ACCELERATED AGING TEST TO STUDY SELF CLEANING PROPERTIES OF PHOTOCATALYTIC POST TREATMENTS

Author(s): Garcia, G., Werle, A.P., Maranhão, F., Loh, K. and John, V.M.
Paper category: Conference
Book title: XIII International Conference on Durability of Building Materials and Components - XIII DBMC
Editor(s): Marco Quattrone, Vanderley M. John
Print ISBN: none
e-ISBN: 978-2-35158-149-0
Publication year: 2015
Pages: 1-8
Total Pages: 8
Language: English

Abstract: Most of the horizontal surfaces, as roof tops and pavements lose their initial reflectance due to environmental exposure over time. The observed changes are related with microbiological growth and dirt particles deposited on the surface. Those factors cause surface darkening, which is responsible for surface reflection reduction. Biodeterioration and soiling can be partially controlled by periodical cleaning. Cleaning activities are expensive and requires lots of water and detergents. A reflective self-cleaning surface could be a good solution. The aim of this work is to present a literature review of self-cleaning treatment applied on cementitious materials surfaces, as well as is presented a visual qualitative test with methylene blue indicator to show the efficiency of TiO2 as a cleaner agent. The methylene blue solutions were applied over mortar specimens treated with a solution of silane-siloxane overlapped with a 1% and 5% TiO2 solution. The test method was adequate to verify TiO2 efficiency between treated specimens and reference ones by color changes.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00