High-performance repair mortars for application in severe weathering environments: frost resistance assessment

0395695 - ÚTAM 2014 RIV GB eng O - Others
Janotová, Dana - Nunes, Cristiana Lara - Slížková, Zuzana - Frankeová, Dita - Niedoba, Krzysztof
High-performance repair mortars for application in severe weathering environments: frost resistance assessment.
The 3rd Historic mortars conference. Glasgow: University of the West of Scotland, 2013 - (Hughes, J.). ISBN 978-1-903978-44-3
R&D Projects: GA MK(CZ) DF11P01OVV008
Keywords : mortar * frost * durability * hydrophobic
Subject RIV: AL - Art, Architecture, Cultural Heritage

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/11104/0223975