Durability of the hydrophobic treatment on brick and mortar

Hydrophobization lessens the water absorption by facade materials and is thus presumed to reduce moisture problems in internally insulated facades. However, do this it should retain repellency performance throughout aging. The aim of study evaluate impact aging on durability hydrophobic treatment bricks mortars. resulting coefficient, after 635 repeating artificial cycles alternating UV radiation (102 min) exposure (18 reveals that layer maintains its both brick mortar. samples were treated with two different repellent agents concentrations tested for capillary uptake. Additionally, findings show weathering could contribute positively further reduction coefficient hydrophobized mortar samples. Subsequently, Karsten tube tests from illustrate same as mock-up walls exposed ambient conditions, six years being hydrophobized. Contact angle measurements before reveal beading effect declines through seems be just a surface affected UV-light. Moreover, aging, samples, visual inspection, maintain their appearance while untreated signs efflorescence. In total, these indicate uptake or remains very low including spraying light.