Análisis comparativo de bases granulares con mezcla de Consolid, cal y cemento

Abstract

This research focuses on stabilizing a granular base by mixing different additives to improve the structure of a pavement. The construction of roads in Ecuador involves the exploitation of non-renewable materials from mines, quarries, and rivers. To address this issue, the aim is to reduce the consumption of these resources by enhancing the mechanical properties of materials with viable and sustainable alternatives. The objective was to find viable stabilization options using additives such as lime, cement, and Consolid 555, following the dosages recommended by current regulations and the specifications of the suppliers.

The results showed that the material without stabilizing additives has a plasticity index (PI) of 3.55% and a CBR of 87%. Dosages of 4% for cement, 3% for lime, and 0.6 lt/m³ of Consolid 555 along with 3 kg/m² of Solidry were used. These dosages significantly improved the load-bearing capacity: the CBR increased to 123.7% with cement, 102.76% with lime, and 190.44% with Consolid 555. Furthermore, the implementation of these additives allowed for the determination of the reduction in the thicknesses of the granular base layers, which were obtained using the AASHTO 1993 design guidelines for pavement structures; decreasing from a thickness of 20 cm of base without additives to 19 cm of stabilization with lime, to 17 cm of stabilization with cement, and to 13 cm of stabilization with Consolid 555.