A5000498689- Building materials and conservation
- Cultural Heritage Materials Analysis
- Conservation Techniques and Studies
- Mineralogy and Gemology Studies
- Ancient Mediterranean Archaeology and History
- 3D Surveying and Cultural Heritage
- Concrete and Cement Materials Research
- Freezing and Crystallization Processes
- Calcium Carbonate Crystallization and Inhibition
- Ancient and Medieval Archaeology Studies
- Dental materials and restorations
- Recycling and utilization of industrial and municipal waste in materials production
- Bone Tissue Engineering Materials
- Satellite Image Processing and Photogrammetry
- Cultural Industries and Urban Development
- Metallurgy and Cultural Artifacts
- Pigment Synthesis and Properties
- Archaeological Research and Protection
Valahia University of Targoviste
2011-2020
University of Bucharest
2009
Carbonated hydroxyapatite derivatives (CHAp) and its metallic (Ag, Sr, Ba, K, Zn) have been prepared characterized in this paper their coating capacity on some model stone samples evaluated discussed. These compounds were by using several analytical tools, including X-ray diffraction analysis (XRD), thermogravimetric (TGA), Fourier transform infrared spectroscopy (FTIR), to determine the purity of CHAp sample. The XRD FTIR results confirmed presence AB-carbonated type CHAp. thermal (TGA)...
Abstract The archaeometric study of some samples from New gate Tower Corvins’ Castle are analyzed in this paper order to identify the raw materials nature and weathering / deterioration processes these artifacts. Modern analytical techniques, as XRD, FTIR, Raman, SEM-EDS, colorimetry, porosimetry, thermal analysis used evaluate structure chemical composition (quartz, mica, dolomite, feldspar plagioclase albite microcline minerals). Some minerals similar with apatites have been evidenced...
Historical monuments suffer different forms of degradation, due to some improper works on architecture structure, vibrations caused by blasting, traffic, the inadequate restoration, phenomenon freeze-thaw, air pollution, humidity and temperature variations, friable mortar, deposits adhering impurities (dust, smoke, tar), soluble efflorescence, poorly or insoluble salts (nitrate, sulfate, chloride, carbonate), action microorganisms. Nowadays, nanomaterials represent an alternative in...
In this paper, the presence of calcium oxalate on calcareous stone, is studied. The patina consists mainly which exists in three forms: monohydrated whewellite (small, smooth, globular yellow-green to brown crystals radial fibrous) (COM), dehydrated weddelite (small crystals, and spherical clusters plaques consisting or yellow platelets, are sharp) (COD) trihydrate caoxite (rarely observed, as mono dihydrated precursor forms)(COT). Scanning electron microscope with Energy Dispersive X-ray...
Abstract Nowadays, a better understanding of the factors (including environmental) that influence degradation materials from different buildings and monuments, is absolutely necessary. In this paper some analytical techniques, as Fourier Transformed IR Spectroscopy (FTIR), X-ray diffraction (XRD), fluorescence (XRF), optical microscopy (OM) SEM-EDS, have been used for evaluation structure chemical composition characterization products, causes mechanisms disintegration / aging processes. Few...
The monument buildings as components of cultural heritage are exposed to degradation surfaces and chemical mechanical degradation, often associated soiling irreversible deterioration the building. In many conservative restorative works, a cement-based mortar was used without knowing all adverse effects this material on This paper deals with study natural cement in works particular case Basarabi-Murfatlar Churches Ensemble. Cement-based materials sulfate present chalk stone - gypsum...
A multidisciplinary study on the mortars from Corvins' Castle, Hunedoara, Romania has been carried out two ceramic samples which were analyzed through spectral techniques (FTIR, Raman, X-ray powder diffraction) and diverse microscopy (optical, scanning electron microscopy), for determining chemical, mineralogical petrographic characteristics tiles coming Castle discovered during archaeological campaign 2012, at Administrator's House, inside of castle yard; results are presented in order to...
Knowledge of the chemical composition building materials monuments may help us to preserve and protect them from pollution our cities. The aim this work is characterize walls ancient buildings, decay products that could be appear due action a new method based on nanomaterials (hydroxyapatite -HAp) for conservative preservation treated walls. Some analytical techniques have been used, as follow: X-ray fluorescence energy dispersive (EDXRF) (for relative abundance major, minor trace elements),...
The paper deals with 3D scanning techniques and instruments to survey the complex stuccoes from architectural building Nanu-Muscel Bucharest. EXAscan Portable Laser Scanner has been used exploit advantages of surveying produce digital models other geometric representations useful for protection historic architectures a correct solution their restoration. After parameterization, two stucco-objects surface yielded network points. program analyzes points joins them, so final result being...
In the last years issue of conservation and preservation cultural heritage has gained high interest both in scientific research restoration various monuments from universal heritage.The aim this paper is presentation hydroxyapatite as a non-toxic environmentally friendly nanomaterial that could be involved (chalk, marble or travertine), results obtained after applying it on these surfaces.Some analytical investigations are used to detect changes structure colour surfaces where had been...
In the light of recent concerns in assessment new conservation treatments and development application methodologies, technologies, models tools for CH damage assessment, this paper will deal with some innovative topics related to digital protecting cultural heritage assets front various damages. Application technologies digitalization Basarabi monument is a preventive measure, helping us build virtual reconstructions as model its potential reconstruction preserving, give access widest...