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Evaluation of mechanical and thermal properties after chemical degradation of PVC and HDPE geomembranes
(2013-06-10)
Chemical compatibility between geomembranes and site-specific waste liquids should be assessed since the waste liquids are highly complex mixtures. This paper presents some considerations about the chemical compatibility ...
Thermo-gravimetric analysis (TGA) after different exposures of high density polyethylene (HDPE) and poly vinyl chloride (PVC) geomembranes
(2012-12-03)
This paper presents the results of thermogravimetric analysis (TGA) tests in PVC (1.0; 2.0 mm) and HDPE (0.8; 2.5 mm) geomembranes exposed to weathering and leachate after 30 months. The aim of this paper is the comparison ...
Influence of the degradation on the stress cracking values of high density polyethylene (HDPE) geomembranes after different exposures
(2012-12-03)
This paper presents results from stress cracking (SC) tests performed in both fresh and exposed high density polyethylene (HDPE) geomembranes (GM). The HDPE GMs were exposed to ultraviolet radiation, thermal aging (air ...
EVALUATION OF THE INFLUENCE OF DAMAGE ON THE PERMEATION AND DIFFUSION OF POLYMERIC GEOMEMBRANES
(Centro Federal Educacao Tecnologica Rio Grande Norte, 2021-01-01)
Geomembranes have been used in order to waterproof and protect the soil, as well as groundwater and water sources. However, during the installation process they can become susceptible to the occurrence of mechanical damage ...
Thermoanalytical and dynamic mechanical analysis of commercial geomembranes used for fluid retention of leaching in sanitary landfills
(2018-01-01)
Studying thermal behavior is very important for monitoring the quality of polymers on an industrial scale. Commercial geomembranes are materials with low permeability that can be used for multiple purposes, such as ...
The Effects of Weathering Exposure on the Physical, Mechanical, and Thermal Properties of High-density Polyethylene and Poly (Vinyl Chloride)
(Univ Fed Sao Carlos, Dept Engenharia Materials, 2013-11-01)
This paper presents results describing the physical, mechanical, and thermal properties (melt flow index - MFI and oxidative induction time - OIT) of high density polyethylene and poly (vinyl chloride) after weathering ...
Efeito da vinhaça na membrana impermeabilizante usada nos tanques de armazenamento
(2013)
This work evaluated the effect of vinasse (residue from sugar cane) in high density polyethylene (HDPE) geomembranes having in mind that it is deposited at temperatures of 80-90˚C on the geomembrane in storage tanks. The ...
Evaluation of stress cracking on geomembranes after accelerated tests
(2014)
This paper presents results of stress cracking tests performed in high density polyethylene (HDPE) geomembranes (GM). Stress cracking tests were performed in accordance to ASTM D5397: Notched Constant Tensile Load Test ...
Analysis of leaks from geomembrane in a sanitary landfill through models of electrical resistivity tomography in South Brazil
(2018-01-01)
Landfills are the main destination of solid waste generated in Brazil. Based on technical criteria, the construction of a landfill aims to minimize environmental impacts since it can present problems of high complexity. ...
Avaliação de recomendações normativas sobre o uso de ensaios no controle de qualidade de fabricação de geossintéticos
(Associação Brasileira de Polímeros, 2008-06-01)
A utilização de materiais poliméricos designados por geossintéticos tem aumentando significativamente nos últimos anos na Engenharia Civil. Para desempenhar adequadamente a função para a qual foram projetados, os geossintéticos ...