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

Synergy between mechanical damage and abrasion of a composite geosynthetic and its variability
Synergy between mechanical damage and abrasion of a composite geosynthetic and its variability
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 short-term 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
Pinho-Lopes, M.
b7e5f7d6-90d8-48cc-b991-0495445fcea4
Lopes, M.L.
dca0c06e-aaa8-47df-923f-5fa9973552ba
Pinho-Lopes, M.
b7e5f7d6-90d8-48cc-b991-0495445fcea4
Lopes, M.L.
dca0c06e-aaa8-47df-923f-5fa9973552ba

Pinho-Lopes, M. and Lopes, M.L. (2015) Synergy between mechanical damage and abrasion of a composite geosynthetic and its variability. XVI European Conference for Soil Mechanics and Geotechnical Engineering, , Edinburgh, United Kingdom. 13 - 17 Sep 2015. 7 pp . (In Press)

Record type: Conference or Workshop Item (Paper)

Abstract

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 short-term 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

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More information

Accepted/In Press date: January 2015
Venue - Dates: XVI European Conference for Soil Mechanics and Geotechnical Engineering, , Edinburgh, United Kingdom, 2015-09-13 - 2015-09-17
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 374966
URI: http://eprints.soton.ac.uk/id/eprint/374966
PURE UUID: 8e40059b-d29e-49e1-9ab2-650e06e5001d
ORCID for M. Pinho-Lopes: ORCID iD orcid.org/0000-0003-0808-6307

Catalogue record

Date deposited: 09 Mar 2015 09:51
Last modified: 15 Mar 2024 03:46

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Contributors

Author: M. Pinho-Lopes ORCID iD
Author: M.L. Lopes

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