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Earthen Plasters Based on Illitic Soils from Barrocal Region of Algarve: Contributions for Building Performance and Sustainability

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Abstract:

Clayish earth-based mortars can be considered eco-efficient products for indoor plastering since they can contribute to improve important aspects of building performance and sustainability. Apart from being products with low embodied energy when compared to other types of mortars used for interior plastering, mainly due to the use raw clay as natural binder, earth-based plasters may give a significant contribution for health and comfort of inhabitants. Due to high hygroscopicity of clay minerals, earth-based mortars present a high adsorption and desorption capacity, particularly when compared to other type of mortars for interior plastering. This capacity allows earth-based plasters to act as a moisture buffer, balancing the relative humidity of the indoor environment and, simultaneously, acting as a passive removal material, improving air quality. Therefore, earth-based plasters may also passively promote the energy efficiency of buildings, since they may contribute to decreasing the needs of mechanical ventilation and air conditioning. This study is part of an ongoing research regarding earth-based plasters and focuses on mortars specifically formulated with soils extracted from Portuguese ‘Barrocal’ region, in Algarve sedimentary basin. This region presents high potential for interior plastering due to regional geomorphology, that promote the occurrence of illitic soils characterized by a high adsorption capacity and low expansibility. More specifically, this study aims to assess how clayish earth and sand ratio of mortars formulation can influence the physical and mechanical properties of plasters. For this assessment four mortars were formulated with different volumetric proportions of clayish earth and siliceous sand. The results from the physical and mechanical characterization confirmed the significantly low linear shrinkage of all the four mortars, as well as their extraordinary adsorption-desorption capacity. These results presented a positive correlation with mortars ́ clayish earth content and are consistent with the mineralogical analysis, that confirmed illite as the prevalent clay mineral in the clayish earth used for this study. Regarding mechanical resistance, although the promising results of the adhesion test, the flexural and compressive strength results suggest that the mechanical resistance of these mortars should be slightly improved. Considering the present results the mortars mechanical resistance improvement may be achieved through the formulation of mortars with higher clayish earth content, or alternatively, through the addition of natural fibers to mortars formulation, very common in this type of mortars. Both those options will be investigated in future research.

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Periodical:

Key Engineering Materials (Volume 678)

Pages:

64-77

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.678.64

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Online since:

February 2016

Authors:

José Lima*, Paulina Faria, António Santos Silva

Keywords:

Clay Hygroscopicity, Clay Mineralogy, Dynamic Adsorption, Earth-Based Plasters, Illitic Soils, Moisture Buffering, Relative Humidity

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References

[1] Melià, P.; Ruggieri, G.; Sabbadini, S.; Dotelli, G. (2014) – Environmental impacts of natural and conventional building materials: a case study on earth plasters. J. Clean. Prod., 2014, pp.179-186.

DOI: 10.1016/j.jclepro.2014.05.073

Google Scholar

[2] Minke, G. (2006) – Building with earth: design and technology of a sustainable architecture. Basel: Birkhauser - Publishers for Architecture, 2006. 199 p. ISBN-13: 978-3-7643-7477-8. ISBN-10: 3-7643-7477-2.

Google Scholar

[3] Botelho-Costa, J. (1973) – Soil characterization and formation (in Portuguese). 7ª 7th ed. Lisbon: Fundação Calouste Gulbenkian, 2004. ISBN 972-31-0073-8.

Google Scholar

[4] Gomes, C. (1988) – Clays: what they are and for what they serve (in Portuguese). 1st ed. Lisbon: Fundação Calouste Gulbenkian, (1988).

Google Scholar

[5] Maddison, M.; Mauring, T.; Kirsimae, K.; Mander, U. (2009) – The humidity buffer capacity of clay-sand plaster filled with phytomass from treatment wetlands. Build. Environ., 2009, pp.1864-1868.

DOI: 10.1016/j.buildenv.2008.12.008

Google Scholar

[6] Liuzzi S, Hall MR, Stefanizzi P, Casey SP (2013) – Hygrothermal behaviour and relative humidity buffering of unfired and hydrated lime-stabilised clay composites in a Mediterranean climate. Build. Environ., 61, p.82–92.

DOI: 10.1016/j.buildenv.2012.12.006

Google Scholar

[7] Moret-Rodrigues A, Canha-Piedade A, Braga A (2009) – Thermal in buildings (in Portuguese). 1st ed. Alfragide: Orion editions. ISBN 978-972-8620-13-4.

