Stabilization of laterial soil using sugar cane and hydrated calculation

ABSTRACT

Sao Paulo State is a global reference in the cultivation and production of sugar cane derivatives, and side roads, many of them dirt ones, are used to move the crop between the harvesting area and the sugar and alcohol processing plants. To transport the production from the plants to distribution centers, roads have been the main logistics means, not only in Sao Paulo State but also all over Brazil. However, only 12.4% of the roads in the country are paved. Moreover, the lateritic soil is the most common in the country, and it needs to be stabilized to compose bases and sub-bases of pavements, which makes the costs of having roads paved even higher. The objective of this research is to study the stabilization of lateritic soil, using the ashes of the sugarcane bagasse burning, in order to enable its use in layers of pavements. The research carried out collected samples of the soil and the ashes, in a plant located in the region of Barretos. Normative tests were carried out to characterize and classify soil and ash. The gray - lime soil mixture was used to evaluate the stabilization. The results showed a CBR (California Bearing Ratio) gain of the natural soil, which initially had CBR 40% and after incorporation of ash and lime reached CBR 82%, thus making feasible the use in base layers of paving.

Keywords
Stabilization; Lateritic Soil; Sugarcane Bagasse