Banca de DEFESA: LYNEKER SOUZA DE MOURA

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : LYNEKER SOUZA DE MOURA
DATE: 21/06/2021
TIME: 15:00
LOCAL: Auditório Pós-Graduação Engenharia Civil - CTG - UFPE
TITLE:

Use of Textile Treatment Sludge in Asphalt Coatings: A Mechanical, Microscopic and Environmental Analysis

KEY WORDS:

Asphalt coating. Asphalt concrete. Filer. Textile sludge. Paving

PAGES: 193
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

Textile sludge is an industrial waste that is difficult to treat and has a high cost of final disposal. However, when dry and ground, it acquires granulometric properties compatible with the filler additions used in road paving. Its incorporation to asphalt concrete was evaluated in mechanical, microscopic and environmental scopes. For this purpose, Marshall type dosages containing 2.0 to 5.0% of sludge and 4.5 to 6.5% of binder were carried out, aiming at a formulation with the maximum inclusion of the residue within acceptable parameters. Through the analyzes carried out, it is evident the potential efficiency of adding 2.0 to 3.0% of textile sludge in asphalt mixtures type “C” as a constituent material of the pavement, either with aggregates, or previously mixed with the binder. As for the viscosity of the binder modified by textile sludge, there was an increase in the viscosity of CAP 50/70 by up to 37% at 135 ºC and up to 28% at 177 ºC, which makes the binder less susceptible to thermal changes. There were no harmful effects on the tensile strength, permanent deformation and stiffness of the mixtures, remaining statistically equivalent to the reference sample, without sludge. The inclusion of textile sludge did not cause any damage to the durability of the asphalt concrete, verified through the cantabrotest and damage by induced humidity, in addition to demonstrating satisfactory adhesion, proven by microscopic analysis. As for fatigue resistance, the textile sludge did not present a deleterious effect on the asphalt coating in the 2.0% mixtures, with an increase of up to 38% in the number of cycles for mixtures with 3.0% textile sludge, being observed the direct addition to the binder. The results of permanent deformation indicate that the asphalt mixtures presented here are recommended for medium flow routes (N, between 3 × 10⁶ and 1 × 10⁷). Environmental analyzes of leaching, solubilization and microscopy indicate an effective trapping of textile sludge within the asphalt matrix. A simplified analysis of operational viability showed that it is possible to use up to 20t of textile sludge per km of paved road. Finally, it can be said that the results of this research ratify the applicability of the asphalt coating as a matrix for immobilizing waste, ensuring its effective apprehension, in addition to bringing mechanical benefits to the pavement, and environmental benefits to society

 

BANKING MEMBERS:
Presidente - 1152919 - ARNALDO MANOEL PEREIRA CARNEIRO
Externa ao Programa - 1492780 - ERIKA PINTO MARINHO
Externo à Instituição - JORGE BARBOSA SOARES - UFC
Externo à Instituição - LAURA MARIA GORETTI DA MOTTA - UFRJ
Interno - 2767145 - MAURICIO OLIVEIRA DE ANDRADE