Diseño de losas de hormigón con geometría optimizada

Abstract

Diseño de losas de hormigón con geometría optimizada/Design of concrete pavement with optimized slab geometry

Sustainability of Concrete With Synthetic and Recycled Aggregates

“…Since all the desired objectives and requirements of an engineering structure are specified in the design phase [75], in the case of concrete pavements, the structural design plays an important role in improving the sustainability of the road infrastructure [76]. In this regard, the design method of short slab Jointed Plain Concrete Pavements (JPCP) is a patented alternative that proposes to shorten the slabs size in such a way that there is only one set of wheel loads per slab [77,78]. Therefore, the traditional configuration where the slab can support the full vehicle load does not occur.…”

“…The benefits of this design include, as well, a reduced slab curvature. In this way, the pavement thickness can be reduced up to 10 cm [78], which means than less concrete is required, and then the demand of cement, aggregates and water decreases.…”

“…These features result in savings of approximately 20% of the construction cost, which makes concrete pavements with optimised geometry a competitive solution compared to asphalt pavements when only construction costs are considered in the analysis, i.e. without life-cycle costs [78]. This is especially relevant in developing countries, where construction costs can be the main limit to the application of more durable pavements with less maintenance intervention requirements than asphalt pavements [79,80].…”

“…This is especially relevant in developing countries, where construction costs can be the main limit to the application of more durable pavements with less maintenance intervention requirements than asphalt pavements [79,80]. In fact, promising experiences with concrete pavements with optimised geometry have been carried out in developing countries such as Chile, Guatemala, Nicaragua and Peru [78,[81][82][83]. Moreover, evaluations of short slab test sections in the United States indicate that these pavements have the ability to maintain in-service performance similar to traditional concrete pavements up to 51.3 million equivalent axle loads (ESAL) [84].…”

3D-FE of jointed plain concrete pavement over continuum elastic foundation to obtain the edge stress

“…As a consequence, since the beginning of the year 1970, the MEF, which has become a widely used tool for the analysis of rigid pavements, shows some differences between the studies developed by different authors, related to the way of modeling the slab, the interface with the foundation and load transfer mechanisms (dowels). Such differences can be reflected in the most recent works of the authors (Bayrak & Hınıslıoğlu, 2016;Cobarrubias, 2012;López & Tejeda, 2015;Roy, Reddy, & Ramachandra, 2013).…”