Laboratory Evaluation of Interactions in the Degradation of a Polypropylene Geotextile in Marine Environments

• Type: Article in International Scientific Journal
• Date: 2018-05-03

Authors

Maria de Lurdes Lopes (Author) FEUP; José Ricardo Carneiro (Author) FEUP; Paulo Joaquim Almeida (Author) Other

Journal

Title: Advances in Materials Science and Engineering

Vol. 2018

Pages: 1-10

ISSN: 1687-8434

Publisher: Hindawi

Indexing

ISI Web of Knowledge - 8 Citations

ISI Web of Science

Scopus - 8 Citations

INSPEC

Scientific classification

FOS: Engineering and technology

CORDIS: Technological sciences

Associated Projects

GeoSynergism - Avaliação de Efeitos Sinérgicos na Degradação de Geossintéticos (GeoSinergismo)

Other information

Authenticus ID: P-00R-AJ4

DOI: 10.1155/2018/9182658

Abstract (EN): The long-term behaviour of geosynthetics applied in coastal engineering structures can be adversely affected by many agents. This paper studies the resistance of a nonwoven polypropylene geotextile against some degradation agents present in marine environments and evaluates the existence of interactions between them. For that purpose, the geotextile was exposed to some laboratory degradation tests: immersion tests (in seawater, deionised water, and sodium chloride 35 g.L-1), thermooxidation, and artificial weathering. The geotextile was (1) exposed separately to each degradation test and (2) exposed successively to combinations of two or three degradation tests. The damage caused by the degradation tests was evaluated by monitoring the tensile properties of the geotextile. Based on the changes occurred in tensile strength, reduction factors were determined. The reduction factors obtained directly in the multiple exposures were compared with those obtained by the traditional methodology for the combined effect of the degradation agents. The results, among other findings, showed the existence of relevant interactions between the degradation agents and showed that the reduction factors obtained by the traditional methodology were unable to represent accurately (by underestimating) the degradation occurred in the geotextile.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10