STUDIES OF CONSERVATION OF GEOLOGICAL MATERIALS USED IN CULTURAL HERITAGE

• Grant number: 15/10858-8
• Support Opportunities: Regular Research Grants
• Start date: October 01, 2015
• End date: March 31, 2018
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geology
• Principal Investigator: Eliane Aparecida Del Lama
• Grantee: Eliane Aparecida Del Lama
• Host Institution: Instituto de Geociências (IGC). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated researchers: Emílio Velloso Barroso ; José Delgado Rodrigues ; Thais Alessandra Bastos Caminha Sanjad

Abstract

The diversity of geological materials used in cultural heritage is great. This project will cover, among these materials, rocks and mortar/pictorial layer, and there will be two research lines. These issues have already been addressed in previous projects funded by FAPESP and today with the post-graduate students and external collaborators it is feasible to carry out research on both subjects. The city of São Paulo has several buildings and monuments made of rocks, such as Itaquera Granite, Mauá Grey Granite, Piracaia Black Granite, Itupeva Pink Granite and Itararé Sandstone. One of the lines of this project is to continue and deepen the study of methodologies and diagnosis of the conservation state of architectural surfaces and advance the understanding of deterioration mechanisms based on petrographic studies, physical and/or chemistry characterization, modeling of evolution through realization of accelerated weathering tests and using, wherever possible, non-destructive methods (ultrasound, spectrophotometry, sclerometry, infrared thermography). Treatment of rocks, such as, consolidant application is also considered. Mortar/pictorial layer is the other line of this project. In this case, the objective is to continue and deepen the studies developed in painter Fulvio Pennacchi's frescoes, seeking to implement methodologies to identify execution method variations of his works, in addition to characterize the mortar and identify the mineral pigments. These studies aim to contribute to improve the diagnostic capabilities of the conservation state of São Paulo's heritage and provide knowledge that can assist in possible future conservation and restoration projects. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DANIELLE GROSSI; ELIANE APARECIDA DEL LAMA. Inhibition of swelling clays and consolidation of Itararé Sandstone using diaminoalkanes (DAA) and ethyl silicate (TEOS). BRAZILIAN JOURNAL OF GEOLOGY, v. 52, n. 3, 2022-06-10. (15/10858-8, 12/24067-4)

PUGLIERI, THIAGO SEVILHANO; MILHEIRA, RAFAEL GUEDES; DEL LAMA, ELIANE APARECIDA; MAGON, PATRICIA MARQUES; DO SANTOS, SAILER SANTOS. Multi-technique investigation of potshards of a cerrito (earthen mound) from southern Brazil. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, v. 206, p. 48-56, JAN 5 2019. (15/10858-8)