scholarly journals ORGANO-INORGANIC BINDERS FOR REPAIR AND RESTORATION OF TOWER TYPE HISTORY AND CULTURE MONUMENTS

2021 ◽  
Author(s):  
С.Г. Шеина ◽  
Д. К-С. Батаев ◽  
С-А. Ю. Муртазаев ◽  
П.Д. Батаева
Keyword(s):  
Mechanical Properties ◽  
Cultural Heritage ◽  
Physical And Mechanical Properties ◽  
Close Similarity ◽  
Practical Application ◽  
The Republic ◽  
Cultural Heritage Objects ◽  
Cultural Monuments

В статье делается обзор разработанных органо-неорганических составов растворов каменной кладки стен старинных башенных и некропольных строений Чеченской Республики и Республики Ингушетия. Отмечена перспективность практического применения органо-неорганических вяжущих для ремонта и реставрации памятников истории и культуры, благодаря близкому сходству разработанных составов «материнскому», за счет чего они более эффективны и способствуют повышению качества и долговечности. Исходя из анализа физико-механических свойств раствора для каменной кладки стен объектов культурного наследия рекомендованы три состава. The article provides an overview of the developed organic-inorganic compositions of masonry solutions for the walls of ancient tower and necropolis structures of the Chechen Republic and the Republic of Ingushetia. The prospects of the practical application of organic-inorganic binders for the repair and restoration of historical and cultural monuments are noted, due to the close similarity of the developed compositions to the "mother", due to which they are more effective and contribute to improving the quality and durability. Based on the analysis of the physical and mechanical properties of the mortar for the masonry of the walls of cultural heritage objects, three compositions are recommended.

PROBLEMS OF CLASSIFICATION OF CULTURAL HERITAGE OBJECTS

2020 ◽  
Vol 10 (2) ◽  
pp. 158-168
Author(s):  
SVETLANA IVANOVA ◽  
Keyword(s):  
Cultural Heritage ◽  
Cultural Values ◽  
Research Work ◽  
Cultural Property ◽  
Cultural Inheritance ◽  
Federal Laws ◽  
Cultural Heritage Objects ◽  
Cultural Monuments

The purpose of the research work is to analyze the norms of Federal laws, as well as the laws of the Russian Federation's constituent entities, devoted to the definitions and classification of the concepts “cultural heritage”, “historical and cultural monuments”, “cultural values”. Conclusions obtained in the course of the research: based on the study of current legislation, it is concluded that the definitions of “cultural values”, “cultural property”, “objects of cultural inheritance” contained in various normative legal acts differ in content. Based on the research, the author proposes the concept of “cultural values”.

Influence of 6PPD Stabilizer on Climatic Stability of Rubbers Based on Butadiene-Nitrile and Epichlorohydrin Rubbers

2019 ◽  
Vol 945 ◽  
pp. 433-437
Author(s):  
M.D. Sokolova ◽  
A.F. Fedorova ◽  
M.L. Davydova
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Hydraulic Fluids ◽  
Open Ground ◽  
The Republic ◽  
The Stability ◽  
Property Changes ◽  
Full Scale Tests ◽  
Butadiene Nitrile Rubber ◽  
Hydrocarbon Media

The present paper outlines the results of full-scale tests of climatic stability and the study of resistance to the action of hydrocarbon media of rubbers based on BNKS-18-18 (butadiene-nitrile rubber) and Hydrin T6000 epichlorohydrin rubber containing one of 6PPDstabilizerwith an aromatic amine moiety widely used in synthetic rubbers. Samples are exposed in an open ground under natural conditions of exposure to climatic external factors of Yakutsk in the Republic of Sakha (Yakutia), as well as in the oil environment of Talakanskoye field and I-50A hydraulic fluid in an unheated room. Such indexes of the samples as conditional tensile strength, elongation at rupture, hardness and degree of swelling are measured to determine the resistance of rubbers to aging after the first, third, and sixth months of exposing. The results of the study reveal the contribution of 6PPD stabilizer in maintaining the stability of the physical and mechanical properties of BNKS-18: rubber containing 6PPD has less property changes both in the open air and in hydrocarbon media compared to rubber without a stabilizer. It should be noted that the oil environment is the most aggressive environment, the swelling of rubbers in oil leads to a significant reduction in strength due to a decrease in intermolecular interaction.6PPD stabilizer occurred less effective for the rubber based on Hydrin T6000: changes in properties of the samples containing the stabilizer are larger than those of the samples without the stabilizer. However, unlike BNKS-18-18-based rubber, the swelling of rubber based on Hydrin T6000 led to the greatest stability of the physical and mechanical properties in the oil environment compared to the open air and hydraulic fluids.

