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

• Type: Article in International Conference Proceedings Book
• Date: 2006

Authors

Carneiro, JR (Author) Other; Almeida, PJ (Author) FCUP; Lopes, ML (Author) Other

Conference proceedings International

Title: Geosynthetics, Vols 1-4

Pages: 1559-1562

8th International Conference on Geosynthetics (8ICG)

Yokohama, JAPAN, SEP 18-22, 2006

Indexing

ISI Web of Knowledge - 0 Citations

Scientific classification

FOS: Engineering and technology > Environmental engineering

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4