Historic mortars. Advances in research and practical conservation

0490961 - ÚTAM 2019 RIV CH eng M - Monography Chapter
Janotová, Dana - Nunes, Cristiana Lara - Slížková, Zuzana - Frankeová, Dita - Niedoba, Krzysztof
High-performance repair mortars for application in severe weathering environments: frost resistance assessment.
Historic mortars. Advances in research and practical conservation. Cham: Springer, 2019 - (Hughes, J.; Válek, J.; Groot, C.), s. 155-168. ISBN 978-3-319-91604-0
Institutional support: RVO:68378297
Keywords : mortar * frost * durability * hydrophobic
OECD category: Materials engineering
https://link.springer.com/chapter/10.1007/978-3-319-91606-4_12

Frost is one of the main degradation processes affecting historic buildings in cold environments. Lime mortar is particularly sensitive to degradation by freeze-thaw cycles due to its high porosity and low mechanical resistance. The aim of the present research is to assess the frost resistance of seven lime-based mortars to be used in repairs. Mortars with different binder composition and a traditional hydrophobic additive were tested. Specimens with three months of age were subjected to freeze-thaw cycles and the ageing action was evaluated by means of mechanical and physical measurements. Improved durability of lime-based mortars with hydraulic binders and linseed oil additive has been confirmed and the different mortar formulas may be promising for repairs according to specific environmental conditions.
Permanent Link: http://hdl.handle.net/11104/0285068