Lioz

Lioz

UNESCO World Heritage Sites, International Union of Geological Sciences and Heritage Stone Subcommission

Published in Gurmeet Kaur, Sakoon Singh, Anuvinder Ahuja, Noor Dasmesh Singh, Natural Stone and World Heritage, 2020

Gurmeet Kaur, Sakoon Singh, Anuvinder Ahuja, Noor Dasmesh Singh

Lioz stone is microcrystalline limestone from Portugal. It is a fossiliferous limestone which imparts aesthetic appeal to the rock and has been in use since the 16th century. It has been recognized as the “Royal stone” for its use in a lot of stately buildings. It is still being quarried and also used in the restoration of old buildings (Silva, 2019).

Structural window frame for in-plane seismic strengthening of masonry wall buildings

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Journal Information

Published in International Journal of Architectural Heritage, 2019

Jorge Miguel Proença, António S. Gago, André Vilas Boas

The geometric physical scale specimens were made with Lioz stone, a type of limestone widely used in the past in Lisbon as an ornamental rock or as a structural material, for lintels and sills of window frames, or as capping, or even as stone units for rubble masonry. The mortar chosen was REABILITA CAL Reboco, which is a pre-mixed natural hydraulic lime mortar produced by Secil Argamassas. This product belongs to the class CSII according to the European standard EN 998–1 (IPQ 2010) and has a compressive strength of between 1.5 and 5.0 MPa (MIA 2015). As a reference, Cunha (Cunha 2013) determined that the compressive strength and flexural strength of REABILITA CAL Reboco were 1.70 MPa and 1.00 MPa, respectively. To meet the requirement of the mortar being as consistent as possible with that used in historical buildings, this strength was reduced by adding 5 kg of river sand for every 25 kg of mortar.

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UNESCO World Heritage Sites, International Union of Geological Sciences and Heritage Stone Subcommission

Structural window frame for in-plane seismic strengthening of masonry wall buildings