Design of pavements involves a study of paving materials their behavior under loads, climatic conditions & the under lying sub grade reaction. For the present study an attempt has been made to propose an alternative method of design of rigid pavements using NISA package. 2-D plane strain and axisymmetric solid...
Zurich Airport Concrete Pavement Design
In response to manage the increase in air traffic volume, Zurich International Airport has built a new Midfield Dock with apron and a new taxiway system. For the new operational surfaces, which lie in a reclaimed swamp area, a hard-wearing but economic pavement had to be built for aircraft weights...
Determination of a Dedicated Concrete Pavement Network Using Probabilistic Life-Cycle Cost Analysis
In 2001, the Québec Ministry of Transportation (MTQ), in Canada, adopted a policy subdividing the existing pavement network into dedicated concrete and asphalt networks. This paper presents the methodology used for determining these respective dedicated networks using probabilistic Life Cycle Cost Analysis (LCCA). Sixteen (16) different combinations of Average Annual...
From the Road To the Railway Urban Transportation Trackdim Transposition of a Calculation Method
Alstom who is a major company in the turnkey railways construction activity including railways track construction, developed an adaptation of roads and highways calculation modelization based on concrete fatigue resistance under traffic loads to for railways tracks calculation purpose. Roads and highways have a long and rich experience and data...
Experimental and Theoretical Investigations on Concrete Pavements Under Critical Loadings
Experimental and theoretical investigations on deformations and stresses in concrete pavements subjected to realistic weathering conditions have been carried out. On large-size concrete slabs critical hygral and thermal loadings with boundary conditions corresponding to different field situations were simulated. The results of the experiments served to calibrate and to verify...
The PIARC Guideline on in Situ Recycling of Pavements with Cement
Recycling techniques to take profit of materials from existing pavements are being increasingly used, due to different technical, economical and ecological reasons. Therefore, the Technical Committee C7/8 on Pavements of PIARC (World Road Association) has prepared three guidelines dealing respectively with hot recycling in plant of bituminous mixt ures cold...
Life Cycle Cost Analysis Allows to Identify Profit Areas of Concrete Pavements
The need for constructing road pavements characterised by controllable technical performances, high durability and reduced construction and maintenance costs, led to the development of design criteria and procedures for the technical and economic appraisal of the pavements based on Life Cycle Cost Analysis (LCCA). New materials, new technologies and innovating...
Concrete Roads in Pavement Management Systems from Technical To Political Responsibilities
CROW published in 2001 in the Netherlands the new national methodology on Pavement Management Systems on asphalt, block pavements and concrete roads. DHV has been the author of this publication. Two major improvements are implemented in this new methodology: 1. concrete pavements are fully included 2. a connection has been...
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...
Bituminous Pavement and Continuously Reinforced Concrete Pavement (CRCP) on a Motorway in Walloon Region (Belgium) Economical Comparative Study
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...
Economic Models as Basis For Investment Decisions
There is a trend to work with the influence of roads on the whole society. The quality level, and the initial investment cost, for pavements and road superstructures, should therefore be grounded on Life Cycle Cost analysis (LCC). LCC or Whole Life Costing (WLC), is described in a PIARC document...
Types of Reinforced Concrete Railway Infrastructures and Essentials of their Computations
Reinforced concrete railway superstructure type (non-ballasted) is becoming more widespread and important in the world, similarly in Turkey. This type can be used both in all of the light rail systems of urban transport and also the high speed rail systems of intercity transport. Although its construction cost is higher,...