Mechanical, Hygric And Thermal Properties
Of Innovative Renovation Renders
Author(s)
E. Vejmelková, M. Keppert, P. Máca & R. Černý
Abstract
Basic physical properties, mechanical, hygric, and thermal properties of three
lime plasters containing metakaolin as pozzolana admixture and provided with
different amounts of hydrophobizing additive are investigated in the paper. As
the designed plasters are intended for renovation of historical buildings, their
properties are compared with two commercial renovation renders commonly
used in the building practice. Experimental results show that using the
hydrophobizing additive in the amount of 1% of the mass of binder is the most
prospective solution. The porosity of this plaster meets the basic WTA
requirement of 40%. Its mechanical properties are comparable with the
commercial plasters. The liquid water transport properties are favourable, the
water vapor transport is somewhat slower than optimal but still acceptable, the
thermal properties are satisfactory. Taking into consideration that this level of
properties is achieved without using any kind of cement which is in accordance
with the present effort of conservators to use materials with traditional
composition, one may expect that this plaster can find successful application in
reconstruction of historical buildings in the future.
Keywords: lime plasters, metakaolin, hydrophobizing additive, properties.
Keywords
lime plasters, metakaolin, hydrophobizing additive, properties
Related Book
Other papers in this volume
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