Deterioration analysis of building calcarenite stone in the House of Venus in the archaeological site of Volubilis (Morocco)

Aalil, Issam; Beck, Kévin; Brunetaud, Xavier; Cherkaoui, Khalid; Chaaba, Ali; Al-Mukhtar, Muzahim

doi:10.1016/j.conbuildmat.2016.09.005

Cited by 23 publications

(8 citation statements)

References 46 publications

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“…The whole perception of the biocolonizers and their effects enables the development of better intervention approaches to conduct the preservation of stone structures, prevent the loss of their aesthetic and historical value and structural integrity, benefiting both cultural and economic aspects (Aalil et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

Assessment of microbiota present on a Portuguese historical stone convent using high‐throughput sequencing approaches

et al. 2020

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The study performed on the stone materials from the Convent of Christ revealed the presence of a complex microbial ecosystem, emphasizing the determinant role of microorganisms on the biodecay of this built cultural heritage. In this case study, the presence of Rubrobacter sp., Arthrobacter sp., Roseomonas sp., and Marinobacter sp. seems to be responsible for colored stains and biofilm formation while Ulocladium sp., Cladosporium sp., and Dirina sp. may be related to structural damages. The implementation of high‐throughput sequencing approaches on the Convent of Christ's biodecay assessment allowed us to explore, compare, and characterize the microbial communities, overcoming the limitations of culture‐dependent techniques, which only identify the cultivable population. The application of these different tools and insights gave us a panoramic view of the microbiota thriving on the Convent of Christ and signalize the main biodeteriogenic agents acting on the biodecay of stone materials. This finding highlighted the importance of performing metagenomic studies due to the improvements and the reduced amount of sample DNA needed, promoting a deeper and more detailed knowledge of the microbiota present on these dynamic repositories that support microbial life. This will further enable us to perform prospective studies in quarry and applied stone context, monitoring biogenic and nonbiogenic agents, and also to define long‐term mitigation strategies to prevent biodegradation/biodeterioration processes.

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Section: Resultsmentioning

confidence: 99%

Assessment of microbiota present on a Portuguese historical stone convent using high‐throughput sequencing approaches

et al. 2020

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“…This water moves to stones through the capillary feature with a high percentage of salts that form salt crusts rich in C, NO 3 , SO 4 , Na, Mg, Ca, and K on stones' surface or within the pores, causing internal stress, which, in turn, cause stone bleeding [12]. By evaluating the results of AAS, tab (1), it can be noted that the main components of salt type (Na + & Cl − ) were absent in XRD data due to the continuous leaching of salts by the effects of ambient groundwater or the partial evaporation of Na + , and Cl − emission [32]. The wall of Amenhotep II temple contains the highest level of K + , Na + and TDS values due to the precipitation of aphthitalite and thenardite within the pores of the sandstone.…”

Section: Discussionmentioning

confidence: 99%

The Stone Bleeding Phenomenon Affecting Some Sandstone Inscriptions in the Karnak Temples

El-Gohary

Mosalem²,

Redwan³

2022

Egyptian Journal of Archaeological and Restoration Studies

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Stone bleeding affecting the sandstone artifacts is considered one of the most deterioration forms that dominated the Karnak temples complex. This symptom is a serious deterioration form resulting essentially due to losing the binding material of the stone as a result of the synergistic deterioration factors and their related mechanisms (witting/drying & heating/cooling) cycles. This form is composed of an external hard crust with weak interior components that can be loosed by scratching, causing the bleeding of quartz grains. Some analytical techniques were used, such as SEM-EDX, XRD, and AAS, to define the main essence of this symptom and understand the chemical and mineralogical components. The main results of this study showed that stone bleeding is formed essentially by environmental deterioration factors, especially saline groundwater that causes the weakening of the interior components of the stone and dissolving the binding of its materials.

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“…Thermal dilation was fulfilled using an LINSEIS, TMA PT1000 for twenty specimens (Table 3) [24]. The thermal dilation can be determined through subjection of the specimen to various temperatures of 20, 40 and 60 °C.…”

Section: Thermal Conductivity and Dilationmentioning

confidence: 99%

Impact of Tufa Stone Powder as a Partial Replacement of Aggregate on the Mechanical Performance and Durability of Repair Mortar

Al-Omari

Abdulkareem

Aldaood

et al. 2022

Period. Polytech. Civil Eng.

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The rehabilitation and reconstruction works are usually performed with a view to conserving these landmarks and maintaining them culturally, architecturally and structurally. From this perspective, the mortars utilized in these repairs must be suitable, physiochemically and mechanically, to the ancient materials used in these buildings. Accordingly, it was proposed to evaluate tufa stone powder, a waste product of one of the most widely found stones in the Loire Valley in France, as an ingredient in repair-work mortar mixtures (M1, M2) through partially replacing the fine aggregate it contains with different amounts of this powder (37%, 42%) by weight of mix. Additionally, a third manufacturing mortar (M3) was utilized with both prepared mortars (M1, M2) for comparison with the tufa stone. The mechanical properties (including flexural, compressive and shear strengths, and ultrasonic pulse velocity) and the durability properties (total porosity, thermal dilation and conductivity, capillary absorption, and water and gas permeability) of the three mortars were examined in addition to those of the tufa stone. The results revealed that the prepared mortar, M2, (having lower binder content and a higher amount of substitution with tufa stone powder) has the lowest mechanical performance in comparison with the other mortars, indicating that this mortar is more supple and loose than the authentic tufa masonry. The thermal and durability properties are comparable to that of the tufa stone existent in ancient monuments. Consequently, the prepared mortar (M2) is the most appropriate mortar, for utilization in repairing old landmarks in the Loire Valley in France.

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Deterioration analysis of building calcarenite stone in the House of Venus in the archaeological site of Volubilis (Morocco)

Cited by 23 publications

References 46 publications

Assessment of microbiota present on a Portuguese historical stone convent using high‐throughput sequencing approaches

Assessment of microbiota present on a Portuguese historical stone convent using high‐throughput sequencing approaches

The Stone Bleeding Phenomenon Affecting Some Sandstone Inscriptions in the Karnak Temples

Impact of Tufa Stone Powder as a Partial Replacement of Aggregate on the Mechanical Performance and Durability of Repair Mortar

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