Can mussel shell waste optimize cement and air lime mortars hygrothermal performance?
Mussel shells used as aggregates for mortars have flaky and irregular particles, which significantly increases the pore volume. This leads to the identification the microstructure of mussel shell mortars as a light and porous composite, which could have good hygrothermal properties. In the present s...
| Autores: | , , , |
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| Tipo de documento: | artigo |
| Data de publicação: | 2024 |
| País: | España |
| Recursos: | Consejo General de la Arquitectura Técnica de España (CGATE) |
| Repositório: | RIARTE |
| OAI Identifier: | oai:www.riarte.es:20.500.12251/3762 |
| Acesso em linha: | http://hdl.handle.net/20.500.12251/3762 https://doi.org/10.1016/j.conbuildmat.2024.138851 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Mejillones -residuos- Morteros - Construcción Material sostenible Material compuesto Conductividad térmica Rendimiento térmico Ensayos (propiedades o materiales) Propiedades mecánicas Humedad 3105.02 Piscicultura 2211.02 Materiales Compuestos 3312.02 Aglomerantes 3312.08 Propiedades de Los Materiales 3312.12 Ensayo de Materiales 3312.09 Resistencia de Materiales 3308.02 Residuos Industriales 3308.07 Eliminación de Residuos |
| Resumo: | Mussel shells used as aggregates for mortars have flaky and irregular particles, which significantly increases the pore volume. This leads to the identification the microstructure of mussel shell mortars as a light and porous composite, which could have good hygrothermal properties. In the present study, the density and thermal properties are assessed on cement and air lime mortars, each with three replacement percentages of replacement of conventional sand by mussel shell sand (25 %, 50 % and 75 %), are evaluated and compared with their respective baselines (0 % replacement). Thermal conductivity measurements are also carried out on different loose fractions of the mussel shell aggregate to understand the behaviour of this material without binder matrix. Finally, adsorption and desorption cycles at 80 % and 50 % relative humidity are carried out on loose aggregate fractions and on the eight mortars. The results are very positive for the mussel shell mortars, as it can be concluded that the use of mussel shell aggregates improves the thermal performance and the potential moisture buffering capacity of both cement and air-lime coating mortars. |
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