Numer 19/2 (2020)
Redaktorzy: Wojciech Franus, Tomasz Lipecki, Łukasz Borowski, Aleksandra Szczypa
Spis treści
Strony
Pobierz
Olga Kysil,
Raddamila Kosarevska,
Oleksii Levchenko
The innovation of accounting and certification of historic architectural monuments using BIM technology
DOI: 10.35784/bud-arch.888
5 – 18
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Słowa kluczowe

ВІМ | HBIM | ВІМ 4D | the life cycle of a building | information modeling of historical buildings | cultural heritage objects | Allplan software

Streszczenie

Presented research shows Building Information Modeling (BIM) technology as a highly promising tool for architectural heritage conservation. Analyses of contemporary publications by BIM topic and HBIM (Historic Building Information Modeling), its specific division, are conducted. The usage of modern technology analysis for digitizing monuments along with the outdated ‘manual’ of accounting and passportization methods are executed, and a lack of automation of the above processes is observed. Additionally, the research reveals that during the operational period of historical objects, there was no method of fixing their architectural transformations. The necessity of automation of the abovementioned processes by the capabilities of the BIM technology is emphasized. Automation methods developed utilizing the BIM model properties as a relational database, are described. An example of the method implementation in architectural and construction software applications is given. The case uses the rules of filling in the state accounting card of Ukraine. Nonetheless, the automatic formation of a document like this by the standards of any country is underscored.

Afiliacja

1 Kijowski Narodowy Uniwersytet Budownictwa i Architektury, Ukraina
Małgorzata Szafraniec,
Danuta Barnat-Hunek
Evaluation of the contact angle and wettability of hydrophobised lightweight concrete with sawdust
DOI: 10.35784/bud-arch.1644
19 – 32
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Słowa kluczowe

sawdust | lightweight aggregate-concrete | organosilicon compounds | hydrophobisation | contact angle

Streszczenie

The aim of the research presented in the paper was to evaluate the feasibility of using hydrophobic preparations based on organosilicon compounds for protection treatment on the lightweight concrete modified with sawdust. The experimental part of the work concerns the physical and mechanical properties of lightweight concrete and the influence of two hydrophobic agents on the contact angle of the material. Lightweight concrete contact angle (θw) was determined as a time function using one measuring liquid. Water repellent coatings in lightweight concrete structure with the coarse aggregate sawdust (CASD) using electron microscopy were presented. The effectiveness of hydrophobisation of porous lightweight concretes was determined on the basis of the research. For the hydrophobic surface, the contact angle decreased and it depended on the used agents. The lowest contact angle of 40.2° (t=0) was obtained for reference concrete before hydrophobisation and 112.2° after hydrophobisation with a methyl-silicone resin based on organic solvent. The results of scientific research confirm the possibility to produce lightweight concretes modified with CASD with adequate surface protection against external moisture.

This work was partially financially supported by the Polish Ministry of Science and Higher Education within the statutory research numbers FN14/ILT/2019.

Afiliacja

1 Politechnika Lubelska
Marta Dudek
Self-healing cement materials – microscopic techniques
DOI: 10.35784/bud-arch.1494
33 – 40
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Słowa kluczowe

optical microscopy | scanning electron microscopy | tensile stage | self-healing cementitious materials | micro-mechanical properties

Streszczenie

The article presents a general classification of intelligent materials with self-healing (self-repairing) properties, focusing on self-healing cementitious materials. The purpose of the paper is to describe the prospects of two of the most popular micro-observation techniques, i.e. with the use of an optical and scanning electron microscope. In addition, it describes the advantages of using a tensile stage mounted in the microscope chamber for testing self-healing materials. The advantages and disadvantages of these devices have been characterized, and the results of preliminary research have been provided. The tests include the optical microscopy and scanning electron microscopy observations of the microstructure of cracks before and after the process of healing. They were carried out using ZEISS Discovery V20 optical microscope and ZEISS EVO-MA 10 scanning electron microscope on mortar samples modified with macro capsules filled with polymer. In addition to observations, chemical analysis was performed with the use of an EDS detector. The microscopic observations and chemical analyses provide the basis for assessing the effectiveness of the self-healing process, showing that the crack has been healed. Moreover, the preliminary results of the tests of micro-mechanical properties, carried out with the use of a tensile stage, have been described. The problems of using this research technique are also listed. This study shows the usefulness of this kind of tests for microcapsules for self-healing materials.

