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  • 1.
    Grøntoft, Terje
    et al.
    NILU Norwegian institute for air research, Sweden.
    Verney-Carron, Aurelie
    CNRS Université Paris-Est, France.
    Tidblad, Johan
    RISE - Research Institutes of Sweden, Materials and Production, KIMAB.
    Cleaning costs for European sheltered white painted steel and modern glass surfaces due to air pollution since the year 20002019In: Atmosphere, ISSN 2073-4433, E-ISSN 2073-4433, Vol. 10, no 4, article id 167Article in journal (Refereed)
    Abstract [en]

    This paper reports estimated maintenance-cleaning costs, cost savings and cleaning interval increases for structural surfaces and windows in Europe obtainable by reducing the air pollution. Methodology and data from the ICP-materials project were used. The average present (2018) cleaning costs for sheltered white painted steel surfaces and modern glass due to air pollution over background, was estimated to be ~2.5 Euro/m 2 ·year. Hypothetical 50% reduction in the air pollution was found to give savings in these cleaning costs of ~1.5 Euro/m 2 ·year. Observed reduction in the air pollution, from 2002-2005 until 2011-2014, have probably increased the cleaning interval for white painted steel with ~100% (from 12 to 24 years), representing reductions in the single intervention cleaning costs from 7 to 4%/year (= % of one cleaning investment, per year during the cleaning interval) and for the modern glass with ~65% (from 0.85 to 1.3 years), representing reductions in the cleaning cost from 124 to 95%/year. The cleaning cost reductions, obtainable by 50% reduction in air pollution, would have been ~3 %/year for white painted steel and ~60%/year for the modern glass, representing ~100 and 50% additional cleaning interval increases. These potential cleaning cost savings are significantly higher than previously reported for the weathering of Portland limestone ornament and zinc monuments.

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