Evaluation of mechanical behaviour of soil-lime mixtures under various exposure conditions

Abstract

This paper discusses the mechanical behaviour of soil-lime mixture under various exposure conditions. The study was carried out with three kinds of tropical soil (i.e., yellow-red latossol, dark red latossol, and yellow-red podzolic) collected from the northwest of the Sao Paulo State and southeast of the Mato Grosso do Sul State, in the Parana River Sedimentary Basin. Brazil. The soil-lime mixtures were prepared in two compaction grades (95% and 100% of Proctor energy) with 8% of lime and tested under axial compression. The specimens were prepared in three different exposure conditions (i.e., fully immersed, partially immersed, and exposed in the air) and they were tested in three different time intervals (six, twelve, and eighteen months after compaction). The three soil types showed a very distinct mechanical behaviour in terms of their strength due to lime addition, exposure conditions, and maximum shearing resistance.