3rd International Conference on Road and Rail Infrastructure (CETRA 2014)

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Creator Stefan Marian Lazar; Technical University of Civil Engineering Bucharest
Elena Diaconu; Technical University of Civil Engineering Bucharest
Subject flexible pavement structures, subgrade soil, bearing capacity
Description The design methodology of a flexible pavement structures is extremely laborious and complex requiring several work steps. Thus initially are required conducting field studies on the composition
and volume of traffic, geotechnical characteristics of subgrade soil, hydrological regime of pavement system. Then follow the itself design of the pavement structure which involves the following steps: establishing the calculation traffic, determining the bearing capacity
of the road bed, the choice of an embodiment of the pavement structure, pavement structure analysis at the standard axle loading, establishing the pavement structure behaviour under the traffic. In general, in the pavement design practice is considered that the choice of a pavement structure embodiment with thicknesses as great for pavement layers and constituent materials as best ensures a good behaviour of in service pavement structure. Unfortunately is overlook the variation of the subgrade soil bearing capacity during a year due to variations n environmental conditions (humidity, temperature, freeze-thaw) specific for the road site. This paper aims to highlight the magnitude of the subgrade bearing capacity influence on the flexible pavement structures behaviour. In the study it will be shown that the stress and strain state in the pavement structure is a very sensitive indicator of the importance of road bed soil condition and quality, and as such, it is very important to take this aspect into account in
order to have not surprises during the pavement exploatation.
Publisher CETRA 2014
Date 2017-02-28 16:46:20
Type Peer-reviewed Paper
Source CETRA 2014; 3rd International Conference on Road and Rail Infrastructure
Language en
Rights <p>Authors who submit to this conference agree to the following terms:<br /> <strong>a)</strong> Authors retain copyright over their work, while allowing the conference to place this unpublished work under a <a href="">Creative Commons Attribution License</a>, which allows others to freely access, use, and share the work, with an acknowledgement of the work's authorship and its initial presentation at this conference. <br /> <strong>b)</strong> Submitted full papers will be published in the book of proceedings "Road and Rail Infrastructure II" as well as in digital form (on a CD). Conference organiser is allowed to publish author's names, institution and country as well as the paper abstract on the conference web site.</p>

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