Abstract
Currently, Living Wall Systems (LWSs) are assuming great importance in the built environment, due to environmental and aesthetic advantages, as well as the use of urban residual space and underutilized surfaces of buildings. However, the maintenance and the durability of the materials used have been a challenge for architects and professionals in the field. The aim of this paper is to evaluate the anti-corrosion performance of a steel framing profile, galvanized carbon steel (55% Al-Zn), a sustainable material with easy assembly, to apply LWS in the hot and humid tropical climate of Niteroi (Rio de Janeiro, Brazil). In order to create the conditions of the tests, “X” cut were made in Al-Zn coating, sanding, and application of epoxy and glass fiber-reinforced polyester. After the experiments that lasted four months, the 55% Al-Zn coating was analyzed using Scanning Electron Microscope (SEM) and energy dispersive X-ray spectroscopy (EDS). The results of the tests were promising for the use of this galvanized steel for application as a support for green vertical facades. 55% Al-Zn coatings are recommended for marine atmospheres due to their good anti-corrosion performance.
Highlights
IntroductionAs an example of an efficient job in urban green areas, the building of the California Academy of Sciences in the San Francisco Golden Gate Park can be cited, which has a green roof of 10,000 m2, designed by architect Renzo Piano
The aim of this paper is to evaluate the anti-corrosion performance of a steel framing profile, galvanized carbon steel (55% Al-Zn), a sustainable material with easy assembly, to apply Living Wall Systems (LWSs) in the hot and humid tropical climate of Niterói (Rio de Janeiro, Brazil)
This paper focuses on the environmental evaluation of galvanized carbon steel, which composes the planter boxes and structure of an LWS, in order to determine whether this type of system responds correctly to the requirements of durability and anticorrosion, in maritime areas like Niteroi, in the state of Rio de Janeiro, Brazil
Summary
As an example of an efficient job in urban green areas, the building of the California Academy of Sciences in the San Francisco Golden Gate Park can be cited, which has a green roof of 10,000 m2, designed by architect Renzo Piano. This allows a pleasant surrounding transition tree landscape and connects the building to the park, absorbing a great part of the incident rainwater per year, equivalent to 14 million liters [4]
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