DBPapers
DOI: 10.5593/SGEM2014/B62/S26.045

SUSTAINABLE PAVEMENTS: AN ANALYSIS OF THE CRACKS WIDTH IN JOINTED PLAIN CONCRETE PAVEMENTS WITH SHORT SLABS

M. Pradena, L. Houben
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-21-6 / ISSN 1314-2704, June 19-25, 2014, Book 6, Vol. 2, 347-354 pp

ABSTRACT
A technical, economic and environmental analysis over the road life cycle shows that concrete pavements are a sustainable paving alternative. However, the election of concrete as material for pavements is limited when only the construction costs are considered in the analysis. Because of the load configuration and the curling reduction, the Jointed Plain Concrete Pavements (JPCPs) with short slabs allow less thickness and therefore less construction costs (savings up to 30%). The objective of the present paper is to analyze the crack width under the joints of JPCPs with short slabs and the implications of these values for the performance of the pavement. For that, a comparison of the magnitude of the crack width is made with the traditional JPCP, using a model developed by the authors, field data of cracks width and Load Transfer Efficiency (LTE), and taking into account practical experiences of JPCPs with short slabs. For the analyzed conditions a reduction of 40% of the average cracks width of the JPCP with short slabs in comparison with the value of the traditional JPCP was found. This means better aggregate interlock, then higher LTE and less deterioration of the pavement, which is in agreement with the good performance that JPCPs with short slabs have shown in U.S. and Chile

Keywords: Sustainable; Pavements, Concrete; Crack Width.