Geological introduction: Modica Stone
The stone of Modica also called hard limestone belongs to the “Formation Ragusa” and is a sedimentary rock composed mainly of biocalcarenites cemented with foraminifera grayish white in an irregular pattern with a thickness from 50 cm to 2-3 meters.
There are no caves from which these stones are extracted because the boulders are easily found on the Ragusan plateau.
Biomicrarenite or “grainstone” of Duham with scaffolding formed by organizations of varying size.The porosity varies from low, where predominate pelagic organisms (Globigerinidi) Mid high where there are also benthic organisms. The voids are filled by cement microcrystalline replacement of the original matrix.
Physical and Mechanical Characteristics
- By immersion:1,6%
- By capillarity: 0,8%
- Real specific weight: 2680 Kg/mc
- Bulk density: 2510 Kg/mc
- Porosity: 6,3%
- Compression resistance: 808 Kg/cmq
- Resistance to saturation: 725 Kg/cmq
- Flexural strength: 140 Kg/cmq.
USE AND APPLICATIONS
The stone of Modica, given its characteristics of toughness that did not permit easy workability, in the past was employed marginally below its potential.
The prevalent use in addition to the external paved flooring was for elements wainscoting, hemming of pavement, coating of stairs, cantonal and any other application where they were not required particular shapes.
The introduction of modern machines has expanded the range of use that now goes from elements designed for furnishing urban-benches, pitons, planters etc. the façade cladding simple and airy by complex balustrades style to imaginative floor inlay in combination with other natural to the furnishings inside the buildings.