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Wyszukujesz frazę "geomaterial" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Investigation of the Physical, Mechanical and Aesthetic Characteristics of Terrazo Tiles Obtained from Different Rock Aggregates
Autorzy:
Çoşkun, Canberk
Rızaoğlu, Tamer
Powiązania:
https://bibliotekanauki.pl/articles/2064771.pdf
Data publikacji:
2020
Wydawca:
STE GROUP
Tematy:
tile
geomaterial
aesthetic properties
physico-mechanical tests
Opis:
Throughout history, people have covered the floors of the buildings with materials such as carpet, rock pieces, wood, mosaic, ceramic and tile according to the conditions of the day due to their desire to protect them from moisture, make them hygienic environment easy to clean and give an aesthetic appearance. The merging of mechanization with cement based materials with the industrial revolution in the 19th century has brought along the development of diversity and different production methods in these floor covering materials. One of these coating materials is terrazo tiles that form the subject of the current paper. Terrazo tiles are materials obtained by pressing the mortar obtained by mixing water, cement, marble powder and aggregate in certain proportions. Within the scope of this research, it was aimed to provide alternative raw materials to the tile body and to transform the rock pieces, which are found in waste form in natural stone workshops, into the economy. For this purpose, geomaterials collected from magmatic, metamorphic and sedimentary rocks cropped in the Kahramanmaraş-Antakya-Elazığ regions and natural stone workshops operating in Kahramanmaraş city, were classified according to their geological origins and aggregates of 4.75-12 mm were obtained with the help of jaw crushers and sieves. Tiles have been produced in accordance with the method of tile production from sized aggregates. The produced tiles were kept in the water pool for 28 days and surface controls were made. According to the physical and mechanical test results applied to the tile samples, water absorption by weight is 5.31-13.25%, bending strength 4.95-8.89 MPa, Böhme abrasion resistance 1.09-3.43 cm3 /50 cm2 , mass loss after freeze-thaw is observed to be in the range of 0.97-1.59%. On the other hand, the surface roughness of the tiles prepared with coarse rock aggregates was found to be relatively lower than the tile samples obtained with fine grained rock aggregates. The obtained results indicate that the geomaterials subject to the research can be used as an alternative raw material source in tile production and these raw materials will provide new benefits to the construction field.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2020, 3, 1; 477--490
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Warunki stanu granicznego dla ośrodków rozdrobnionych
Failure criteria for geomaterials
Autorzy:
Dołżyk, K.
Powiązania:
https://bibliotekanauki.pl/articles/402601.pdf
Data publikacji:
2011
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
ośrodek rozdrobniony
stan graniczny
naprężenie
wytrzymałość
warunek Coulomba-Mohra
failure criteria
geomaterial
Mohr-Coulomb criterion
Opis:
W latach 60-tych ubiegłego wieku zaproponowano wiele warunkow stanu granicznego dla ośrodkow rozdrobnionych. Większość warunków uwzględnia wpływ pośredniego naprężenia głównego na wytrzymałość i przyjmuje liniową zależność wytrzymałości od wartości średniego ciśnienia. Przyjmując że wytrzymałość ośrodka rozdrobnionego nie zależy od pośredniego naprężenia głównego, wytrzymałość ośrodka rozdrobnionego może być określona warunkiem Coulomba-Mohra o dwoch parametrach: kohezji c i kącie tarcia wewnętrznego. Ze względu na swoją prostotę warunek Coulomba-Mohra jest najczęściej wykorzystywany w praktyce inżynierskiej.
Many failure criteria were proposed for geomaterials in the sixties of the 20th century. In most of them the influence of middle main stress is neglected and linear influence of hydrostatic pressure on failure is assumed. The most popular and simplest is the Mohr-Coulomb criterion of failure with two material failure parameters: angle of friction and cohesion c. The Mohr-Coulomb criterion is most often used in engineering practice.
Źródło:
Budownictwo i Inżynieria Środowiska; 2011, 2, 2; 123-128
2081-3279
Pojawia się w:
Budownictwo i Inżynieria Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Thermo-physical characteristics of acrylic-based building external isolation panels produced from different geological materials
Autorzy:
Karataş, M. Z.
Rizaoğlu, T.
Powiązania:
https://bibliotekanauki.pl/articles/111820.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
geomaterial
natural rock
exterior coating
acrylic
isolation
powłoka zewnętrzna
akryl
izolacja
panel izolacyjny
Opis:
Here we describe a new type of environmentally sensitive insulation panels which can be used on exterior wall surfaces to minimize all the negative aspects of existing coating materials by taking advantage of natural rock properties. We investigate the decorative characteristics and insulation performance of this new product, obtained by applying materials from different lithologies to Expanded Polystyrene Surfaces (EPS). First, a mortar with 25% acrylic and 75% sand was applied to the EPS by a stripping method using sand size materials from various lithologies (granite, micaschist, basalt, quartzite, and pumice). To determine the optimum thickness, insulation panels containing plaster of 2, 4, 6, and 8 mm thickness were prepared for each lithology. Their thermal conductivity coefficient, bending and compressive strength were tested. Predictably, thermal conductivity coefficient yielded lowest values in 2 mm panels and highest in 8 mm panels for all lithologies. The bending strength also increased proportionaly with thickness. In the compressive strength tests, the highest values were measured for the 2 mm panels while relatively low values were obtained for the 4, 6 and 8 mm panels, except for the micaschist and basalt-based panels. As a result, basalt and pumice offer superior features in the three measured parameters, so, it is expected that different combinations of these two lithologies would offer positive features. In this context, considering its high fire resistance and low thermal conductivity coefficient perpendicular to the planar surface of muscovites, micaschist is the third lithology that can be utilized with the two materials mentioned above. Compared with previous materials, the products investigated in this study are cost effective because they reduce paint costs, application time and total building load. The geomaterials also have aesthetic appeal.
Źródło:
Production Engineering Archives; 2018, 21; 12-19
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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