Synergy between mechanical damage and abrasion of a composite geosynthetic and its variability

• Type: Article in International Conference Proceedings Book
• Date: 2015

Authors

M. Pinho Lopes (Author) Other; M. L. Lopes (Author) FEUP

Conference proceedings International

Title: Proceedings of the XVI ECSMGE Geotechnical Engineering for Infrastructure and Development

Pages: 3291-3297

XVI ECSMGE Geotechnical Engineering for Infrastructure and Development

Edinburgh, 13-17 September

Indexing

Scopus

Scientific classification

FOS: Engineering and technology

CORDIS: Technological sciences

Associated Projects

GeoEndurance - GeoEndurance - Durabilidade associada à resistência de geossintéticos

Other information

Abstract (EN): In this paper results of tests to assess the effect of mechanical damage (generally associated with installation processes) and abrasion are presented. Laboratory tests were carried out. The material tested is a composite consisting of two overlapped geosynthetics: a nonwoven geotextile and a woven geogrid. The composite was submitted to each referred agent (mechanical damage and abrasion damage) in isolation and sequentially, in order to assess an eventual synergetic effect. The effect of the damage induced in the shortterm mechanical properties of the geosynthetic was assessed. The variability of these properties was assessed by using either 1 or 3 tests per sample. Abrasion damage (either isolated or combined with mechanical damage) was the most critical mechanism, leading to higher reductions of tensile strength. Increasing the number of tests used to characterise the samples from 1 to 3, has reduced the variability of the properties assessed, although the tensile strength values decreased and the peak strain and secant stiffness modulus for 2% strain increased. The number of characterisation tests carried out per sample didn’t affect the trends observed associated with the damage induced. Some synergisms were observed for mechanical and abrasion damage.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7