Información importante sobre cookies: Utilizamos cookies propias y de terceros para mejorar nuestros servicios. Si continuas navegando, consideramos que aceptas su uso. OK | Más información


Layer of land situated under the surfacing on the sub-base and formation level that supports the surfacing, whose function is mainly resistant, absorbing the main part of the vertical stresses. The materials that it is made of are: - For medium and light weight traffic: macadam or artificial shingle is used. - For heavy traffic: granular materials treated with a binder (emulsions, bitumen), or conglomerate (cement or lime) on semi-rigid pavements, are used. - On rigid pavements: mixtures with cement are made in the form of cement stabilised soil, cement bound gravel or lean concrete, giving stability and resistance to erosion produced by water.