Open AccessMechanical behavior, under four-point bending test, of compositions with soil, bio-char and charcoal
Author(s) -
Alemar Pereira Torres,
Anne Karollynne Castro Monteiro,
Igor ato Almeida Pereira,
Cláudia Ávila Barbosa,
Carlos Eduardo Neves de Castro,
Consuelo Alves da Frota
Publication year - 2020
Publication title -
research, society and development
Language(s) - English
Resource type - Journals
ISSN - 2525-3409
DOI - 10.33448/rsd-v9i12.10966
Subject(s) - biochar , charcoal , context (archaeology) , carbonization , char , environmental science , coal , waste management , materials science , engineering , geology , composite material , pyrolysis , scanning electron microscope , paleontology , metallurgy
Soil stabilization for use in pavement sublayers has been established in Geotechnical En-gineering as an option for pavement construction. In this context, certain alternative materials stand out, such as coal and biochar, which are able to fulfill this function when added to the soil, being the object of study in the present research. These products originated from char-coal furnaces and biomass carbonization under low oxygen atmosphere. In the present study we evaluated the natural soil and compositions according to the four-point bending test, for simulating vehicle tire-loads on the pavement. For this purpose, we molded prismatic speci-mens with natural soil (NS) typical of the Amazon region, with natural soil-10% charcoal (SCH) and soil-10% biochar (SBC). It was verified that the soil-biochar mixture (SBC) pre-sented better results, culminating in higher values of complex modulus when compared to the natural soil (NS) and soil-charcoal mixtures (SCH). Regarding the phase angle parameter and the analyzed set (NS, SCH e SBC), values close to zero were observed. Therefore, this article presents the possibility of using alternative materials for executing road systems with better performance.