Banca de DEFESA: WAGNER JOSÉ OPOLSKI

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : WAGNER JOSÉ OPOLSKI
DATE: 28/08/2025
TIME: 14:00
LOCAL: Formato remoto
TITLE:

Woven geotextile degradation due to coastal environment weathering

KEY WORDS:

geotextile; polypropylene; natural weathering; thermal monitoring; tensile strength.

 

PAGES: 129
BIG AREA: Engenharias
AREA: Engenharia Civil
SUBÁREA: Geotécnica
SUMMARY:

This study investigated the degradation of a polypropylene (iPP) geotextile subjected
to natural weathering and validated a thermal monitoring system developed for field
measurements. The research was based on experimental campaigns carried out in the
metropolitan region of Natal/RN, using custom thermal sensors and a weather station
to characterize environmental conditions. The sensors showed good thermal tracking
performance, with mean absolute errors below 2.5°C compared to a reference industrial
sensor, highlighting the importance of prior calibration in a controlled environment.
The analysis of environmental data confirmed the reliability of the Plugfield weather
station, whose measurements were consistent with INMET data. Tensile tests conducted
in two distinct periods revealed the progressive loss of geotextile strength over time,
with average reductions ranging from 8.4% to 16.2% in the second period, depending
on exposure conditions. The results highlight the cumulative effect of weathering on the
material’s mechanical properties and reinforce the need to consider environmental aging
in geosynthetics design. The study also demonstrates the feasibility of using low-cost
continuous thermal sensors for monitoring exposed geotextile structures, contributing to
more durable and safer engineering practices.

 

COMMITTEE MEMBERS:
Presidente - 2085750 - FAGNER ALEXANDRE NUNES DE FRANCA
Interno - 2239386 - JOSE IVAN DE MEDEIROS
Externo ao Programa - 2411669 - JONATHAN MOTA DA SILVA - UFRNExterna ao Programa - 1645481 - VIVIANE MUNIZ FONSECA - UFRNExterno à Instituição - JOSÉ LUIZ ERNANDES DIAS FILHO - UFOB