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Hagia Sophia
The Hagia Sophia was constructed using pozzolana mortar. Evidence for the use of the substance comes from the sagging of the structures arches during construction. The decorative walls were removed in order to let the mortar cure. A distinguishing feature of pozzalana mortar is the large amount of time it needs to cure.


 * 1) ^ Livingston, R (1993). "Material Analysis of the Masonry of the Hagia Sophia Basilica, Istanbul". WIT Transactions on the Built Environment. Vol. 3: p. 25 – via Proquest.

Roman Technology Draft
User:Of Noble Berth/Roman technology

Annotated Bibliography
User:Of Noble Berth/Roman technology/ Annotated Bibliography