Evaluation of the Mechanical and Physical Properties of Portland Cement Mortar with the Addition of Rosin Resin in Confined Masonry Walls

This study is justified by the need to improve the moisture-resistant properties of Portland cement mortar, one of the main problems in buildings located in humid areas, affecting both the durability and habitability of homes. The objective was to evaluate the impact of adding rosin resin on the mechanical and physical properties of mortar used in confined masonry walls. The main objective was to determine whether this addition improves impermeability and adhesion without significantly compromising structural strength. To this end, tests were conducted in accordance with Peruvian and Chilean technical standards, including prism compression tests, diagonal compression tests on low walls, flexural strength, water absorption, and shear adhesion tests, using mortars with rosin percentages of 0.2%, 0.4%, and 0.5% at different dosages. The results showed that the addition of rosin reduces the mortar's compressive and flexural strength, as well as its stiffness. However, it significantly improves impermeability and adhesion, especially at dosages of 0.2% and 0.4% resin. It was concluded that although the use of rosin diminishes certain mechanical properties, its physical benefits, such as reduced capillary absorption and increased adhesion, make it a viable alternative in homes with up to two floors, in contexts where humidity control is a priority over structural strength.

• Päätekijä: Puicon Rodriguez, Fabriccio Omar (author)
• Aineistotyyppi: article
• Kieli: spa
• Julkaistu: 2025
• Aiheet: resina de colofonia; mortero de cemento Portland; albañilería confinada; humedad; Portland cement mortar; rosin; confined masonry; humidity
• Linkit: https://revistadigital.uce.edu.ec/index.php/INGENIO/article/view/8254