Resistance of geosynthetics against the isolated and combined effect of mechanical damage under repeated loading and abrasion

• Type: Article in International Conference Proceedings Book
• Date: 2019-04

Authors

Maria de Lurdes Lopes (Author) FEUP; Filipe Almeida (Author) FEUP; José Ricardo Carneiro (Author) FEUP; David Miranda Carlos (Author) FEUP

Conference proceedings International

Title: Materiais 2019

Pages: 1-15

Scientific classification

CORDIS: Technological sciences

FOS: Engineering and technology

Associated Projects

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

Other information

DOI: 10.3390/ma12213558

Abstract (EN): The behaviour of materials used for developing engineering structures should be properly foreseen during the design phase. Regarding geosynthetics, which are construction materials used in a wide range of engineering structures, the installation on site and the action of many degradation agents during service life may promote changes in their properties, endangering the structures in which they are applied. The evaluation of the damage suffered by geosynthetics, like installation damage or abrasion, is often carried out through laboratory tests. This work studied the behaviour of five geosynthetics (three geotextiles and two geogrids) after being individually and successively exposed to two degradation tests: mechanical damage under repeated loading and abrasion. The short-term mechanical and hydraulic behaviours of the geosynthetics were analysed by performing tensile tests and water permeability normal to the plane tests. Reduction factors were determined based on the changes occurred in the tensile strength of the geosynthetics. Findings showed that mechanical damage under repeated loading and abrasion tended to affect the mechanical and hydraulic properties of the geosynthetics and that the reduction factors calculated according to the traditional method may not be able to represent accurately the damage suffered by the materials when exposed successively to the degradation mechanisms. © 2019 by the authors.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 15