جستجوی مقالات مرتبط با کلیدواژه "rab-e rashidi" در نشریات گروه "تاریخ"

The historical site of Rab-e Rashidi of Tabriz or Rashidieh of Tabriz, which was built in 700 AH and It was used until the tenth century AH. It has been exploited in various residential and military ways. One of the architectural structures of Rab-e Rashidi is its large tower, which is located on the southern front. According to preliminary studies of this structure it has built in the tenth century AH. The engineering structure of the Rab-e Rashidi has not yet been studied archaeologically from a technological point of view. In particular, this large tower, contrary to the common architecture of the eighth to tenth centuries AH in Iran, especially Tabriz, is made of stone materials. It is natural that the knowledge of construction technology and technology used in this tower, which is contrary to similar buildings of the seventh to tenth centuries AH, requires the adoption of archaeological studies of technology and structure. This study is to review those examples of studies whose process can be repeated experimentally. Therefore, the mortar technology used in this tower, which has fully survived it from the severe earthquakes of the Safavid and early Qajar periods in Tabriz, needs to be re-recognized by scientific methods including field and laboratory studies and analytical and experimental. In this study, five mortar samples were prepared from five different points of the tower and studies of XRD, XRF, SEM, FTIR, petrography and digital microscope were performed. As a result of the studies, it was found that lime mortar was used in all parts of the tower, from the foundation to the upper parts made of stone. Some sand is used in lime mortar and there is a small amount of soil. Contrary to popular belief, no gypsum was detected in the mortar composition.