Procés de carbonatació en la pintura al fresc amb morters calcítics i dolomítics

Núria Oriols Pladevall; Nati Salvadó Cabré; Salvador Butí Papiol; Trinitat Pradell i Cara

doi:10.55437/unicum.305

No. 23 (2024)

Pintura

27-50

The carbonation process in fresco painting with calcitic and dolomitic mortars

Núria Oriols Pladevall | Museu Nacional d'Art de Catalunya
Nati Salvadó Cabré | Universitat Politècnica de Catalunya
Salvador Butí Papiol | Universitat Politècnica de Catalunya
Trinitat Pradell i Cara | Universitat Politècnica de Catalunya

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Published

2025-02-18

DOI: https://doi.org/10.55437/unicum.305

Abstract

The process of carbonation in a fresco painting follows the same processes as it does in biogenic systems. It starts with the formation of hydrated amorphous calcium carbonate, CaCO3·nH2O, which stabilises on the surface of the paintings, both in calcitic and dolomitic mortars, and in the interior transforms into calcite, or calcite and aragonite if the mortar is dolomitic. In dolomitic mortars, magnesium hydroxide does not react with the CO2 while there is still calcium hydroxide to carbonate. As a result, they are more reactive mortars
in the long term

Supporting agencies:

This research didn't have any funding

Keywords:

mural painting, fresco, carbonation, calcitic mortar, dolomitic mortar, ACC amorphous calcium carbonate, portlandite, brucite

How to Cite

Oriols Pladevall, N., Salvadó Cabré, N., Butí Papiol, S., & Pradell i Cara, T. (2025). The carbonation process in fresco painting with calcitic and dolomitic mortars. UNICUM, (23), 27–50. https://doi.org/10.55437/unicum.305

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