Study of damage distribution and intensity in regions of the facade

Abstract

The ceramic coating systems applied to building facades have relevant aesthetic value and protection functions. The architectural and environmental conditions can greatly influence the degradation process of the facades, which may pose risks and compromise the durability and service life of the building and its components. The degradation process of facades changes according to the region where it takes place. To this end, the present study aims to determine damage intensity and distribution in the different regions of the facade. This study investigated the facades of three buildings that are part of the Materials Testing Laboratory (LEM) database of the Universidade de Brasilia. The degradation was quantified using a methodology proposed by Silva (2014) to generate a degradation index expressed in m 2. After the quantification of damages, few indexes associated with the percentage of degraded area, applied to the facade regions, are presented. These weighted indexes allowed to standardize the values observed in each region. Obtaining these indices is fundamental to the study of degradation. The results show that for a comparative analysis between the regions, the observed values should be corrected for the proportionality of the area of each region in relation to the total area of the facade. It was also noted that the continuous walls are the most affected regions, but they do not always present the highest damage intensity.

Degradação Térmica De Concretos Convencionais Submetidos a Altas Temperaturas E Resfriamento Lento

“…Ainda sobre os procedimentos metodológicos, 14% das pesquisas abordaram cálculos de índices de degradação a partir de mapas de danos, onde malhas são sobrepostas nos mapas e a área degradada é obtida pela contagem de unidades da malha, expressas em m². Os autores afirmam que a medição de degradação é uma etapa básica para avaliar a vida útil do edifício e de seus elementos, sendo possível também definir os comportamentos das anomalias quanto à previsão da vida útil através de monitoramentos (BAUER et al, 2014;SOUZA et al, 2016). Desta forma, pode-se dizer que os mapas de dano facilitam a visualização para a realização de cálculos do nível e degradação.…”

Aplicação de curvas de degradação na previsão de vida útil de revestimentos de argamassa externa com acabamento em pintura na cidade de Recife, Brasil

“…Os defeitos detectados em cada um dos subgrupos são posteriormente classificados de acordo com níveis de degradação estabelecidos (Chew, 2005;Marteinsson & Jonsson, 1999;Shohet & Paciuk, 2004). Desta forma, a previsão da vida útil pode ser baseada em modelos que analisam os vários fatores que influenciam o processo de degradação (Souza et al, 2016). Os fatores de degradação podem ser classificados em intrínsecos e extrínsecos (Petrucci, 2000;Poyastro, 2011).…”

Diagnosis of degradation state of the historic building facade through qualitative and quantitative indicators: case study of the Former School of Agronomy Eliseu Maciel

“…In this context, some alternatives have been proposed to evaluate the pathological manifestations in facades of contemporary buildings and may become alternatives to evaluate those of historical buildings. Among the alternatives, one can mention the degradation measurement method (MMD) and the element performance index (Ip) (Silva, 2014; Bauer et al , 2020; Taguchi, 2010; De Souza et al , 2016; Costa and Torres, 2020; Costa et al , 2020a, b, c, 2021). These methods are based on quantitative analyses to determine damage to facades and have as main advantages the measurement of degradation by numerical factors, not depending solely on visual acuity.…”