Publicação
Parametrical studies of the behavior of aerial lime mortars
| Resumo: | Aerial lime has been largely used as binder in mortars before the emergence of Portland cement, being commonly found in historic constructions. The contemporary interest in aerial lime mortars has enlarged concerning the field of structural restoration, given its compatibility with traditional materials. The process through which lime hardens is the carbonation reaction. Aiming to understand the influence of environmental conditions on carbonation, the current work extends a previously developed study on the behaviour of aerial lime mortars, in view backing multiphysics simulation models and obtaining modelling parameters. Systematic studies on the effect of relative humidity, carbon dioxide concentration and carbonation rate throughout time were followed by modifying the environments of exposure of specimens and comparing the results. Carbonation has been investigated using thermo gravimetric analysis and phenolphthalein staining. Additionally, drying and water transport mechanisms were assessed through humidity profiles monitoring. Mechanical properties have also been evaluated and discussed in view of chemical investigation results. |
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| Autores principais: | Guimarães, Erika Tinoco |
| Assunto: | Aerial lime mortar Carbonation Thermo gravimetric analysis Hot-lime mix Humidity Argamassa de cal aérea Carbonatação Análises termo-gravimétricas Humidade Engenharia e Tecnologia::Engenharia Civil |
| Ano: | 2014 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | Aerial lime has been largely used as binder in mortars before the emergence of Portland cement, being commonly found in historic constructions. The contemporary interest in aerial lime mortars has enlarged concerning the field of structural restoration, given its compatibility with traditional materials. The process through which lime hardens is the carbonation reaction. Aiming to understand the influence of environmental conditions on carbonation, the current work extends a previously developed study on the behaviour of aerial lime mortars, in view backing multiphysics simulation models and obtaining modelling parameters. Systematic studies on the effect of relative humidity, carbon dioxide concentration and carbonation rate throughout time were followed by modifying the environments of exposure of specimens and comparing the results. Carbonation has been investigated using thermo gravimetric analysis and phenolphthalein staining. Additionally, drying and water transport mechanisms were assessed through humidity profiles monitoring. Mechanical properties have also been evaluated and discussed in view of chemical investigation results. |
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