An approach for characterising the weathering behaviour of Flysch slopes applied to the carbonatic Flysch of Alicante (Spain)

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Title: An approach for characterising the weathering behaviour of Flysch slopes applied to the carbonatic Flysch of Alicante (Spain)
Authors: Cano, Miguel | Tomás, Roberto
Research Group/s: Ingeniería del Terreno y sus Estructuras (InTerEs)
Center, Department or Service: Universidad de Alicante. Departamento de Ingeniería Civil
Keywords: Carbonatic Flysch lithologies | Slake Durability Test | Index of weathering | Weathering profile | Weathering rate
Knowledge Area: Ingeniería del Terreno
Issue Date: May-2015
Publisher: Springer Berlin Heidelberg
Citation: Bulletin of Engineering Geology and the Environment. 2015, 74(2): 443-463. doi:10.1007/s10064-014-0632-6
Abstract: Various studies indicate that most of the slope instabilities affecting Flysch heterogeneous rock masses are related to differential weathering of the lithologies that make up the slope. Therefore, the weathering characteristics of the intact rock are of great importance for the study of these types of slopes and their associated instability processes. The main aim of this study is to characterise the weathering properties of the different lithologies outcropping in the carbonatic Flysch of Alicante (Spain), in order to understand the effects of environmental weathering on them, following slope excavation. To this end, 151 strata samples obtained from 11 different slopes, 5–40 years old, were studied. The lithologies were identified and their mechanical characteristics obtained using field and laboratory tests. Additionally, the slaking properties of intact rocks were determined, and a classification system proposed based on the first and fifth slake cycles (Id1 and Id5 respectively) and an Index of Weathering (IW5), defined in the study. Information obtained from the laboratory and the field was used to characterise the weathering behaviour of the rocks. Furthermore, the slaking properties determined from laboratory tests were related to the in-situ weathering properties of rocks (i.e., the weathering profile, patterns and length, and weathering rate). The proposed relationship between laboratory test results, field data, and in-situ observations provides a useful tool for predicting the response of slopes to weathering after excavation during the preliminary stages of design.
Sponsor: This work was partially funded by the University of Alicante under the projects vigrob-157 uausti10–18, uausti11–11 and gre09–40 and by the Generalitat Valenciana within project gv/2011/044.
ISSN: 1435-9529 (Print) | 1435-9537 (Online)
DOI: 10.1007/s10064-014-0632-6
Language: eng
Type: info:eu-repo/semantics/article
Rights: © Springer - Verlag GmbH & Co KG Berlin-Heidelberg 2014. The final publication is available at Springer via
Peer Review: si
Publisher version:
Appears in Collections:INV - INTERES - Artículos de Revistas

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