Study and Application of Salt-Scaling Resistant Admixture in Concrete

2009 ◽  
Vol 405-406 ◽  
pp. 361-366
Author(s):  
Yuan Wang ◽  
Da Li Zhang ◽  
Cui Hong Chen
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Concrete Surface ◽  
Practical Application ◽  
Deicing Salt ◽  
Salt Scaling ◽  
New Type

This paper investigated a new type of admixture which can be used to enhance the resistance of concrete surface to deicing salt deteriorating. Physical and mechanical properties of concrete incorporating this salt-scaling resistant admixture were measured. Practical application on site has proved that this admixture is effective for concrete to resist salt-scaling action.

scholarly journals A new stage in the study of the medieval Solkhat and its districts (Review of the Book: A Code of Monuments of History, Architecture and Culture of the Crimean Tatars. Volume IV. Old Crimea)

2021 ◽  
pp. 261-268
Author(s):  
Vadim V. Maiko ◽  
Keyword(s):  
Cultural Heritage ◽  
The State ◽  
Complete List ◽  
Scientific Center ◽  
The Crimea ◽  
History Of ◽  
The Republic ◽  
Cultural Heritage Objects ◽  
Academy Of Sciences ◽  
First Time

The review considered the next IV Volume of a multi-volume publication: A Code of monuments of history, architecture and culture of the Crimean Tatars, prepared jointly by the Crimean Scientific Center of Sh. Marjani Institute of history of Academy of Sciences of the Republic of Tatarstan, the Department of History of Fevzi Yakubov “Crimean Engineering and Pedagogical University” and the State Hermitage with the involvement of specialists studying the history and archeology of Solkhat. This volume is entirely devoted to the monuments of history, archeology and architecture of Solkhat – Stary Krym and its district of the second half of the XIII-XIX centuries. For the first time in Russian historiography, the most complete list of cultural heritage objects has been collected. All archaeological works were carried out in Solkhat and its district from the second half of the 1920s and up to today. Previously unpublished photographs and drawings are given in the volume. This publication is rightly considered a new stage in the study of this unique historical place of the Crimea.

scholarly journals Directions for preservation and popularization of cultural heritage objects of Crimea peninsula

2020 ◽  
Vol 164 ◽  
pp. 05021
Author(s):  
Victoriia Zhivitsa ◽  
Victoriia Sidorova ◽  
Dmitry Mosyakin
Keyword(s):  
Urban Planning ◽  
Cultural Heritage ◽  
Urban Context ◽  
Protection Zones ◽  
Youth Centers ◽  
Analysis And Synthesis ◽  
The Russian Federation ◽  
Cultural Heritage Objects ◽  
Cultural Monuments ◽  
Crimea Peninsula

“Everyone is obliged to take care of the preservation of historical and cultural heritage, to preserve historical and cultural monuments” (Article 44 of the Constitution of the Russian Federation). The study is aimed at considering the most promising methods of safekeeping, maintenance, popularization and museum presentation of cultural heritage. When working on the study, the methods of theoretical analysis and synthesis and the analogy method were used. The authors have identified and analyzed applied areas of safekeeping, maintenance, popularization and modern use of cultural heritage objects, namely: monuments of archeology, architecture and urban planning. Various techniques for inclusion of such objects in the modern socio-cultural and architectural-urban context were analysed. Criteria are selected for choosing monuments of architecture, urban planning and archeology for museification, as well as for their introduction into the tourist and recreational infrastructure of the region. Also the scenario of attracting the population, in particular youth, to the problem of preservation of cultural heritage objects is considered. The authors propose improvement of territory and construction of modular youth centers, and organization of cultural and entertainment events (festivals, exhibitions, historical quests, thematic fairs, performances) near or in the territory of the monument protection zones.

scholarly journals Characteristics of Medium Density Fiberboards for Furniture Production and Interior Application

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Violeta Jakimovska Popovska ◽  
Borche Iliev ◽  
Ivo Spiroski
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
High Humidity ◽  
Medium Density ◽  
Production Sector ◽  
Republic Of Macedonia ◽  
Dry Conditions ◽  
The Republic ◽  
End Use

