Human settlements built on weak rock deposits are often characterized by instabilities or collapse that may involve the underground cavities and consequently the above buildings. Underground calcarenite quarries in Marsala have been involved in a number of collapses that have seriously damaged numerous buildings. Unfortunately proper engineering solutions have not yet been identified according to the different and special cases and to the properties of this structured material. In order to investigate structure effects on the behaviour of the porous calcarenite of Marsala, this paper presents a comparison between the one dimensional compression behaviour of the intact rock and of the same weak rock in the reconstituted state. The investigated lithotype is a metastable rock whose mechanical behaviour is strongly affected by its structure, which is commonly distinguished in the literature as a combination of fabric and bonding. The investigation has highlighted original results, not reported in the literature for this material, such as the irrelevance of bonding in determining the stiffness. A laboratory study was also undertaken to assess the use of polymer treatment or inorganic consolidants as a solution to improve the mechanical behaviour of this weak rock.

Zimbardo M., Nocilla A., Coop M.R., Ercoli L., Megna B., Mistretta M.C. (2020). The Effects of Structure on the One Dimensional Compression Behaviour of a Porous Calcarenite. In F.C. Francesco Calvetti (a cura di), Geotechnical Research for Land Protection and Development Proceedings of CNRIG 2019 (pp. 481-489). Springer [10.1007/978-3-030-21359-6_51].

The Effects of Structure on the One Dimensional Compression Behaviour of a Porous Calcarenite

Zimbardo M.
;
Ercoli L.;Megna B.;Mistretta M. C.
2020-01-01

Abstract

Human settlements built on weak rock deposits are often characterized by instabilities or collapse that may involve the underground cavities and consequently the above buildings. Underground calcarenite quarries in Marsala have been involved in a number of collapses that have seriously damaged numerous buildings. Unfortunately proper engineering solutions have not yet been identified according to the different and special cases and to the properties of this structured material. In order to investigate structure effects on the behaviour of the porous calcarenite of Marsala, this paper presents a comparison between the one dimensional compression behaviour of the intact rock and of the same weak rock in the reconstituted state. The investigated lithotype is a metastable rock whose mechanical behaviour is strongly affected by its structure, which is commonly distinguished in the literature as a combination of fabric and bonding. The investigation has highlighted original results, not reported in the literature for this material, such as the irrelevance of bonding in determining the stiffness. A laboratory study was also undertaken to assess the use of polymer treatment or inorganic consolidants as a solution to improve the mechanical behaviour of this weak rock.
Settore ICAR/07 - Geotecnica
Settore ING-IND/22 - Scienza E Tecnologia Dei Materiali
Settore GEO/05 - Geologia Applicata
www.springer.com/series/15087
Zimbardo M., Nocilla A., Coop M.R., Ercoli L., Megna B., Mistretta M.C. (2020). The Effects of Structure on the One Dimensional Compression Behaviour of a Porous Calcarenite. In F.C. Francesco Calvetti (a cura di), Geotechnical Research for Land Protection and Development Proceedings of CNRIG 2019 (pp. 481-489). Springer [10.1007/978-3-030-21359-6_51].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/535252
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