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Roman cement - key historic material to cover the exteriors of buildings



Title: Roman cement - key historic material to cover the exteriors of buildings
Author(s): G. Adamski, L. Bratasz, R. Kozlowski, N. Mayr, D. Mucha, M. Stilhammerova, J. Weber
Paper category : conference
Book title: Workshop Repair Mortars for Historic Masonry
Editor(s): C. Groot
Print-ISBN: None
e-ISBN: 978-2-35158-083-7
Publisher: RILEM Publications SARL
Publication year: 2009
Pages: 2 - 11
Total Pages: 10
Nb references: 3
Language: English


Abstract: Roman cements were key materials for the economic and easy manufacture of stuccoes for the exterior of buildings during the nineteenth and early twentieth centuries. The survey of historic buildings across Europe has revealed a considerable diversity of the historic application techniques from architectural castings, to in-situ applied renders and hand-run elements. A wide range of aggregate contents between 20 - 50% was identified. The microstructure of the Roman cement pastes showed a very fine ‘groundmass’ encapsulating a significant amount of partially hydrated remnants of original cements. Historic Roman cement mortars generally combine high porosity with high mechanical strength and excellent durability. Two categories of pores have been distinguished: fine pores characteristic of well-hydrated mature Roman cement matrix and large pores characteristic of mortars strongly exposed to air. The current ROCEM project is bringing back Roman cements to the market. A broad research on the compatibility between the historic stuccoes and new repair mortars is described.


Online publication: 2009-06-08
Publication type : full_text
Public price (Euros): 0.00