STABILIZATION OF KAOLINITIC CLAYEY SOIL WITH GLASS WASTE AND ROCK DUST WASTE PULVERIZED IN HIGH ENERGY MILL

The State of Amazonas, Brazil, presents a historic issue related to road pavements due to the great percentage of clayey soil in subgrades. Because of that, researchers have been searching for alternative solutions aiming the rational use of finite resources and the development of new technologies. In this study, the effects of glass waste and “rock dust” were investigated, both pulverized in high energy mill for stabilization of a typical clayey soil. Accordingly, UCS and tensile strength by diametral compression were conducted on soil specimens together with the addition of 10% and 50% of glass and rock. The results showed that 10% of glass content increased up to 21% on UCS compared to soil “in natura”. Furthermore, by adding “rock dust” waste, the strength also improved up to 60% on UCS and 8% on TS. In particular, the mechanical parameters indicated 10% of content, on either glass or rock waste, to be the effective amount on stabilization of clayey soil.