Resistência à compressão simples para solos lateríticos: avaliação da metodologia e influência dos efeitos da temperatura de secagem e energia mecânica.

Abstract

This dissertation presents the results of a study developed with several lateritic soils of North and Northeast of Brazil, aiming to evaluate the test methodology used to determine the value of simple compressive strength, as well as the effect of the increase of drying temperature and mechanical energy at the same strength. Finally, the relationship between this temperature increase and the chemical and mineralogical composition of the selected soils is analyzed. The results showed that the test methodology used to determine the resistance to. Simple compression including shaping of specimens may be considered adequate because the repeatability is within a narrow range. Regarding the effect of the influence of drying temperature, the results showed that the values ​​of simple compressive strength were affected, with a tendency to increase or decrease the resistance to. simple compression depending on the soil. Regarding the effect of the increase of mechanical energy is observed for almost all soils increase in the value of simple compressive strength, the few exceptions observed were to repeat the values. Finally, we tried to relate the behavior of soils in terms of the effect of temperature increase on simple compressive strength with chemical and mineralogical composition; It was observed from this evaluation that, apparently, there is no direct relation of the type "the higher the contents of the chemical components the greater the effect of the drying temperature", for the studied soils.