Efeito do poliuretano com carvão refinado em argamassa de alta resistência
DOI:
https://doi.org/10.14295/holos.v25i1.12519Palavras-chave:
High-strength mortar, Sustainability, Compressive strength, Elastic modulus, Tensile strength, PorosityResumo
Este artigo investiga a influência da adição de poliuretano com carvão refinado em argamassas de alta resistência, avaliando suas propriedades mecânicas e físicas. Os testes realizados para este estudo incluíram difração de raios X, resistência à compressão, módulo de elasticidade e resistência à tração. Os resultados mostraram que a resistência à compressão da argamassa diminuiu quando o carvão refinado foi incorporado à argamassa de referência, e a inclusão de poliuretano nesta mistura levou a uma redução adicional na resistência à compressão. Adicionalmente, foi observada uma diminuição no módulo de elasticidade com a adição de carvão refinado, e a inclusão de poliuretano nesta mistura causou uma redução adicional. A porosidade da argamassa aumentou significativamente com a adição de poliuretano à argamassa contendo carvão refinado.
Em resumo, a adição de poliuretano e carvão refinado a argamassas de alta resistência compromete as suas propriedades mecânicas, nomeadamente através da redução da resistência à compressão, do módulo de elasticidade, da resistência à tração e do aumento da porosidade. Embora o poliuretano contribua para a flexibilidade e adesão entre as partículas, a sua interação com o carvão refinado cria uma estrutura mais porosa, prejudicando potencialmente a durabilidade e resistência do material.
Referências
18 05B, T.; TESTING, M. M. Masonry mortar testing. [S. l.: s. n.], 2020. Available from: https://api.semanticscholar.org/CorpusID:209765150. Access at: 29 nov. 2025.
ABNT. NBR 52, NBR NM 52: agregado miúdo, massa específica e massa específica aparente. Rio de Janeiro: ABNT, 2009.
ABNT. NBR 5738. Concreto, ensaio de compressão de corpos de prova cilíndricos conforme a 5738. Rio de Janeiro: ABNT, 2018.
ABNT. NBR 5739: concreto, ensaio de compressão de corpos de prova cilíndricos. Rio de Janeiro: ABNT, 2018.
ABNT. NBR 6118: projeto de estruturas de concreto, procedimento. Rio de Janeiro: ABNT, 2023.
ABNT. NBR 8522: concreto, determinação dos módulos estáticos de elasticidade e de deformação à compressão. Rio de Janeiro: ABNT, 2021.
ABNT. NBR 17054: agregados, determinação da composição granulométrica, método de ensaio. Rio de Janeiro: ABNT, 2022. Available from: www.abnt.org.br. Access at: 29 nov. 2025.
ABNT. NBR 16605: cimento Portland e outros materiais em pó, determinação da massa específica. Rio de Janeiro: ABNT, 2017. Available from: www.abnt.org.br. Access at: 29 nov. 2025.
AL KAHTANI, M. S. et al. Experimental study on the strength and durability related properties of ordinary Portland and rapid hardening Portland cement mortar containing polyurethane binder. Case Studies in Construction Materials, Amsterdam, v. 17, p. e01530, 2022. Available from: https://www.sciencedirect.com/science/article/pii/S2214509522006623. Access at: 29 nov. 2025.
FERNÁNDEZ MUÑIZ, Z. et al. Numerical study of concrete: a mesoscopic scale simulation methodology. Applied Sciences, Basileia, v. 14, n. 13, p. 5495, 2024. https://www.mdpi.com/2076-3417/14/13/5495. Access at: 29 nov. 2025.
FRIGIONE, M.; AGUIAR, J. L. B. Innovative materials for construction. Materials, Basileia, v. 13, n. 23, p. 5448, 2020. Available from: https://api.semanticscholar.org/CorpusID:227296392. Access at: 29 nov. 2025.
BHATT, J., B. H. et al. Advancements in cement technology: a comprehensive review of additives and their impact on material properties. International Journal of Research Publication and Reviews, [s. l.], v. 4, n. 12, p. 1105 1112, 2023. Available from: https://www.researchgate.net/publication/376391864_Advancements_in_Cement_Technology_A_Comprehensive_Review_of_Additives_and_Their_Impact_on_Material_Properties. Access at: 29 nov. 2025.
