Characterization of cement mortars with regional organic and inorganic additives
Por:
Soria-Castro, M, Genescá-Llongueras, J, Hernández-Bolio, GI, Castro-Borges, P
Publicada:
10 may 2024
Resumen:
The present investigation establishes the basis for future studies in the southeast of M & eacute;xico for the improvement of building materials by combining regional organic and inorganic nanoparticles in admixtures to formulate cement mortars with durability potential in structures of concrete. The characterization of the organic extract of Albzia tomentosa by nuclear magnetic resonance (NMR) revealed the presence of epicatechin (tannin related) and sucrose. Calcium zinc hydroxide dihydrate nanoparticles (CZ NPs) showed the highest surface area of 60.7 m2 g-1. The electrical resistivity, propagation of ultrasound velocity and water absorption by capillarity properties were individually evaluated for the organic extract, the inorganic nanoparticles and their admixtures in cement mortars, at a curing time of 7, 28 and 96 days with and optimal concentration of 5 mg mL-1 of the added additives. The best results were obtained at 96 days showing slightly but clear improvement of the electrical resistivity (23.40 +/- 0.022 k Omega cm, 22.40 +/- 0.004 k Omega cm and 22.29 +/- 0.013 k Omega cm), propagation of ultrasound velocity (1370 +/- 10 m s-1, 1345 m s-1 +/- 6, 1310 +/- 9 m s-1) and capillary coefficient (0.0044 kg m-2s-1/2, 0.0045 kg m-2s-1/2 and 0.0049 kg m-2s-1/2) properties of the cement mortars with CZ NPs, extraction Albizia solution (EAS) and CZ NPs + EAS respectively when compared to the mortar control (19.91 +/- 0.036 k Omega cm, 1266 +/- 15 m s-1 and 0.0082 kg m-2s-1/2).
Organic and inorganic additives offer a sustainable solution for enhancing the durability of cement mortars.
Filiaciones:
Soria-Castro, M:
UNAM, UNITA, Unidad Invest & Tecnol Aplicadas, Unidad Invest & Tecnol Aplicadas,Parque Invest & I, Apodaca 66628, NL, Mexico
Genescá-Llongueras, J:
UNAM, UNITA, Unidad Invest & Tecnol Aplicadas, Unidad Invest & Tecnol Aplicadas,Parque Invest & I, Apodaca 66628, NL, Mexico
Hernández-Bolio, GI:
Ctr Invest & Estudios Avanzados IPN, Dept Fis Aplicada, Unidad Merida, Merida, Yucatan, Mexico
Castro-Borges, P:
Ctr Invest & Estudios Avanzados IPN, Dept Fis Aplicada, Unidad Merida, Merida, Yucatan, Mexico
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