Abstract:
Present building construction sector use different
walling materials with different surface roughness values. With
the increase of surface roughness, durability of the material
reduces, while increasing the biological growth; such as moss and
fungus, on walls. Therefore it was recommended wall smoothing
as a sustainable solution to increase the durability of building
walls. Wall care putty and lime can be identified as the most
common wall finishers apply in the present construction sector.
This study was conducted in order to analyze the durability
performance of existing wall finishers to enhance the durability
of walling materials. For the study, five materials were selected
including four different walling materials; brick, cement block,
cement stabilized earth block and mud concrete block, and a
common wall plastering material; rough cement plaster. Ten
different wall finishing mixtures; prepared by mixing lime, three
different wall care putty products and cement according to the
mix design, were selected as wall finishers. Prepared ten wall
finishing mixtures were applied on selected walling materials and
subjected to the spray erosion test which simulated ten year rain
in to one hour time period. At the end of the test pit depths and
scaled off material mass were measured and scaled off factor was
calculated. According to the results scaled off factor is lowest in
lime and in wall care putty it reduces with the increase of cement
percentage. Lime is the most durable wall finisher according to
the results. And wall putty layer also protect the walling material
against rain surface erosion. Therefore it is concluded as existing
wall finishers enhance the durability of different walling
materials against rain surface erosion.
