Please use this identifier to cite or link to this item: https://hdl.handle.net/10216/91183
Author(s): Inês Flores-Colen
Jorge de Brito
Vasco Peixoto de Freitas
Title: Expedient in situ test techniques for predictive maintenance of rendered façades
Issue Date: 2006
Abstract: The practice of predictive maintenance (through periodicinspections) depends on the efficiency of in situ evaluations of thein-service performance of the constructive solutions, which in turndepends on a set of logical procedures inherent to a performance based methodology and a correct diagnosis.In situ tests are a precious auxiliary tool for visual inspections,since they allow the detection of gross diagnosis mistakes, reducethe subjectivity of visual inspections and enable a more accurateassessment of the real maintenance needs. These tests havelimitations, however, and depend on the technique used (oftenthe limited precision of a technique only allows a qualitativeanalysis) and the experience of the practitioners. In situ tests forrendered facžades include a variety of tests and techniques, most ofthem not standardised, and therefore a coherent and globalclassification is sometimes difficult to establish.In this paper a methodology for choosing the most adequatein situ techniques to diagnose in-service performance of renderedfacžades is proposed. The subjects of this analysis were current andexpedient techniques, used in several inspections performed in different renders, within the PhD research work of the first author.These techniques are classified and also characterised in termsof the data collected (parameters measured), their contribution tounderstanding in-service performance (analysis of relevantproperties), the degradation state (anomalies and their causes)and their relation to maintenance needs. Finally, they arecompared and rated using various criteria and evaluated in termsof their adequacy for in situ assessment.
Subject: Engenharia civil, Engenharia civil
Civil engineering, Civil engineering
Scientific areas: Ciências da engenharia e tecnologias::Engenharia civil
Engineering and technology::Civil engineering
URI: https://repositorio-aberto.up.pt/handle/10216/91183
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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