Banca de DEFESA: LEANDRO GOMES DA ANUNCIAÇÃO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : LEANDRO GOMES DA ANUNCIAÇÃO
DATA : 19/06/2019
HORA: 13:30
LOCAL: PROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA CIVIL
TÍTULO:

DEVELOPMENT OF A CONSOLIDOMETER OF LARGE DIMENSIONS FOR MSW WITH MEASUREMENTS OF K0, BIOGAS PRODUCTION AND PERMEABILITY

PALAVRAS-CHAVES:

Keywords: Edométrico Test; Urban solid waste; Biodecomposition

PÁGINAS: 140
GRANDE ÁREA: Engenharias
ÁREA: Engenharia Civil
RESUMO:

Despite the growing advance in the understanding of the mechanisms that govern municipal solid waste (MSW) behavior in the last decades, studies on many aspects of its mechanical behavior are still necessary, including, the lateral earth pressure ”at-rest” (k0) related to the phenomenon of biodecomposition. All this in a scenario in which the use of the area post-closured becomes increasingly important and researchs find a lack of equipment to analyze and that contemplate the peculiarities of this material. Therefore, this work tried to build a servo-controlled large load cell (LCC) consolidometer, with the potential to study different aspects of MSW in the face of biodecomposition.

For this purpose, a preexisting equipment, belonging to the Federal University of Bahia,was restructured to work with a hydraulic-pneumatic system controlled by a software and allow the edomedical cell operate as a small bioreactor, that besides the vertical deformation, could measure the lateral earth pressure ”at-rest” coefficient, biogas production, leachate recirculation and evaluate the hydraulic properties and suction of the residue. The developed of LCC was used to carry out an edometric compression test on waste from the Metropolitan Center Landfill (Salvador-Ba), which lasted 243 days and applied vertical stress ranging from 10KPa to 1000KPa. During the test it was possible to verify an increase in the k0 proportional to the age of the residue to quantify the biogas production, composition, suction and moisture content at three different points of the sample, allowing the delimitation of three evolutionary stages of biodegradation.

The obtained data were used in a deformation modeling of different areas of the landfill located in Salvador-Ba, which obtained a correlation coefficient equal to 0.95, which together with comparisons of datas from the literature allowed to conclude that the apparatus is suitable for use, constituting an important tool for the predictability.

MEMBROS DA BANCA:
Presidente - 1219972 - SANDRO LEMOS MACHADO
Interno - 1299309 - MIRIAM DE FATIMA CARVALHO MACHADO
Externo à Instituição - ANTÓNIO JOSÉ ROQUE