نتایج جستجو برای: building stone
تعداد نتایج: 240932 فیلتر نتایج به سال:
In most cases, internal insulation is the only solution to improve energy efficiency of historic buildings. However, it one challenging and complex measures due changes in boundary conditions hygrothermal behavior wall, particularly cold climates. This study presents long-term monitoring performance an internally insulated stone wall building. The aimed assess dolomite if mineral wool applied o...
We deal with the textural aspects, porometry and hydric behaviour of combinations of building materials and their durability under attack by salt crystallisation and freezing. We selected 4 types of lime mortar (pure lime mortar, lime mortar + air-entraining agent, lime mortar + pozzolana and lime mortar + air-entraining agent + pozzolana) which were used in combination with either brick or cal...
The influence of mineral substrate composition and structure on bacterial calcium carbonate productivity and polymorph selection was studied. Bacterial calcium carbonate precipitation occurred on calcitic (Iceland spar single crystals, marble, and porous limestone) and silicate (glass coverslips, porous sintered glass, and quartz sandstone) substrates following culturing in liquid medium (M-3P)...
The village house located in the Mersin Kanlıdivane archaeological site is one of oldest settlements ruins, built second century. mainly a yellowish beige limestone. This stone, which main material building, shows many deterioration patterns today. aim study to determine dominant pattern stones structure and investigate source deterioration. In order structure, images obtained by UAV photogramm...
Due to their widespread availability, sandstones are commonly used as a natural stone for buildings, monuments and sculptures. In thecurrent study, nine sandstone samples from the Upper Red Formation (specified by the letters A, B, C, CG, S, S1, Sh, Tr and Min)were studied from a petrophysical point of view and their durability was evaluated. Then, their suitability as building stones wasassess...
Characterisation of actinomycetes isolated from ancient stone and their potential for deterioration.
Actinomycetes have been isolated from decayed and sound stone samples taken from a tomb site at Tell Basta, Zagazig City, Egypt. A total of 160 isolates have been characterised. The numbers and distribution of actinomycetes were studied during different seasons; during the winter months (18-20 degrees C), actinomycete numbers ranged from 10(3) to 10(4) cfu/g; in the summer (28-38 degrees C) low...
Egyptologists have long claimed that no records exist which describe how the Pyramids were built. A stone stele is engraved on a rock at the island Sehel, near Elephantine, north of Aswan. It was discovered in 1889 by C.E. Wilbour and was deciphered by Brugsch (1891), Pleyte (1891), Morgan (1894), Sethe (1901) and Barguet (1953). The hieroglyphic text, called the Famine Stele, has been examined...
The Azores archipelago is a zone with a vast cultural heritage, presenting a building stock mainly constructed in traditional stone masonry. It is known that this type of construction exhibits poor behaviour under seismic excitations; however it is extensively used in seismic prone areas, such as this case. The 9th of July of 1998 earthquake was the last seismic event in the islands, leaving ma...
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