Experimental Study of the Valorization of Sulfate Soils for Use as Construction Material

This article shows an experimental investigation carried out for the stabilization of a sulfate soil. The was in two phases: first phase consumption present soil through its controlled transformation into ettringite. After this, modified with lower maximum density, greater optimum moisture identified via standard proctor (SP) test, no plasticity and improved unconfined compressive strength (UCS) obtained. In second phase, stabilized by use different additives rich oxides calcium or magnesium, combined by-products waste materials containing reactive aluminum silicon oxides. As result, mechanical improved. this binary binder composed magnesium oxide product ground granulated blast-furnace slags (GGBS) obtained highest UCS. lime alumina filler formed ettringite treated experiment allowed validation two-phase process non-conventional used, mainly GGBS, even high-bearing-requirement pavement layers’ construction.