This paper introduces research about a model for determining the experimental ageing cycle in laboratory tests for evaluating durability. The model has been implemented with computer software that uses an algorithm in which the input is comprised of a series of climatic data that was obtained from various national climatic database sources. The model was implemented specifically for evaluating a continuous roofing sub-system, as part of a broader Italian national research project, related to the durability of building components. The Italian national research project has one that encompassed a network of research organisations from the Universities of Brescia, Catania, Milan, Naples, Palermo and Turin. Research on the durability of continuous roofing has typically been based on a comparison between the results from artificial ageing tests (conducted in a laboratory) with those obtained from natural weathering tests on the same sample. The approach taken in this research project was to attempt to simulate - in the laboratory - the environmental actions that roofing sub-systems are typically exposed to, in relation to the various climatic conditions in which they are expected to perform. The computer output derived from an application of the model provides for the duration of laboratory ageing sub cycles - each one representing, and essentially reproducing a climatic season - with respect to temperature, humidity, sunlight radiation, and rainfall to which the sample is subjected. In this way a “virtual year” is obtained comprising four climatic seasons, each having different values for temperature, humidity, sunlight radiation and rainfall. The values to consider in laboratory tests are those, for the region and the time of year, which represent the season in question. The necessary values for implementing the model proposed are fixed and given in the research for three particular contexts (Milan, Naples and Palermo) Actually, a method to compose the cycles test in any climatic context for various kinds of experimentation in laboratory about the simulation of environmental effects on each part of building has been already implemented.

A Model for Determining Accelerated Ageing Cycles in Durability Research: a Case study on Continuous Roofing / Nicolella, Maurizio. - ELETTRONICO. - (2008), pp. 451-460. (Intervento presentato al convegno XI International Conference on Durability of Building Materials and Components tenutosi a Istanbul nel 2008).

A Model for Determining Accelerated Ageing Cycles in Durability Research: a Case study on Continuous Roofing

NICOLELLA, MAURIZIO
Writing – Original Draft Preparation
2008

Abstract

This paper introduces research about a model for determining the experimental ageing cycle in laboratory tests for evaluating durability. The model has been implemented with computer software that uses an algorithm in which the input is comprised of a series of climatic data that was obtained from various national climatic database sources. The model was implemented specifically for evaluating a continuous roofing sub-system, as part of a broader Italian national research project, related to the durability of building components. The Italian national research project has one that encompassed a network of research organisations from the Universities of Brescia, Catania, Milan, Naples, Palermo and Turin. Research on the durability of continuous roofing has typically been based on a comparison between the results from artificial ageing tests (conducted in a laboratory) with those obtained from natural weathering tests on the same sample. The approach taken in this research project was to attempt to simulate - in the laboratory - the environmental actions that roofing sub-systems are typically exposed to, in relation to the various climatic conditions in which they are expected to perform. The computer output derived from an application of the model provides for the duration of laboratory ageing sub cycles - each one representing, and essentially reproducing a climatic season - with respect to temperature, humidity, sunlight radiation, and rainfall to which the sample is subjected. In this way a “virtual year” is obtained comprising four climatic seasons, each having different values for temperature, humidity, sunlight radiation and rainfall. The values to consider in laboratory tests are those, for the region and the time of year, which represent the season in question. The necessary values for implementing the model proposed are fixed and given in the research for three particular contexts (Milan, Naples and Palermo) Actually, a method to compose the cycles test in any climatic context for various kinds of experimentation in laboratory about the simulation of environmental effects on each part of building has been already implemented.
2008
978-975-561-330-7
A Model for Determining Accelerated Ageing Cycles in Durability Research: a Case study on Continuous Roofing / Nicolella, Maurizio. - ELETTRONICO. - (2008), pp. 451-460. (Intervento presentato al convegno XI International Conference on Durability of Building Materials and Components tenutosi a Istanbul nel 2008).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/333828
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