Study of mineralogical, chemical and geotechnical properties of the historic materials for restoration of the Kutubiyya Mosque

The preservation of built heritage represents a cultural and scientific challenge of great significance, particularly as many historical monuments in Morocco have suffered extensive deterioration. Given that the renovation of facade and interior plasters is among the most common tasks in restoration...

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Main Authors: Abdelmalek Ammari, Samir Ait Oumghar, Mounsif Ibnoussina, Jamal Mounaji, Mohsine Ziani
Format: Article
Language:English
Published: University of Bologna 2025-07-01
Series:Conservation Science in Cultural Heritage
Subjects:
Online Access:https://conservation-science.unibo.it/article/view/22455
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author Abdelmalek Ammari
Samir Ait Oumghar
Mounsif Ibnoussina
Jamal Mounaji
Mohsine Ziani
author_facet Abdelmalek Ammari
Samir Ait Oumghar
Mounsif Ibnoussina
Jamal Mounaji
Mohsine Ziani
author_sort Abdelmalek Ammari
collection DOAJ
description The preservation of built heritage represents a cultural and scientific challenge of great significance, particularly as many historical monuments in Morocco have suffered extensive deterioration. Given that the renovation of facade and interior plasters is among the most common tasks in restoration projects, it is crucial to analyze the composition of stones and plasters to ensure the compatibility of materials and their effective interaction with the substrate. In this context, our study focuses on characterizing the stone and plaster from the enclosure of the Kutubiyya Mosque in Marrakech, as well as the materials used in its restoration. To achieve this, we applied mineralogical, chemical, and petrographic characterization methods, including X-ray diffraction (XRD), X-ray fluorescence (XRF), and petrographic analysis. The masonry stone of the Kutubiyya Mosque has been identified as a marly limestone with properties characteristic of hard rocks. The primary exterior plaster is composed of lime and silty sand, with a proportion of gypsum added to accelerate the setting process. X-ray diffraction analysis revealed the presence of crystalline phases in the original masonry stone, such as calcite, clays, quartz, and dolomite. Additionally, X-ray fluorescence analysis identified the major chemical elements in the plaster. These findings reveal notable differences in the chemical composition of the original and restoration materials, highlighting their influence on the quality and durability of the restoration efforts at the Kutubiyya Mosque.
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publishDate 2025-07-01
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spelling doaj-art-0e72ce962ce84daebb1fc75e8a23cd692025-08-20T03:56:46ZengUniversity of BolognaConservation Science in Cultural Heritage1974-49511973-94942025-07-01249711310.6092/issn.1973-9494/2245520840Study of mineralogical, chemical and geotechnical properties of the historic materials for restoration of the Kutubiyya MosqueAbdelmalek Ammari0Samir Ait Oumghar1Mounsif Ibnoussina2Jamal Mounaji3Mohsine Ziani4Dept of physics, Mohamed V University, Rabat, Morocco; National School of Architecture of Marrakech, Morocco; Faculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, MoroccoFaculty of arts and humanities, Cadi Ayyad University, Marrakech, MoroccoFaculty of Sciences Semlalia, Cadi Ayyad University, Marrakech, MoroccoNational School of Architecture of Marrakech, MoroccoInstitut National des Sciences de l’Archéologie et du Patrimoine (INSAP)/Rabat, MoroccoThe preservation of built heritage represents a cultural and scientific challenge of great significance, particularly as many historical monuments in Morocco have suffered extensive deterioration. Given that the renovation of facade and interior plasters is among the most common tasks in restoration projects, it is crucial to analyze the composition of stones and plasters to ensure the compatibility of materials and their effective interaction with the substrate. In this context, our study focuses on characterizing the stone and plaster from the enclosure of the Kutubiyya Mosque in Marrakech, as well as the materials used in its restoration. To achieve this, we applied mineralogical, chemical, and petrographic characterization methods, including X-ray diffraction (XRD), X-ray fluorescence (XRF), and petrographic analysis. The masonry stone of the Kutubiyya Mosque has been identified as a marly limestone with properties characteristic of hard rocks. The primary exterior plaster is composed of lime and silty sand, with a proportion of gypsum added to accelerate the setting process. X-ray diffraction analysis revealed the presence of crystalline phases in the original masonry stone, such as calcite, clays, quartz, and dolomite. Additionally, X-ray fluorescence analysis identified the major chemical elements in the plaster. These findings reveal notable differences in the chemical composition of the original and restoration materials, highlighting their influence on the quality and durability of the restoration efforts at the Kutubiyya Mosque.https://conservation-science.unibo.it/article/view/22455kutubiyyastonecoatingrestorationphysico-chemical analysis
spellingShingle Abdelmalek Ammari
Samir Ait Oumghar
Mounsif Ibnoussina
Jamal Mounaji
Mohsine Ziani
Study of mineralogical, chemical and geotechnical properties of the historic materials for restoration of the Kutubiyya Mosque
Conservation Science in Cultural Heritage
kutubiyya
stone
coating
restoration
physico-chemical analysis
title Study of mineralogical, chemical and geotechnical properties of the historic materials for restoration of the Kutubiyya Mosque
title_full Study of mineralogical, chemical and geotechnical properties of the historic materials for restoration of the Kutubiyya Mosque
title_fullStr Study of mineralogical, chemical and geotechnical properties of the historic materials for restoration of the Kutubiyya Mosque
title_full_unstemmed Study of mineralogical, chemical and geotechnical properties of the historic materials for restoration of the Kutubiyya Mosque
title_short Study of mineralogical, chemical and geotechnical properties of the historic materials for restoration of the Kutubiyya Mosque
title_sort study of mineralogical chemical and geotechnical properties of the historic materials for restoration of the kutubiyya mosque
topic kutubiyya
stone
coating
restoration
physico-chemical analysis
url https://conservation-science.unibo.it/article/view/22455
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AT mounsifibnoussina studyofmineralogicalchemicalandgeotechnicalpropertiesofthehistoricmaterialsforrestorationofthekutubiyyamosque
AT jamalmounaji studyofmineralogicalchemicalandgeotechnicalpropertiesofthehistoricmaterialsforrestorationofthekutubiyyamosque
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