The Impact of Activated Blast Furnace Slag on the Mechanical Behavior of Dune Sand for Use in the Road Sector

Abstract

The use of dune sand in the field of civil engineering, particularly in road technology, is a very interesting way of valorization. This material makes it possible to solve the problem of shortage of road materials which is based on the use of noble natural materials from quarries. It allows it to be valued as local material which is found in abundance in Algeria. This work makes it possible to achieve ecological, technical and economic objectives and results in a solution for sustainable development. It contributes to improve knowledge of the mechanical and rheological characteristics of dune sand treated with fine silt soil and blast furnace slag activated by lime. The study was carried out on formulations and mechanical tests (modified Proctor particle size distribution tests, CBR tests, shear strength tests, compressive strength tests, consolidation tests and hydraulic conductivity tests). The results obtained made it possible to improve the mechanical parameters of the studied formulations for use in pavement layers.