Afiliacja

Politechnika Krakowska im. Tadeusza Kościuszki
Zoriana Lukomska,
Halyna Lukomska,
Iryna Shevchuk
Program of fragmentary revitalization of the historical town of Lyashky Murovani. Murovane Village, Staryi Sambir district in the Lviv Region
DOI: 10.35784/bud-arch.760
41 – 52
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Słowa kluczowe

historical town | historical planning structure | valuable urban object | palace and park complex | Lyashky Murovani

Streszczenie

The research uncovers the value and uniqueness of the volumetric planning structure of the historical town of Lyashky Murovani, now known as Murovane Village, Staryi Sambir district in the Lviv region.

Within the town features of Baroque urban planning are found and characteristics of the historical urban development of the location are revealed. The current components of the volumetric and spatial composition of the former city are analysed. A reconstruction scheme of the 17th-century city planning structure was presented, when it consisted of a market square with residential buildings blocks, sacral objects, and a palace and park complex. The study also reveals that the urban object passed through several stages of reconstruction during its development. A fragmentary revitalization program of the historical town into a modern village of Murovane was proposed.

Afiliacja

1 Iwano-Frankiwski Narodowy Techniczny Uniwersytet Nafty i Gazu, Ukraina
Piotr Kryczka,
Katarzyna Chrobak
Contemporary challenges of spatial development of local service centres in the suburban areas of Wrocław – example of Czernica, Poland
DOI: 10.35784/bud-arch.1678
53 – 72
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Słowa kluczowe

spatial policy | rural areas | suburban neighbourhoods | spatial accessibility | network analysis

Streszczenie

The residential anthropopressure in the areas around large urban centres has become an irrefutable fact. According to many analysts, the suburban development is not related to rational land-use, focused on shaping multifunctional settlement units. The paper is a study of a selected case of spatial development of a service function in the suburban area of Wrocław. The article presents the literature on the subject of building systems of service centres, as well as the analysis of planning documents of the Czernica municipality, including their correlation with higher-order planning studies. As a consequence of the above, the spatial structure of the municipality and potential development possibilities of the service centres system were analysed. For this purpose, GIS analyses (in particular, the analysis of building density or spatial accessibility analysis) were carried out. The research constituted an important starting point for shaping guidelines in the area referring to establishing a hierarchical system of service centres. This led to the further debate on shaping the spaces for integration of rural residents connected to local service centres.

Afiliacja

1 Politechnika Wrocławska
Katarzyna Rzeszut,
Ilona Szewczak,
Patryk Różyło
FEM model versus laboratory test of thin-walled steel beams strengthened by CFRP tapes
DOI: 10.35784/bud-arch.1671
73 – 86
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Słowa kluczowe

steel thin-walled cold-formed beam | CFRP tape | strengthening

Streszczenie

The main aim of the study is to develop the best-suited FEM numerical model of beams made of thin-walled cold-rolled steel profiles retrofitted by CFRP tapes. The FEM model fitting has been carried out based on own laboratory tests conducted on Σ type beams. The CFRP tapes are bonded to the beam at compressed or tensioned flange. The most important part of this study is focused on the investigation of boundary conditions influence in FEM model developed in Abaqus program. Moreover, the numerical models are also tested in terms of different mesh density and type of finite elements. Numerical analyses are carried out using a Newton-Raphson iterative method to solve the non-linear equilibrium equation. In the paper, special attention is paid to the evaluation of the possibility to increase the load capacity by appropriate localisation of CFRP tape.

Financial support by the “Młoda Kadra” Lublin University of Technology, DS grant 01/11/DSPB/0006 PUT, company “Blachy Pruszyński” and “SIKA” is kindly acknowledged.

