Stone Architectural Decoration in Burji Era: The Northern Mausoleum in the Khanqah of Al-Nasir Faraj Ibn Barquq (Cairo). Contribution to the Knowledge and Conservation Assessment

The conservation of monuments in Cairo represents a complex matter, influenced by the cultural context, intrinsic features vast and heterogeneous architectural heritage, environmental conditions. Monument vulnerability levels strongly need to be systematized delineate adequate programs control, management, intervention. Despite their leading role Egyptian many experience critical state conservation. Here, we report results multi-scale investigation northern mausoleum Khanqah Al-Nasir Faraj Ibn Barquq, located Islamic cemetery Al-Qarafa Al-Kubra (Cairo, Egypt). Our research aims increase knowledge on decorative stones used decay processes. has been focused two areas building covered colored stone-slabs pattern: floor qibla wall. A detailed survey, carried out through photogrammetric techniques, provided three-dimensional morphological mausoleum, upgrading available surveys made about 50 years ago. distribution materials verified visual analysis, integrated first mineralogical petrographic characterization this mausoleum. digital survey stone surfaces mineralogical, chemical, analyses allowed systematic mapping phenomena some insights alteration single elements. obtained indicate capillary rise groundwaters airborne pollution as main degradation