Hygrothermal behaviour of mussel shell coating mortars

Carolina Martínez-García, Belén Gonzalez-Fonteboa , D. Carro-López, F. Martínez-Abella, Paulina Faria

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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Air lime coating mortars with mussel shells exhibit useful hygrothermal properties related to humidity and temperature regulation. Introducing mussel shell sand produces a significant increase in pore volume, changing mortar’s microstructure and reducing density. This is attributed to the flaky and irregular shape of the shell particles that present also traces of organic matter. In this work, the natural aggregate is replaced by mussel shell sand in increasing percentages of 25%, 50% and 75%. Additionally, a mortar with 0% of sand replacement is used as baseline of reference. These mortars are tested focusing in two main parameters, in first term, thermal conductivity. And also absorption and desorption cycles, at 80 and 50% relative humidity. The results are very positive for mussel shells specimens, it can be concluded that the use of mussel
shell aggregates can improve the hygrothermal properties of air lime coating mortars. Another interesting result is a subjective property such as the aesthetic quality of the finishing, the results is pleasing and, combined with the promising hygrothermal properties opens a good opportunity for mussel shell mortars.
Original languageEnglish
Title of host publicationProceedings of ICBBM 2021 - 4th International Conference on Bio-based Building Materials
EditorsSofiane Amziane, Mohammed Sonebi
Publication statusPublished - Jun 2021
Event4th International Conference on Bio-based Building Materials: ICBBM 2021 - Barcelona, Spain
Duration: 16 Jun 202118 Jun 2021
Conference number: 4


Conference4th International Conference on Bio-based Building Materials
Abbreviated titleICBBM 2021


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