TY - JOUR A1 - Malaga, Katarina A1 - Lundahl, A. A1 - Müller, Urs T1 - Use of technical textiles to modify concrete surfaces N2 - To keep concrete building façades clean from dirt and algal growth intense maintenance is needed. A designaspiration for advanced building materials is that they should be easily cleanable when used in façades. Theapplication of technical textiles as a building material component has mainly focused on their use as a rein-forcement material for concrete or mortar. The goal of this study was to modify the concrete surface by cast-ing concrete in a textile mould, giving the surface a fine structured imprint, that subsequently was impreg-nated with hydrophobic agents to achieve the self-cleaning Lotus effect.The analysis of the surface properties was performed by means of contact angle measurements, laser scan-ning confocal microscopy and optical microscopy. Three different textiles, including one with nano-engi-neered surface, were used for moulding and imprinting. The results demonstrated significant variations inhydrophobicity and oleophobicity between the samples. Micro- and nano-structuring of the surface did notresult in hydrophobicity by itself; therefore a hydrophobic treatment was necessary to achieve water- andoleophobicity. After this treatment all samples became hydrophobic but not necessarily oleophobic. Onlysingle samples reached a superhydrophobic eff KW - Concrete KW - Textile imprint KW - Nano KW - Hydrophobicity KW - Oleophobicity KW - Beton KW - Textilien KW - Oberflächen KW - Wasserabweisend PY - 2012 SN - 1864-7251 SN - 0947-4498 VL - 18 IS - 1 SP - 23 EP - 30 PB - Aedificatio Publ. CY - Freiburg AN - OPUS4-25635 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -