Durability of polypropylene geotextiles exposed to several degradation agents - Importance of the incorporation of a chemical stabilizer on the geotextiles formulation

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2006

Autores

Carneiro, JR (Autor) Outra; Almeida, PJ (Autor) FCUP; Lopes, ML (Autor) Outra

Ata de Conferência Internacional

Título: Geosynthetics, Vols 1-4

Páginas: 1559-1562

8th International Conference on Geosynthetics (8ICG)

Yokohama, JAPAN, SEP 18-22, 2006

Indexação

ISI Web of Knowledge - 0 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia do ambiente

Outras Informações

ID Authenticus: P-004-PRD

Abstract (EN): Geotextiles applied in civil engineering structures can suffer changes on their resistance caused by an extended exposure to many physical and/or chemical agents. As geotextiles must perform specific functions for a long period of time, it is very important to evaluate their resistance against such degradation agents. This paper studies the resistance of non-woven polypropylene geotextiles (specially manufactured with different amounts of the additive chimassorb 944) against immersion in acid and alkaline solutions, hydrolysis, thermo-oxidation and artificial weathering. The tensile behaviour of the geotextiles exposed to the degradation agents was analysed and compared with those obtained for unexposed materials. Microscopic changes on the polypropylene fibres caused by exposure to the degrading agents were characterised by scanning electron microscopy. An analytical methodology was developed for the analysis of chimassorb 944 on geotextiles and used to monitor the consumption and/or loss of this additive during the different durability tests.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4