The properties of building materials relevant to their thermal or aesthetical performance can be seriously influenced by the colonization of external surfaces by microorganisms. Deterioration phenomena due to biological aggression cause the loss of energy performance of solar reflective materials because of the decrease of solar reflectance. Bio-deterioration also affects cultural heritage, damaging the aesthetic appearance and thus the historic value. In order to investigate the consequences of biological aggression in short times, an accelerated test method based on a laboratory-reproducible set-up is proposed. Specific and controlled environmental conditions are chosen to accelerate as much as possible biological growth on building materials. In this regard, a reproducible bio-ageing protocol has been outlined and it allows a set of materials to reach an advanced bio-aged level in a short time (8 weeks or less). This test method is aimed to comparatively evaluate different materials under a given set of ageing conditions. Through surface, microstructural and chemical analysis, the evolution of the materials’ properties after ageing is investigated. Attention is also paid to bacterial and algal growth rate by analysing time-progressive images.

Accelerated biological ageing of solar reflective and aesthetically relevant building materials / Santunione, G.; Ferrari, C.; Siligardi, C.; Muscio, A.; Sgarbii, E.. - In: ADVANCES IN BUILDING ENERGY RESEARCH. - ISSN 1751-2549. - 13:2(2019), pp. 264-281. [10.1080/17512549.2018.1488616]

Accelerated biological ageing of solar reflective and aesthetically relevant building materials

G. Santunione;C. Ferrari;C. Siligardi;A. Muscio;E. Sgarbii
2019

Abstract

The properties of building materials relevant to their thermal or aesthetical performance can be seriously influenced by the colonization of external surfaces by microorganisms. Deterioration phenomena due to biological aggression cause the loss of energy performance of solar reflective materials because of the decrease of solar reflectance. Bio-deterioration also affects cultural heritage, damaging the aesthetic appearance and thus the historic value. In order to investigate the consequences of biological aggression in short times, an accelerated test method based on a laboratory-reproducible set-up is proposed. Specific and controlled environmental conditions are chosen to accelerate as much as possible biological growth on building materials. In this regard, a reproducible bio-ageing protocol has been outlined and it allows a set of materials to reach an advanced bio-aged level in a short time (8 weeks or less). This test method is aimed to comparatively evaluate different materials under a given set of ageing conditions. Through surface, microstructural and chemical analysis, the evolution of the materials’ properties after ageing is investigated. Attention is also paid to bacterial and algal growth rate by analysing time-progressive images.
2019
20-giu-2018
13
2
264
281
Accelerated biological ageing of solar reflective and aesthetically relevant building materials / Santunione, G.; Ferrari, C.; Siligardi, C.; Muscio, A.; Sgarbii, E.. - In: ADVANCES IN BUILDING ENERGY RESEARCH. - ISSN 1751-2549. - 13:2(2019), pp. 264-281. [10.1080/17512549.2018.1488616]
Santunione, G.; Ferrari, C.; Siligardi, C.; Muscio, A.; Sgarbii, E.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1167776
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 5
  • ???jsp.display-item.citation.isi??? 2
social impact