Influences Affecting Compressive Strength Of
Modern Non-hydraulic Lime Mortars Used In
Masonry Conservation
Author(s)
J. Valek & P.J.M. Bartos
Abstract
Non-hydraulic lime based mortars are currently more and more often used for the
repair of historic masonry. They are presumed to be compatible with the original
mortar/masonry and their properties are not always evaluated, mainly due to a
lack of research into mortars produced in a traditional manner. Influences of
curing conditions, quality of mixing and water content on compressive strength
of a non-hydraulic lime mortar mix made of lime putty were reviewed and
examined. The mortar specimens were prepared with various water contents,
cured in outdoor and indoor conditions and tested after 1, 2, 4 and 6 months.
Phenolphthalein pH indictor was used to measure the carbonation depth. The
strongest mortar specimens were from the indoor ageing condition although the
mortar was less
Keywords
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