Читать книгу Monument Future - Siegfried Siegesmund - Страница 153

The preservation of the UNESCO World Heritage Site Takht-e Soleyman is supported by German experts who are working on the 114reinforcement of the badly cracked north wall of the west iwan (large audience hall). The building material gypsum which was used in the past is now also used for up-to-date repair work such as grouting and filling cracks and voids in the historic masonry. Locally quarried gypsum was used to produce a high-fired gypsum mortar in the traditional way. On the basis of laboratory experiments the activation of the hydration of anhydrite and the flow behavior of the mortar suspension was optimized.

Kewords: Ilkhanid palace, calcium sulfate phases, gypsum calcination, grouting, static safeguarding of masonry