USE OF THE SOIL-TAR MIXTURES IN FOREST ROADS

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Dalila C. M. Fernandes Carlos C. Machado Dario C. Lima I. Jucksch Reginaldo S. Pereira

Abstract

The purpose of this study was to analyze the engineering behavior of the soil-tar mixtures considering their application in forest road. The laboratory-testing program encompassed characterization and California bearing ratio (CBR) tests performed on soils and soil-tar mixtures. Three representative soil samples from the Viçosa, Minas Gerais State, Brazil, and tar contents of 0,25; 0,5; 1; 2; 4 and 6% in terms of dry soil mass were considered throughout the study. All the samples were compacted at the Standard AASHTO compaction effort. Data support that: (i) addition of tar contributed to improve the mechanical engineering response of the tested soils, for some treatments, in comparison with the plain soils; (ii) curing time influences the mechanical response of the soil-tar mixtures; (iii) although it was observed mechanical improvement of the soil-tar mixtures comparing to the plain soils, it was not reached the Brazilian National Road Engineering Office (DNER) minimal stability requirements for sub-base layers of flexible pavements.

Article Details

How to Cite
FERNANDES, Dalila C. M. et al. USE OF THE SOIL-TAR MIXTURES IN FOREST ROADS. CERNE, [S.l.], v. 8, n. 1, p. 042-048, sep. 2015. ISSN 2317-6342. Available at: <http://cerne.ufla.br/site/index.php/CERNE/article/view/461>. Date accessed: 17 sep. 2019.
Keywords
Forest road, soil-tar mixtures, Eucalyptus wood, CBR
Section
Article