Afiliacja

1 Politechnika Poznańska
2 Politechnika Lubelska
Jakub Gontarz,
Jacek Szulej
Report on laboratory tests of sandstone and porphyry for rock fracture analysis
DOI: 10.35784/bud-arch.1540
87 – 100
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Słowa kluczowe

sandstone | porphyry | laboratory tests | fracture mechanics

Streszczenie

The paper presents the results of mechanical tests of three types of rocks from Polish stone mines. Compression tests of cubic samples, three-point bending tests of beams, bending of beams with a notch, and testing of tensile strength using the quasi-Brazilian method were performed. Based on the tests, the compressive strength, tensile strength, Young’s modulus, and Poisson’s ratios were determined. The stress intensity factor and critical strain energy release rate in mode I were determined from the bending test of the notched beams. The determined values were used as parameters of computer models, which allowed to verify the authors’ method of predicting the crack propagation in the Abaqus FEA system.

This research was sponsored by the Lublin University of Technology Science Financing Subsidy FN16/ILT/2020

Afiliacja

1 Politechnika Lubelska
Joanna Witkowska-Dobrev,
Olga Szlachetka,
Paulina Spiek
Impact of curing conditions for concrete on its mechanical properties
DOI: 10.35784/bud-arch.1672
101 – 110
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Słowa kluczowe

compressive strength | concrete care | Portland cement | pozzolanic cement

Streszczenie

This paper aims to present the results of compressive strength tests of concrete specimens, prepared according to two recipes, after 2, 7 and 28 days of maturing in four different environments. The concrete specimens had the same w/c ratio, the same amount of aggregate of particular fractions, the addition of a superplasticizer, but they differed in the cement type. In one recipe, the Portland cement CEM I 32.5R was used, in the other – pozzolanic ash cement CEM IV/B(V) 32.5R-LH/NA. Concrete specimens with dimensions of 100 x 100 x 100 mm made according to both recipes were placed in individual ripening environments: in cuvettes with water, soaked and wrapped with construction foil, left in room conditions in the laboratory, placed outside the laboratory and being exposed to the atmospheric conditions. The obtained compressive strength results confirmed that the best way of curing concrete is the wet cure (in cuvettes with water). It has been proven that the choice of proper curing method is key in terms of compressive strength.

Afiliacja

1 Szkoła Główna Gospodarstwa Wiejskiego w Warszawie
Maciej Tomasz Solarczyk
Geometry of the cycling track
DOI: 10.35784/bud-arch.1621
111 – 120
PDF

Słowa kluczowe

geometry of cycling track | track cycling | transition curve

Streszczenie

The paper describes the problems related to shaping of the geometry of the cycling track. The method of selection of the angle at the track curve is presented. Issues related to the selection of the appropriate transition curve and the superelevation section along the transition curve are presented. Reference to the recommendations presented in the literature and scientific papers has been made. Special attention to the need of consideration of the subjective feelings of the cyclist is paid. The paper describes the guidelines of the International Cycling Union (UCI) on shaping the geometry of the cycling track.

Afiliacja

Politechnika Gdańska
Elżbieta Kaczmarska
Contemporary symbols in the space of Baku
DOI: 10.35784/bud-arch.2166
121 – 136
PDF

Słowa kluczowe

history | symbols | form | Flame Towers | construction boom | urban space | public space | contemporaneity|
futuristic vision | Baku | Azerbaijan

Streszczenie

When performing even a cursory analysis of the visual image of contemporary Baku, the capital of Azerbaijan, one simply cannot ignore its ancient history, the political influence of nearby powers and the almost age-old dependence on Soviet Russia. The regaining of independence in 1991, associated with the policy of then-national leader Heydar Aliyev, stimulated the young country’s ambition to open up to the world and organise an international cultural event. The preparation for the Eurovision Song Contest in 2012 initiated another construction boom in the history of Baku, fuelled with petrodollars, and became an occasion to present a new vision of the capital. In the years 2007–2012, numerous new cultural, artistic and sports buildings were constructed and which are now a hallmark and symbol of contemporary Baku. One such building, which creates a new, futuristic city space and is presented in the article, is the Heydar Aliyev Centre, a centre of art and museum designed by Zaha Hadid. The author notes the creative intent, external appearance and structure of the building, as well as new means of expression in creating place-based ambience. Also noted were the use of contemporary art in the creation of attractive utilitarian spaces. Other presented buildings display the ages-old symbols of the ‘Land of Fire’ in a new way and are embedded into the contemporary panorama of the city.

Afiliacja

Krakowska Akademia im. Andrzeja Frycza Modrzewskiego
Pobierz cały numer
1 – 136
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Politechnika Lubelska
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