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10.3390/ma17225475
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Article

Lavender and Black Pine Waste as Additives Enhancing Selected Mechanical and Hygrothermal Properties of Cement Mortars

by
Jarosław Strzałkowski
1,*,
Petrini Kampragkou
2,
Maria Stefanidou
2,
Agata Markowska-Szczupak
3,
Elżbieta Horszczaruk
1 and
Anna Głowacka
1
1
Faculty of Civil and Environmental Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 50A, 70-311 Szczecin, Poland
2
Laboratory of Building Materials, Department of Civil Engineering, Aristotle University of Thessaloniki, P.O. Box 456, Gr-54124 Thessaloniki, Greece
3
Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland
*
Author to whom correspondence should be addressed.
Materials 2024, 17(22), 5475; https://doi.org/10.3390/ma17225475
Submission received: 8 October 2024 / Revised: 4 November 2024 / Accepted: 6 November 2024 / Published: 9 November 2024
(This article belongs to the Special Issue Advance in Sustainable Construction Materials, Second Volume)
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Abstract

The paper presents the mechanical and hygrothermal properties of cement mortars containing bio-powders made from lavender waste and black pine wood. The wastes were mechanically ground with a hammer mill to a fraction not exceeding 0.5 mm and then dried in air-dry conditions. The influence of bio-additives in amounts of 1.5% and 2.5% of the overall mortar volume was tested. The aim of the paper was to determine the impact of bio-additives on the mechanical and hygrothermal properties of the tested cement mortars. This publication included tests of compressive and flexural strength, elastic modulus, water absorption, absorption due to capillary rise, sorption and desorption properties, thermal properties, microstructural tests using mercury intrusion porosimetry and SEM, and EDS. The main conclusions of the research indicate that mortars with both 1.5% and 2.5% bio-powders are characterized by strong bactericidal properties, lower sorption properties at high air humidity, lower thermal conductivity, reduced compressive strength by 22–27%, no significant effect on the flexural strength, and significant reduction in capillary action of mortars both with short-term and long-term water exposure.
Keywords: cement mortars; bio-powders; lavender powder; black pine powder; hydrothermal properties of mortars; mechanical properties of mortars cement mortars; bio-powders; lavender powder; black pine powder; hydrothermal properties of mortars; mechanical properties of mortars

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MDPI and ACS Style

Strzałkowski, J.; Kampragkou, P.; Stefanidou, M.; Markowska-Szczupak, A.; Horszczaruk, E.; Głowacka, A. Lavender and Black Pine Waste as Additives Enhancing Selected Mechanical and Hygrothermal Properties of Cement Mortars. Materials 2024, 17, 5475. https://doi.org/10.3390/ma17225475

AMA Style

Strzałkowski J, Kampragkou P, Stefanidou M, Markowska-Szczupak A, Horszczaruk E, Głowacka A. Lavender and Black Pine Waste as Additives Enhancing Selected Mechanical and Hygrothermal Properties of Cement Mortars. Materials. 2024; 17(22):5475. https://doi.org/10.3390/ma17225475

Chicago/Turabian Style

Strzałkowski, Jarosław, Petrini Kampragkou, Maria Stefanidou, Agata Markowska-Szczupak, Elżbieta Horszczaruk, and Anna Głowacka. 2024. "Lavender and Black Pine Waste as Additives Enhancing Selected Mechanical and Hygrothermal Properties of Cement Mortars" Materials 17, no. 22: 5475. https://doi.org/10.3390/ma17225475

APA Style

Strzałkowski, J., Kampragkou, P., Stefanidou, M., Markowska-Szczupak, A., Horszczaruk, E., & Głowacka, A. (2024). Lavender and Black Pine Waste as Additives Enhancing Selected Mechanical and Hygrothermal Properties of Cement Mortars. Materials, 17(22), 5475. https://doi.org/10.3390/ma17225475

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