PSI - Issue 22

ScienceDirect Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2019) 000 – 000 Available online at www.sciencedirect.com Procedia Structural Integrity 22 (2019) 144–150

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www.elsevier.com/locate/procedia

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers 10.1016/j.prostr.2020.01.020 2452-3216 © 2019 The Authors. Published by Elsevier B.V.This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review statement: Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers 2452-3216 © 2019 The Authors. Published by Elsevier B.V.This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/lic nses/by-nc-nd/4.0/) Peer-review statement: Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the First International Symposium on Risk and Safety of Complex Structures and Components organizers Abstract Urban rehabilitation is becoming more frequent nowadays. With cities full of falling buildings and no space to build new ones, the only solution is to rehabilitate the existing heritage in order to give new life to the vacant buildings and repopulate the cities. A large amount of the built heritage suffers from advanced degradation, making the recovery, increasing the complexity of the rehabilitation and restoration intervention and implying a highly specialized interdisciplinary component. In this type of works more dust is produced than in a new work. In addition, the origin and composition of existing materials is often unknown and can therefore pose many risks to the health of workers. Meaning, dust is breathable and can remain in the air for a long period of time, being invisible to the naked eye and very light. When a building is being demolishing, the production of dust increases significantly. Depending on the type of materials to demolish, the risk of occupational diseases, or risks, to the health of workers may be great. To avoid such risks, preventive measures must be taken in the execution of the tasks. In this study, the dust of two rehabilitation works in the district of Viana do Castelo was studied through experimental tests in order to verify the composition of the demolished materials. Particles characterization was done, using scanning electron microscopy (SEM). Then, with the tests results, the chemical composition of the existing materials was analyzed in detail. After that, the chemical components of demolished materials were carefully studied to identify which of these particles could represent a risk to the workers' health. As a conclusion the preventive measures that workers must take when performing rehabilitation works are presented, depending on what type of materials they are potentially exposed. Abstract Urban rehabilitation is becoming more frequent nowadays. With cities full of falling buildings and no space to build new ones, the only solution is to rehabilitate the existing heritage in order to give new life to the vacant buildings and repopulate the cities. A large amount of the built heritage suffers from advanced degradation, making the recovery, increasing the complexity of the rehabilitation and restoration intervention and implying a highly specialized interdisciplinary component. In this type of works more dust is produced than in a new work. In addition, the origin and composition of existing materials is often unknown and can therefore pose many risks to the health of workers. Meaning, dust is breathable and can remain in the air for a long period of time, being invisible to the naked eye a d very light. When a building is being emolishing, the production of dust increases significantly. Depending on the type of materials to demolish, the risk of occupational diseases, or risks, to the health of workers may be great. To avoid such risks, preventive measures must be taken in the execution of the tasks. In this study, the dust of two rehabilitation works in the district of Viana do Castelo was studied through experimental tests in order to verify the composition of the demolished materials. Particles characterization was done, using scanning electron microscopy (SEM). Then, with the tests results, the chemical composition of the existing materials was analyzed in detail. After that, the chemical components of demolished mate ials wer carefully studied t identify hich of these particl s could represent a risk to the workers' health. As a conclusion t prev ntive measures that workers must take when performing rehabilitation works are pres n d, depending on what type of materials th y are potentially exposed. First International Symposium on Risk and Safety of Complex Structures and Components Study of the dust produced in rehabilitation works C. Oliveira a,b, * , C. Reis c,b,d , J.C.C. Abrantes a,e , L.T. Silva f , P.L. Silva c,b , J.F. Silva a a Department of Civil Engineering, Polytechnic of Viana do Castelo, Viana do Castelo, Portugal b INEGI, Faculty of Engineering (FEUP), University of Porto, Portugal c UTAD, School of Sciences and Technology, Vila Real, Portugal d CONSTRUCT LFC, Faculty of Engineering (FEUP), University of Porto, Portugal First International Symposium on Risk and Safety of Complex Structures and Components Study of the dust produced in rehabilitation works C. Oliveira a,b, * , C. Reis c,b,d , J.C.C. Abrantes a,e , L.T. Silva f , P.L. Silva c,b , J.F. Silva a a Department of Civil Engineering, Polytechnic of Viana do Castelo, Viana do Castelo, Portugal b INEGI, Faculty of Engineering (FEUP), University of Porto, Portugal c UTAD, School of Sciences and Technology, Vila Real, Portugal d CONSTRUCT LFC, Faculty of Engineering (FEUP), University of Porto, Portugal e ProMetheus, ESTG, Instituto Politécnico de Viana do С astelo, Portugal f Department of Civil Engineering, University of Minho, Guimarães, Portugal *Corresponding author: carlosoli@estg.ipvc.pt e ProMetheus, ESTG, Instituto Politécnico de Viana do С astelo, Portugal f Department of Civil Engineering, University of Minho, Guimarães, Portugal *Corresponding author: carlosoli@estg.ipvc.pt * Corresponding author. Tel.: +351-258-819-182. E-mail address: carlosoli@estg.ipvc.pt * Corresponding author. Tel.: +351-258-819-182. E-mail address: carlosoli@estg.ipvc.pt