement management of concrete roads in Ge rmany is essentially based on surface-referred status datas. Suitable measuring techniques are available for the data aquisition. Approved and practicable methods apply for their evaluation. However there are no appropriate procedures and concepts for the structural substance evaluation regarding the prognosis of...
Joint-Design on Concrete Motorways in Austria
A recently finished study at the Research Institute of the Association of the Austrian Cement Industry and the Institute for Road Construction and Maintenance, Technical University Vienna focuses on the improvement of the joint design on concrete roads. The main issues of this study are presented in this paper. Special...
Continuous Pavement with Three-Dimensional Joints JRI
From the point of view of construction performances concrete qualities are well known, durability, high elasticity modulus and workability, for instance, stand for them among many others. But it is also well known that unfortunately, not all of its properties are on the positive side. Cracking, by a variety of...
Actual Specification of Concrete Pavement and a System For Ultimate Limit State Design
At this time, in Germany two new constructions for heavy duty roads were introduced into RStO: the "Thick Concrete Pavement on Coarse Aggregate Layer" and the "Concrete pavement on Hydraulic Bound Road Base with Geotextile Membrane between both". The standardizised thickness of rigid pavement in "RStO" only depends on the...
The High-Performance Concrete Carpet, a New Type of Concrete Course Layer
The paper gives an overview on an on-going R&D project carried out by LCPC (France). The aim is to develop a purely hydraulic road structure in accordance with modern infrastructure requirements, which may also be used to rehabilitate old rigid pavement. The High-Performance Concrete (HPC) carpet consists in building a...
Effects of Freezing Thaw in Concretes Produced with Different Cements
Serviceability of the concretes that undergo such effects of repetition of freezing-thaw is greatly affected by water-cement ratio, permeability, composition of the cement and mineral additves. Water-cement ratio being between 0.40-0.50, the concrete having a structure without any voids, using a cement with mineral additives, increase the resistance of the...
Finite Element and Post-Crack Analysis of Fiber Reinforced Concrete Pavement Structures
Potentially useful improvements in the mechanical behaviour of concrete can be achieved by incorporating fibers in the concrete matrix while it is being poured. In this study an analytical investigation was performed using a finite element analysis where various materials and geometrical parameters were included in different sets of numerical...