Melhoramento de solo expansivo com cimento politereftalato de etileno (PET) micronizado.

Abstract

The present article addresses the method of chemical stabilization of soils. This technique is based on the addition of a binder to the soil, which does not have the properties suitable for use in construction, in order to improve it. Among the most used stabilizers, there is cement that when incorporated into the soil results in better strength and stiffness values. However, in the current environmental environment there is a great incentive for the use of industrial waste in civil construction. Micronized PET is a material that can enhance stabilization with cement. Therefore, this work intent to study the behavior of an expansive soil when it is stabilized with cement and Micronized PET to develop a comparison between this technique and stabilization with cement and lime only. The soil used was collected from the city of Paulista-PE and stabilized with 30%, 40% and 50% additions of Micronized PET. Cement content and dry specific weight were set at 6% and 15 kN / m³, respectively. Simple compressive strength tests were performed after 6 days of wet chamber cure and 1 day of submerged cure to minimize suction. The simple compressive strength of the Micronized PET-Expansive Soil-Cement mixture increases linearly with increasing micronized PET content, making it a sustainable soil stabilization alternative.