JONNALA, S. N. et al. A comprehensive study of building materials and bricks for residential construction. Construction and Building Materials, v. 425, p. 135931, 2024. Available from: https://www.sciencedirect.com/science/article/pii/S0950061824010729.
JÚLIO, E.; BOGAS, A.; COSTA, H. Special issue: structural concrete material, new trends for eco efficiency and performance. Materials, Basileia, v. 15, n. 23, p. 8360, 2022. Available from: https://www.mdpi.com/1996-1944/15/23/8360. Access at: 29 nov. 2025.
KAMAL, M. A. H. et al. Review on metakaolin impact on the workability and compressive strength of concrete. In: IOP CONFERENCE SERIES: EARTH AND ENVIRONMENTAL SCIENCE. IOP Publishing, 2024. p. 012085. Available from: https://iopscience.iop.org/article/10.1088/1755-1315/1347/1/012085/pdf. Access at: 29 nov. 2025.
MARTÍNEZ-GARCÍA, R. et al. Effect of pores on the mechanical and durability properties on high strength recycled fine aggregate mortar. Case studies in construction materials, Amsterdam, v. 16, p. e01050, 2022. Available from: https://www.sciencedirect.com/science/article/pii/S2214509522001826. Access at: 29 nov. 2025.
LU, C. et al. Research on the critical value of sand permeability particle size and its permeability law after mixing. Water, Australia, v. 16, n. 3, 2024. Available from: https://www.mdpi.com/2073-4441/16/3/393?utm_source=releaseissue&utm_medium=email&utm_campaign=releaseissue_water&utm_term=doilink16&recipient=aguadoc@gmail.com&subject=Water%2C%20Volume%2016%2C%20Issue%203%20%28February-1%202024%29%20Table%20of%20Contents&campaign=ReleaseIssue. Access at: 29 nov. 2025.
MANGI, S. A. et al. Influence of ground coal bottom ash on the properties of concrete. International Journal of Sustainable Construction Engineering and Technology, Malaysia, v. 9, n. 2, 2018. Available from: https://api.semanticscholar.org/CorpusID:139574230. Access at: 29 nov. 2025.
NAJEEB, Z.; MOSABERPANAH, M. A. Mechanical and durability properties of modified high performance mortar using cenospheres and nano silica. International Journal of Sustainable Construction Engineering & Technology, India, v. 362, n. 2, p. 129782, 2023. Available from: https://api.semanticscholar.org/CorpusID:252576866. Access at: 29 nov. 2025.
NBR 7211. Agregados para concreto: requisitos. [S. l.]: [s. n.], 2022.
NGO, S.; NGUYEN, N. T.; NGUYEN, X. H. Assessing the effect of GGBFS content on mechanical and durability properties of high strength mortars. Civil Engineering Journal, v. 8, n. 5, p. 938 950, 2022. Available from: https://api.semanticscholar.org/CorpusID:250099469. Access at: 29 nov. 2025.
POKORNÝ, J. et al. The role of high carbon additives on physical–mechanical characteristics and microstructure of cement-based composites. Buildings, United States, v. 13, n. 7, p. 1585, 2023. Available from: https://www.mdpi.com/2075-5309/13/7/1585. Access at: 29 nov. 2025.
PREETHI, M.; KUMAR, P. A.; HAMRAJ, M. Strength characteristics of high strength concrete with and without coarse aggregate. International Journal of Engineering and Advanced Technology, India, v. 9, n. 2, p. 4701 4704, 2019. Available from: https://www.researchgate.net/profile/Mohd-Hamraj-2/publication/348805622_Strength_Characteristics_of_High_Strength_Concrete_HSC_with_and_without_Coarse_Aggregate/links/601119f545851517ef1a269d/Strength-Characteristics-of-High-Strength-Concrete-HSC-with-and-without-Coarse-Aggregate.pdf. Access at: 29 nov. 2025.
RIBEIRO, A. J. H. et al. Análise das propriedades da argamassa com diferentes teores de grafite por substituição parcial de cimento Portland. Research, Society and Development, São Paulo, v. 11, n. 6, p. e49911629535, 2022. Available from: https://rsdjournal.org/index.php/rsd/article/download/29535/25439. Access at: 29 nov. 2025.
