Ftir Investigation of Pigments and Binder of Painted Walls in Heritage Monuments

Kahrović, Emira; Jakovljevic, Vanja; Zahirović, Adnan

doi:10.46939/j.sci.arts-20.3-b01

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…The demand for lime mixes is slightly lower due to low strength and water resistance [5]. However, lime plaster mixes have a number of advantages: They have good thermal insulation [6] and fireproof [7] properties; environmentally friendly [8]; have good adhesion to wood [9,10], brick [11] and cinder-concrete [12] surfaces; resistant to biological damage due to the high alkalinity of lime [13]; flexible [14] and easy to work with [15]. In addition, they have high vapor permeability [16][17][18], which allows the wall to "breathe" without accumulating condensate [19], thereby contributing to the improvement of the microclimate of the rooms finished with them by regulating the humidity of the environment [20].…”

Section: Introductionmentioning

confidence: 99%

Increase the Performances of Lime Finishing Mixes Due to Modification with Calcium Silicate Hydrates

et al. 2021

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Lime plaster mixes are becoming more and more popular in the world’s building materials market every year. Therefore, the issue of increasing the efficiency of lime finishing coatings is relevant. The paper aim is the modification of lime binders with specially synthesized calcium silicate hydrates (CSHs). To obtain the CSH filler, liquid sodium glass was used with a silicate module of 1.53–2.9 and a density of 1130–1663 kg/m3. Using differential thermal analysis (DTA), X-ray diffraction (XRD) patterns, synthesized calcium silicate hydrates, as well as dry plaster mixes, and finishing coatings based on using them were studied. The regularities of the filler synthesis were established depending on the temperature, density, and silicate modulus of liquid glass, the amount of the precipitant additive, the rate of its introduction, and the drying mode. As a result of processing the obtained experimental data, a mathematical model was obtained for the composition “lime + CSH”. The phase composition of the filler was revealed, which is characterized by the presence of calcium silicate hydrates of the tobermorite group, a solid solution CSH (B) in the form of a weakly crystallized gel, a solid solution of C–S–H (II), hydrohalites, and calcites. It was found that the use of the fillers into the lime compositions, obtained with the rapid introduction of CaCl2 additive into water glass during the synthesis of the filler, promotes the acceleration of the plastic strength gain of lime compositions. It was revealed that the lime composites with the CSH filler are characterized by reduced shrinkage deformations up to 45%. The introduction of the CSH filler into the lime compositions increases the water resistance of the lime finishing layer by 36%. A technological scheme for the production of the lime dry plaster mixes has been developed; it can be introduced at existing factories of building materials without significant re-equipment of production.

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Section: Introductionmentioning

confidence: 99%

Increase the Performances of Lime Finishing Mixes Due to Modification with Calcium Silicate Hydrates

et al. 2021

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Analytical Investigation of Two Socialist Realism Portraits Exposed to High Levels of Humidity. Case Studies from the Historical Museum of Bosnia and Herzegovina

ALIJAGIC,

KAHROVIC,

IBRAGIC

2023

Int J Conserv Sci

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This paper describes the combined use of several analytical methods to characterise the painting technology used in two socialist realism portraits of national heroes from World War II that are now housed in the Historical Museum of Bosnia and Herzegovina. Inspection under UV light has shown that there was no previous retouching or overpainting on either painting. Microchemical tests identified the type of canvas. The radiograms indicated whether pigments with lower or higher atomic masses were used and how well the ground was rubbed among the threads of the canvas. A better penetration of the ground into the canvas and layers of oil dye that were applied to both sides of Painting 1 contributed to its better protection against high humidity. TLC revealed the type of ground on both paintings as a classic chalk-glue ground. The high humidity was responsible for the occurrence of metal soaps on Painting 2, which were confirmed by FTIR. The XRF analysis was used to describe the pigment palette, trace the causes of existing damages, and facilitate retouching. The results of this integrated diagnostic approach were used to optimise the conservation and better understand the features and techniques used in the creation of Bosnian socialistic artwork.

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Ftir Investigation of Pigments and Binder of Painted Walls in Heritage Monuments

Cited by 2 publications

References 26 publications

Increase the Performances of Lime Finishing Mixes Due to Modification with Calcium Silicate Hydrates

Increase the Performances of Lime Finishing Mixes Due to Modification with Calcium Silicate Hydrates

Analytical Investigation of Two Socialist Realism Portraits Exposed to High Levels of Humidity. Case Studies from the Historical Museum of Bosnia and Herzegovina

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