Google Scholar

[8] WHO World Health Organization (2009) Guidelines for indoor air quality: dampness and mould. Copenhagen: World Health Organization - Regional Office for Europe. ISBN 978-92-890-4168-3.

Google Scholar

[9] Lamble SP, Corsi RL, Morrison GC (2011) – Ozone deposition velocities, reaction probabilities and product yields for green building materials. Atmospheric Environ., 45(38), p.6965–6972.

DOI: 10.1016/j.atmosenv.2011.09.025

Google Scholar

[10] Darling EK, Cros CJ, Wargocki P et al (2012) – Impacts of a clay plaster on indoor air quality assessed using chemical and sensory measurements. Build Environ., 57, p-370–376.

DOI: 10.1016/j.buildenv.2012.06.004

Google Scholar

[11] DIN 18947: 2013 – Earth plasters - Terms and definitions, requirements, test methods (in German). Berlin: DIN – Deutsches Institut für Normung.

Google Scholar

[12] Delinière, R.; Aubert, JE.; Rojat, F.; Gasc-Barbier, M. (2014) – Physical, mineralogical and mechanical characterization of ready-mixed clay plaster. Build. Environ., 2014, pp.11-17.

DOI: 10.1016/j.buildenv.2014.05.012

Google Scholar

[13] Lima J, Faria P (2014).

Google Scholar

[14] Faria P, Santos T, Aubert J-E (2015) – Experimental characterization of an earth eco-efficient plastering mortar. Journal of Materials in Civil Engineering (in press), Doi: 10. 1061/(ASCE)MT. 1943-5533. 0001363.

DOI: 10.1061/(asce)mt.1943-5533.0001363

Google Scholar

[15] Lima J, Faria P (2015).

Google Scholar

[16] Manuppella, G. (1992) – General features of the Algarve geology - Mesozoic (in Portuguese). In Manuppella, Giuseppe [Coord. ] –Geological chart of Algarve region: Scale 1: 100. 000. Explanatory note. Serviços de Geologia de Portugal, (1992).

Google Scholar

[17] Kopp, E. [et al. ] (1989) – Algarve soils and its characteristics: Overview (in Portuguese). 1st reprint. Faro: Departamento Regional de Agricultura do Algarve, (2000).

Google Scholar

[18] Pinto-Gomes, C.; Paiva-Ferreira, R. (2005) - Flora and vegetation of Barrocal region in Algarve – Tavira-Portimão (in Portuguese). Faro: CCDR Algarve, 2005. 354 p. ISBN 972-95734-9-2.

Google Scholar

[19] Manuppella, G. [et. al. ] (1985) – Knowledge contribution of Algarve clays characteristics (in Portuguese). Porto: Estudos, Notas e Trabalhos do Serviço de Fomento Mineiro e Laboratório da DGGM. Tomo 27, 1985. pp.59-75.

Google Scholar

[20] Agência Portuguesa do Ambiente – Environmental Atlas (in Portuguese). [On-line]. Lisbon: APA, 2013. [Accessed 2013-10-09]. Available at WWW: <URL: http: /sniamb. apambiente. pt/atlas/>.

Google Scholar

[21] EN 1015-1: 1998 - Methods of test for mortar for masonry; Part 1: Determination of particle size distribution (by sieve analysis). Brussels: CEN – European Committee for Standardization.

DOI: 10.3403/01541452

Google Scholar

[22] EN 1015-3: 1999 - Methods of test for mortar for masonry; Part 3: Determination of consistence of fresh mortar (by flow table). Brussels: CEN – European Committee for Standardization.

DOI: 10.3403/01541440

Google Scholar

[23] EN 1015-10: 1999 - Methods of test for masonry; Part 10: Determination of dry bulk density of hardened mortar. Brussels: CEN – European Committee for Standardization.

DOI: 10.3403/01905430

Google Scholar

[24] EN 1015-11: 1999 - Methods of test for masonry; Part 11: Determination of flexural and compressive strength of hardened mortar. Brussels: CEN – European Committee for Standardization.

DOI: 10.3403/01905442

Google Scholar

[25] EN 1015-12: 2000 - Methods of test for mortar for masonry; Part 12: Determination of adhesive strength of hardened rendering and plastering mortars on substrates. Brussels: CEN – European Committee for Standardization.

DOI: 10.3403/02027531u

Google Scholar

[26] Brás, A.; Leal, M.; Faria, P. (2013).

Google Scholar

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