Читать книгу Monument Future - Siegfried Siegesmund - Страница 172

The deterioration of historical structures is a topic of primary importance due to their historical, cultural and economic importance. Aggressive environments around structures can depend on anthropogenic factors such as NO₂, SO₂ gases among others, and environmental factors such as differential dilation, differential hydric dilation and crystallization. In the present study is proposed a physical-chemical characterization of the structure and quarry stone used for the replacement of deteriorated blocks of the defensive Wall of Cartagena, Colombia, UNESCO Cultural Heritage since 1984. X-ray and ionic chromatography identification were done in the structure stone. Furthermore, is proposed a Petrographical comparison between structure and quarry material as well as mechanical characterization of the quarry material.

The structure is composed mainly by soft limestone. Similar physico-chemical characteristics were found through X-Ray and Petrographical comparison, while salt crystallization is found playing a secondary role in the structure deterioration.