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Article

Properties of the Ignimbrites in the Architecture of the Historical Center of Arequipa, Peru

1
Escuela Técnica Superior de Arquitectura, Universidad Politécnica de Madrid, Av. Juan de Herrera, 28040 Madrid, Spain
2
GEGENAA EA3795, Université de Reims Champagne-Ardenne 2, Esplanade Roland Garros, 51100 Reims, France
3
Ministerio Para la Transición Ecológica (MITERD-OECC), Avda San Juan de La Cruz, 10, 28071 Madrid, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Lola Pereira
Appl. Sci. 2021, 11(22), 10571; https://doi.org/10.3390/app112210571
Received: 26 October 2021 / Revised: 4 November 2021 / Accepted: 5 November 2021 / Published: 10 November 2021
(This article belongs to the Special Issue Applied Petrology: Latest Advances and Prospects)
The petrographic and petrophysical characteristics of three varieties of ignimbrites used in the architectural heritage of Arequipa (southwest Peru) are analyzed. The modal classification QAFP and TAS diagram discriminate their dacitic nature. Mercury injection porometry revealed very high porosity: 46.5% for white and beige ignimbrites, and 35.5% for the pink variety. Ignimbrites contain intrusions of vulcanodetrital fragments and vacuoles that influence their predominantly non-linear mechanical behavior. The results of water absorption by capillarity (C) and ultrasound pulse velocity (UPV) demonstrate a slight anisotropy for the beige variety and near isotropy for white and pink ignimbrites, which justify the randomness of the application of the ashlars in the masonry and in the selection of the faces to carve. Surfaces with hollows in the white and beige ignimbrites are the result of the erosion of the acicular pumice that fills the vacuoles. View Full-Text
Keywords: ignimbrite; petrography; physico-mechanical properties; color; cultural heritage ignimbrite; petrography; physico-mechanical properties; color; cultural heritage
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MDPI and ACS Style

Bustamante, R.; Vazquez, P.; Prendes, N. Properties of the Ignimbrites in the Architecture of the Historical Center of Arequipa, Peru. Appl. Sci. 2021, 11, 10571. https://doi.org/10.3390/app112210571

AMA Style

Bustamante R, Vazquez P, Prendes N. Properties of the Ignimbrites in the Architecture of the Historical Center of Arequipa, Peru. Applied Sciences. 2021; 11(22):10571. https://doi.org/10.3390/app112210571

Chicago/Turabian Style

Bustamante, Rosa, Patricia Vazquez, and Nicanor Prendes. 2021. "Properties of the Ignimbrites in the Architecture of the Historical Center of Arequipa, Peru" Applied Sciences 11, no. 22: 10571. https://doi.org/10.3390/app112210571

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