Simulation of humidity fields in aerial lime mortar.
• Pioneering simulation of humidity diffusion in aerial lime mortars. • Modeling the humidity diffusion in aerial lime mortar using a model proposed to concrete. • Modeling strategy able to appropriate simulate the experimental results. • Best pair of D 1 and f boundary presenting values higher than...
| Publicado en: | Journal of Cultural Heritage Vol. 53; pp. 35 - 47 |
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| Autores principales: | , , , |
| Formato: | Artículo |
| Publicado: |
Elsevier B.V.
Jan2022
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=155341744&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 155341744 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 12962074 KK8 jtl: Journal of Cultural Heritage issn: 12962074 maglogo: N pubinfo: dt: Jan2022 vid: 53 pid: 467 pub: Elsevier B.V. artinfo: ui: 155341744 10.1016/j.culher.2021.11.003 ppf: 35 ppct: 12 formats: tig: atl: Simulation of humidity fields in aerial lime mortar. aug: au: Oliveira, Mateus Guimarães, Erika Meneghini, Anna Carvalho, Hermes affil: UFMG – Federal University of Minas Gerais, School of Engineering, Department of Structural Engineering, Campus Pampulha, 31270-901 Belo Horizonte, Brazil ISISE – Institute for Sustainability and Innovation in Structural Engineering, University of Minho, School of Engineering, Department of Civil Engineering, Campus de Azurém, 4800–058 Guimarães, Portugal su: Mortar Porous materials Finite difference method Humidity Historic buildings sug: subj: Mortar Porous materials Finite difference method Humidity Historic buildings keyword: Aerial lime mortar Diffusivity Humidity diffusion Numerical simulation ab: • Pioneering simulation of humidity diffusion in aerial lime mortars. • Modeling the humidity diffusion in aerial lime mortar using a model proposed to concrete. • Modeling strategy able to appropriate simulate the experimental results. • Best pair of D 1 and f boundary presenting values higher than in concrete. The structural safety of historic buildings frequently demands an advanced structural analysis. These constructions often have cultural and architectonic values and were constructed with porous materials bond with mortar. Mortar usually presents a complex composition and structural behavior. This fact supports the requirement for a meticulous analysis of the role of mortar within the scope of the structural behavior of historic masonry construction. In different parts of the world, there is a significant quantity of historic constructions comprehending binders based on aerial lime mortars. Aerial lime is one of the oldest binders discovered and used. Moisture content in aerial lime structures has an important influence on their behavior and performance. An experimental program was developed to study the humidity flux in aerial lime mortar including the self-desiccation phenomenon. In order to simulate this drying process, a software based on a Finite Difference Method Algorithm (1D and axisymmetric cases) is used. The pioneer software used to identify the main material parameters that better fit the experimental data, considering the approach presented by Model Code 2010. The modeling strategy was firstly applied to experimental results of cylinders specimens and in sequence to experimental results of a prismatic mold. In general, the model was able to satisfactory fit the experimental results. When compared to concrete material, higher values for diffusivity and for boundary coefficient were found. For the studied specimens, the experimental and numerical results indicated reduced humidity gradient. These results are probably associated with the high porosity of the mortar. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2022 holdings: @attributes: islocal: N |
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