Experimental study of the water weakening of carbonate rocks

Matteo Ciantia (Lead / Corresponding author)

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Carbonate rocks, such as chalks and calcarenites, are very often subject to damage processes responsible of the progressive degradation of their mechanical properties. In particular the water weakening of such rocks can cause the collapse of cliffs and underground cavities, with dangerous consequences for the anthropic environment. In this paper the results of an experimental campaign, intended to both clarify and quantify the mechanical consequences of water weakening, are illustrated. Results of standard laboratory experiments (Uniaxial Compression, Oedometric Compression and Indirect Tensile tests) and non-standard experimental tests (weathering under oedometric and unconfined conditions) are presented. Suitable physical and geotechnical indices are also introduced and different time scales to describe the physical/chemical reactions induced by the water saturation of the material are taken into consideration. The main results can be summarized as: i) a short-term marked and instantaneous reduction in strength, when water fills the pores of the rock, ii) a long-term dissolution of the material causing further damage and iii) a progressive chemically induced reduction in the grain size.
Original languageEnglish
Title of host publicationEngineering in Chalk
Subtitle of host publicationProceedings of the Chalk 2018 Conference
EditorsJ. A. Lawrence, M. Preene, U. L. Lawrence, R. Buckley
Place of PublicationLondon
PublisherICE Publishing
Pages557-564
Number of pages8
ISBN (Electronic)9780727764089
ISBN (Print)9780727764072
DOIs
Publication statusPublished - 2018
EventEngineering in Chalk 2018 International Conference - Imperial College London, London, United Kingdom
Duration: 17 Sep 201819 Sep 2018
https://www.chalk2018.org/about/committees

Conference

ConferenceEngineering in Chalk 2018 International Conference
CountryUnited Kingdom
CityLondon
Period17/09/1819/09/18
Internet address

Fingerprint

carbonate rock
experimental study
compression
water
damage
cliff
chemical reaction
rock
mechanical property
cavity
fill
grain size
weathering
dissolution
saturation
timescale
degradation
test
material

Cite this

Ciantia, M. (2018). Experimental study of the water weakening of carbonate rocks. In J. A. Lawrence, M. Preene, U. L. Lawrence, & R. Buckley (Eds.), Engineering in Chalk: Proceedings of the Chalk 2018 Conference (pp. 557-564). London: ICE Publishing. https://doi.org/10.1680/eiccf.64072.557
Ciantia, Matteo. / Experimental study of the water weakening of carbonate rocks. Engineering in Chalk: Proceedings of the Chalk 2018 Conference. editor / J. A. Lawrence ; M. Preene ; U. L. Lawrence ; R. Buckley. London : ICE Publishing, 2018. pp. 557-564
@inproceedings{960fe87e10b441c6bcf433d3b6992cf6,
title = "Experimental study of the water weakening of carbonate rocks",
abstract = "Carbonate rocks, such as chalks and calcarenites, are very often subject to damage processes responsible of the progressive degradation of their mechanical properties. In particular the water weakening of such rocks can cause the collapse of cliffs and underground cavities, with dangerous consequences for the anthropic environment. In this paper the results of an experimental campaign, intended to both clarify and quantify the mechanical consequences of water weakening, are illustrated. Results of standard laboratory experiments (Uniaxial Compression, Oedometric Compression and Indirect Tensile tests) and non-standard experimental tests (weathering under oedometric and unconfined conditions) are presented. Suitable physical and geotechnical indices are also introduced and different time scales to describe the physical/chemical reactions induced by the water saturation of the material are taken into consideration. The main results can be summarized as: i) a short-term marked and instantaneous reduction in strength, when water fills the pores of the rock, ii) a long-term dissolution of the material causing further damage and iii) a progressive chemically induced reduction in the grain size.",
author = "Matteo Ciantia",
year = "2018",
doi = "10.1680/eiccf.64072.557",
language = "English",
isbn = "9780727764072",
pages = "557--564",
editor = "Lawrence, {J. A.} and M. Preene and Lawrence, {U. L.} and R. Buckley",
booktitle = "Engineering in Chalk",
publisher = "ICE Publishing",

}

Ciantia, M 2018, Experimental study of the water weakening of carbonate rocks. in JA Lawrence, M Preene, UL Lawrence & R Buckley (eds), Engineering in Chalk: Proceedings of the Chalk 2018 Conference. ICE Publishing, London, pp. 557-564, Engineering in Chalk 2018 International Conference, London, United Kingdom, 17/09/18. https://doi.org/10.1680/eiccf.64072.557

Experimental study of the water weakening of carbonate rocks. / Ciantia, Matteo (Lead / Corresponding author).

Engineering in Chalk: Proceedings of the Chalk 2018 Conference. ed. / J. A. Lawrence; M. Preene; U. L. Lawrence; R. Buckley. London : ICE Publishing, 2018. p. 557-564.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Experimental study of the water weakening of carbonate rocks

AU - Ciantia, Matteo

PY - 2018

Y1 - 2018

N2 - Carbonate rocks, such as chalks and calcarenites, are very often subject to damage processes responsible of the progressive degradation of their mechanical properties. In particular the water weakening of such rocks can cause the collapse of cliffs and underground cavities, with dangerous consequences for the anthropic environment. In this paper the results of an experimental campaign, intended to both clarify and quantify the mechanical consequences of water weakening, are illustrated. Results of standard laboratory experiments (Uniaxial Compression, Oedometric Compression and Indirect Tensile tests) and non-standard experimental tests (weathering under oedometric and unconfined conditions) are presented. Suitable physical and geotechnical indices are also introduced and different time scales to describe the physical/chemical reactions induced by the water saturation of the material are taken into consideration. The main results can be summarized as: i) a short-term marked and instantaneous reduction in strength, when water fills the pores of the rock, ii) a long-term dissolution of the material causing further damage and iii) a progressive chemically induced reduction in the grain size.

AB - Carbonate rocks, such as chalks and calcarenites, are very often subject to damage processes responsible of the progressive degradation of their mechanical properties. In particular the water weakening of such rocks can cause the collapse of cliffs and underground cavities, with dangerous consequences for the anthropic environment. In this paper the results of an experimental campaign, intended to both clarify and quantify the mechanical consequences of water weakening, are illustrated. Results of standard laboratory experiments (Uniaxial Compression, Oedometric Compression and Indirect Tensile tests) and non-standard experimental tests (weathering under oedometric and unconfined conditions) are presented. Suitable physical and geotechnical indices are also introduced and different time scales to describe the physical/chemical reactions induced by the water saturation of the material are taken into consideration. The main results can be summarized as: i) a short-term marked and instantaneous reduction in strength, when water fills the pores of the rock, ii) a long-term dissolution of the material causing further damage and iii) a progressive chemically induced reduction in the grain size.

U2 - 10.1680/eiccf.64072.557

DO - 10.1680/eiccf.64072.557

M3 - Conference contribution

SN - 9780727764072

SP - 557

EP - 564

BT - Engineering in Chalk

A2 - Lawrence, J. A.

A2 - Preene, M.

A2 - Lawrence, U. L.

A2 - Buckley, R.

PB - ICE Publishing

CY - London

ER -

Ciantia M. Experimental study of the water weakening of carbonate rocks. In Lawrence JA, Preene M, Lawrence UL, Buckley R, editors, Engineering in Chalk: Proceedings of the Chalk 2018 Conference. London: ICE Publishing. 2018. p. 557-564 https://doi.org/10.1680/eiccf.64072.557