BACKGROUND: The paper analyzes the properties of medium density fiberboards (MDF) intended for furniture production and interior application. Because MDF panels are one of the mostly used wood-based panels in furniture production sector in the Republic of Macedonia it is important to know and understand their basic physical and mechanical properties. AIM: For better understanding of MDF panels and their proper end use by the furniture constructors and designers, physical and mechanical properties of MDF panels present in the market are tested.MATERIALS AND METHODS: Commercially produced MDF panels taken from one company from wood-based panel market were tested. Evaluation of the quality of the panels was made on the basis of the obtained results for the physical and mechanical properties of the panels. Properties of MDF were tested according to the national MKS standards and European norms.RESULTS: Tested MDF panels present on our market are characterized by good physical and mechanical properties that meet the requirements of the standards for MDF for use in dry conditions including furniture production and interior applications.CONCLUSIONS: It is recommended to avoid application of these MDF panels in high humidity conditions for a longer exploitation period. For this kind of applications, such as bathroom areas, the furniture constructors and interior designers should consider use of MDF.H type of panel for application in high humidity conditions, which will provide good dimensional stability of the products during whole exploitation period.

Study and Application of Salt-Scaling Resistant Admixture in Concrete

2006 ◽  
Vol 302-303 ◽  
pp. 105-110 ◽  
Author(s):  
Yuan Wang ◽  
Bin Liu
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Concrete Surface ◽  
Practical Application ◽  
Deicing Salt ◽  
Salt Scaling ◽  
New Type

This paper investigated a new type of admixture which can be used to enhance the resistance of concrete surface to deicing salt deteriorating. Physical and mechanical properties of concrete incorporating this salt-scaling resistant admixture were measured. Practical application on site has proved that this admixture is effective for concrete to resist salt-scaling action.

scholarly journals Effect of environmental conditions on the durability of polycarbonate for the protection of cultural heritage sites

2019 ◽  
Vol 17 (4) ◽  
pp. 228080001988162
Author(s):  
Laura Ascione ◽  
Maria Chiara Mistretta ◽  
MariaPia Pedeferri ◽  
Francesco Paolo La Mantia
Keyword(s):  
Mechanical Properties ◽  
Molecular Weight ◽  
Cultural Heritage ◽  
Physical And Mechanical Properties ◽  
Oxidation Reactions ◽  
Yellowness Index ◽  
Photo Oxidation ◽  
Heritage Sites ◽  
Degradation Temperature ◽  
Moisture Conditions

Polycarbonate is a good material for covering and protecting cultural heritage sites because of its durability, mechanical properties, and transparency. However, polycarbonate degrades under environmental weathering with a significant decrease of physical and mechanical properties and loss of transparency. In this work, the contemporary presence of ultraviolet irradiation and different temperature and moisture conditions have been taken into account to study the environmental degradation of this polymer with regard to its mechanical and optical properties. The photo-oxidation reactions cause a decrease in the molecular weight and the formation of many oxygenated species. The hydrolytic scission, instead, gives rise to a remarkable reduction in the molecular weight. These two different degradation mechanisms do not seem interconnected because at the lowest degradation temperature and high humidity levels, the reduction of the molecular weight is more pronounced than that observed at the highest temperature but at a lower humidity level. Transparency decreases with the degradative processes, but even after severe degradation the loss of transparency is only about 10%. The yellowness index increases during the first stages of degradation, which has been attributed to the fast formation of carbonyl groups due to photo-oxidation.

scholarly journals Mechanical Characterization of Iroko Wood Using Small Specimens

Buildings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 116
Author(s):  
Carlos Cunha ◽  
Marina Tenório ◽  
Daniel F. Lima ◽  
Arthur Rebouças ◽  
Luís C. Neves ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Mechanical Characterization ◽  
Direct Method ◽  
Physical And Mechanical Properties ◽  
Ultrasonic Waves ◽  
Bending Properties ◽  
Republic Of The Congo ◽  
The Republic ◽  
Speed Of Propagation ◽  
Tropical Woods

Despite their favorable physical and mechanical properties for structural use, tropical woods, such as Iroko (Milicia excelsa), present knowledge gaps to be filled mainly about their mechanical characterization, which currently limit their use or result in under- or overdimensioned structural elements. Visual classification, one of the most used methods for characterizing wood, is inaccurate in the case of Iroko due to the wide variety of geographical locations in which this species can be found. In addition, mechanical characterization using test pieces with structural dimensions leads to high and impractical costs. In this context, this study aims to verify the mechanical properties of Iroko (imported from the Republic of the Congo) from small size specimens, a process that is currently standardized only for softwoods, and to verify the correlation of different properties through bending properties and ultrasound tests. Prior to the bending tests, the speed of propagation of ultrasonic waves was measured using the direct method. The results obtained show a good correlation between density and bending properties and the velocity of propagation of ultrasonic waves.

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