RUANO GUTIÉRREZ, E. et al. Physico mechanical characterization of masonry mortars for sustainable construction. Sustainability, [S. l.], v. 16, n. 14, 2024. Available from: https://oa.upm.es/89451/1/10254549.pdf. Access at: 29 nov. 2025.
SOLTANINEJAD, M. et al. Environmental friendly mortar produced with treated and untreated coal wastes as cement replacement materials. Clean Technologies and Environmental Policy, Germany, v. 23, n. 10, p. 2843 2860, 2021. Available from: https://api.semanticscholar.org/CorpusID:233667361. Access at: 29 nov. 2025.
TANG, S. et al. Structure, fractality, mechanics and durability of calcium silicate hydrates. Fractal and Fractional, Switzerland, v. 5, n. 47, p. 1 34, 2021. Available from: https://api.semanticscholar.org/CorpusID:236568070. Access at: 29 nov. 2025.
TRENTIN, P. O. et al. Análise da influência de carvão mineral em argamassas mistas, adição e substituição ao cimento Portland. Matéria, Rio de Janeiro, v. 27, n. 2, 2022. Available from: https://api.semanticscholar.org/CorpusID:255679387. Access at: 29 nov. 2025.
VITORINO, C.; SILVA, D. A. Efeito da nanossílica sobre as propriedades mecânicas de concretos de alta resistência. Concreto e Construções, [s. l.], n. 103, p. 74-79, 2021. Available from: https://scholar.archive.org/work/7e55tycz2jftvntl5y5jq4mgmm/access/wayback/http://doi.editoracubo.com.br/10.4322/1809-7197.2021.103.0008. Access at: 29 nov. 2025.
WANG, L. et al. Effect of calcium carbonate whisker and fly ash on mechanical properties of cement mortar under high temperatures. Advances in Materials Science and Engineering, United States, v. 2019, n. 1, p. 9430804, 2019. Available from: https://onlinelibrary.wiley.com/doi/abs/10.1155/2019/9430804. Access at: 29 nov. 2025.
WANG, Y. et al. The effect of powder activated carbon on mechanical properties and pore structures of cement based mortars. Construction and Building Materials, India , v. 316, p. 125798, 2022. Available from: https://www.sciencedirect.com/science/article/abs/pii/S0950061821035315. Access at: 29 nov. 2025.
XIA, Z. et al. Electrochemical exfoliation of graphite in H2SO4, Li2SO4 and NaClO4 solutions monitored in situ by Raman microscopy and spectroscopy. Faraday Discussions, United Kingdom, v. 227, p. 291 305, 2021. Available from: https://pubs.rsc.org/de-at/content/articlepdf/2021/fd/c9fd00123a. Access at: 29 nov. 2025.
YASEEN, S. A.; YISEEN, G. A.; LI, Z. Elucidation of calcite structure of calcium carbonate formation based on hydrated cement mixed with graphene oxide and reduced graphene oxide. ACS Omega, v. 4, n. 6, p. 10160 10170, 2019. Available from: https://pubs.acs.org/doi/pdf/10.1021/acsomega.9b00042. Access at: 29 nov. 2025.
ZHANG, X. et al. Experimental study on the mechanical properties of the fiber cement mortar containing polyurethane. Advances in Materials Science and Engineering, United States, v. 2021, p. 9956897, 2021a. Available from: https://onlinelibrary.wiley.com/doi/pdf/10.1155/2021/9956897. Access at: 29 nov. 2025.
ZHANG, X. et al. Experimental study on the mechanical properties of the fibercement mortar containing polyurethane. Advances in Materials Science and Engineering, United States, v. 1, p. 1 10, 2021b. Available from: https://onlinelibrary.wiley.com/doi/pdf/10.1155/2021/9956897. Access at: 29 nov. 2025.
ZHENG, G. et al. Research on the relationship between pore structure and the compressive strength of oil well cement. Energies, Switzerland, v. 16, n. 15, p. 1-18, 2023. Available from: https://www.mdpi.com/1996-1073/16/15/5650. Access at: 29 nov. 2025.
