In this study, considerations for design, characterization, and in-situ application of sustainable materials for restorative use in the Pasargadae world heritage site are discussed. The study as a preparatory stage of an eminent restoration project deals with several preliminary requisites leading to mortar design for in-situ application. In this research, one of the most important considered requisites is compatibility. This property does not exclude any of its physical, chemical, mechanical, or aesthetical manifestations. Reversibility, where is practicable, is another essential property expected from such a restoration material to be taken in account. Moreover, sustainability of the conservation project is highly dependent on the environmental considerations in the design of the restorative materials. Economic considerations will also play a critical role in the frame of conservation plan as their enhancement can broaden the domain of conservation potentials. The designated waste-based strategy in design of restorative materials and their response to certain requisites of the conservation plan are discussed. Furthermore, the particular considerations for restorations in Pasargadae incorporated some exclusive strategies as a restorative tailored design task.

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