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  2. Photocatalytic concrete - Wikipedia

    en.wikipedia.org/wiki/Photocatalytic_concrete

    In order to avoid frequent cleanings of new church's concrete "sails", new development was used - white self-cleaning coating of the walls. [3] However, back then it wasn't known that this colouring plaster containing titanium dioxide and white pigment absorbs exhaust gases and other elements of city fog.

  3. Tortula muralis - Wikipedia

    en.wikipedia.org/wiki/Tortula_muralis

    T. muralis is most commonly found at moderate elevations in urban areas on concrete, brick walls, soil, rocks, or trees. [2] Distribution of T. muralis is said to be cosmopolitan, meaning that it is widely distributed across the globe and can be found in a variety of conditions.

  4. CityTrees - Wikipedia

    en.wikipedia.org/wiki/CityTrees

    CityTrees, also known as Robot Trees, Robo-Trees, and Moss Walls, are large air filters installed in many European cities, as well as Hong Kong, that remove pollutants from the atmosphere. A Braunschweig CityTree in 2022

  5. Roof cleaning - Wikipedia

    en.wikipedia.org/wiki/Roof_cleaning

    One safe and effective means to clean a roof is an electric agricultural sprayer system, as originally developed in Florida, USA in the early 1990s. [6] The equipment is used to apply a cleaning solution (typically containing bleach) that kills the algae, bacteria, mold, mildew, moss, fungus and other organic organisms growing on the roof.

  6. Pavers (flooring) - Wikipedia

    en.wikipedia.org/wiki/Pavers_(flooring)

    The first production of concrete pavers in North America was in Canada, in 1973. Due to their success, paving stone manufacturing plants began to open throughout the United States working their way from east to west. [5] The first concrete pavers were shaped just like a brick, 4 by 8 inches (100 mm × 200 mm), and they were called Holland Stones.

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  8. Precast concrete - Wikipedia

    en.wikipedia.org/wiki/Precast_concrete

    Precast concrete is a construction product produced by casting concrete in a reusable mold or "form" which is then cured in a controlled environment, transported to the construction site and maneuvered into place; examples include precast beams, and wall panels, floors, roofs, and piles.

  9. Fontinalis antipyretica - Wikipedia

    en.wikipedia.org/wiki/Fontinalis_antipyretica

    Fontinalis antipyretica, [2] greater water-moss, [3] or common water moss, is a species of submerged aquatic moss belonging to the subclass Bryidae. It is found in both still and flowing freshwater in Europe, Asia, Greenland and Africa. In North America it is found in most Canadian provinces with a seaboard and most US states except the most ...

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