PSI - Issue 22

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

www.elsevier.com/locate/procedia

www.elsevier.com/locate/procedia

ScienceDirect

Procedia Structural Integrity 22 (2019) 166–170

© 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 © 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 Tw typ s of lime-b sed mortars w re used in th reh bilitation of wall coverings, and the ne d to study their mechanical behavior and durability arose. About the echanical behavior were analyzed flexural strength, compressive s r ngth and the peeling stress a the "pull-off" test. As to durability, part cularly in view of ing damp and infiltration, this study was performed by capillary water absorption tes and immersion due to water absorption at 48 (a mospheric pressure) for the deter in tion of water cont nt, focusing on its state of degrad ion, in order to itigate the r sks of ch ice. In this study, the results obtained in the tests of a t aditional lime mortar w th 1: 3 vo ume trace with the sampl s of a prefabrica ed mortar of hy r ted lime were comp ed, and in both mortars obtained values close to those recommended. However, the traditional hydraulic lime mortar has a peel force resistance well above the prefabricated mortar, and the recommended am unt in dom stic articles. © 2019 The Authors. Published by Elsev er B.V.This is an open access article u er th CC BY-NC-ND li ens (http://cr a ivecommons.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 Two types of lime-based mortars were used in the rehabilitation of wall coverings, and the need to study their mechanical behavior and durability arose. About the mechanical behavior were analyzed flexural strength, compressive strength and the peeling stress at the "pull-off" test. As to durability, particularly in view of the rising damp and infiltration, this study was performed by capillary water absorption test and immersion due to water absorption at 48 (atmospheric pressure) for the determination of water content, focusing on its state of degradation, in order to mitigate the risks of choice. In this study, the results obtained in the tests of a traditional lime mortar with a 1: 3 volume trace with the samples of a prefabricated mortar of hydrated lime were compared, and in both mortars obtained values close to those recommended. However, the traditional hydraulic lime mortar has a peel force resistance well above the prefabricated mortar, and the recommended amount in domestic articles. Abstract Keywords: Mortars; Coatings rehabilitation; mechanical strength. First International Symposium on Risk and Safety of Complex Structures and Components Analysis of mortars used in the rehabilitation of wall coating Maria da Luz Garcia a, *, Rosário Oliveira a a Department of Civil Engineering, School of Engineering, Polytechnic of Porto, Portugal *Corresponding authors: mlg@isep.ipp.pt; mro@isep.ipp.pt First International Symposium on Risk and Safety of Complex Structures and Components Analysis of mortars used in the rehabilitation of wall coating Maria da Luz Garcia a, *, Rosário Oliveira a a Department of Civil Engineering, School of Engineering, Polytechnic of Porto, Portugal *Corresponding authors: mlg@isep.ipp.pt; mro@isep.ipp.pt Abstract

Keywords: Mortars; Coatings rehabilitation; mechanical strength.

* Corresponding author. Maria da Luz Garcia E-mail address: mlg@isep.ipp.pt * Corresponding author. Maria da Luz Garcia E mail address: mlg@isep.ipp.pt

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/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/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.2020.01.023