ARAMID FIBERS AS PHYSICAL REINFORCEMENT AGENTS IN EXPANSIVE SOIL
DOI:
https://doi.org/10.63330/aurumpub.031-013Palabras clave:
Synthetic fibers, Problematic soil, Soil stabilization, MCT, GeotechnicsResumen
The stabilization of expansive soils, predominantly composed of smectitic clay minerals, is crucial in Geotechnical Engineering due to the critical behavior involving significant water absorption, volumetric deformations, and low bearing capacity. This applied research study investigated the effectiveness of incorporating aramid fibers into an expansive soil in the city of Pelotas/RS, taking advantage of aramid's properties of high tensile strength and chemical stability. The methodology, based on Atterberg limits tests and the Expedited Pellet Method (EPM), demonstrated that the fibers act as an efficient reinforcing agent. The addition of aramid promoted a reduction in the Plasticity Index (PI) to up to 10% (compared to 14% for the reference), suggesting an antiplastic effect restricting particle mobility. More significantly, the reinforcement drastically delayed post-cure water penetration by up to 300%, with the 1.5% fiber content registering only 0.7 mm of penetration after 24 hours. This performance is attributed to the formation of a three-dimensional network that acts as a hydraulic barrier, increasing pore tortuosity and mitigating diametrical contractions. In conclusion, the use of aramid presents promising technical effects in controlling soil expansion and plasticity, although its financial viability and the observed time-dependent behavior require caution and future studies.
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ABD MALIK, A. K. et al. Interpretation of soil grain size effect on electrical resistivity method. Physics and Chemistry of the Earth, v. 129, p. 103324, 2023.
ASTM INTERNATIONAL. ASTM D4318: Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils. West Conshohocken, PA: ASTM International, 2020.
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS (ABNT). NBR 6459: solo — determinação do limite de liquidez. Rio de Janeiro: ABNT, 2016. 5 p.
ASSOCIAÇÃO BRASILEIRA DE NORMAS TÉCNICAS (ABNT). NBR 7180: solo — determinação do limite de plasticidade. Rio de Janeiro: ABNT, 2016. 3 p.
AL-HOSAINAT, Ahmad et al. Evaluation of the factors affecting the performance of fiber-reinforced asphalt mixtures. Journal of Materials in Civil Engineering, v. 35, n. 2, p. 04022435, fev. 2023.
ALI, Muhammad et al. Engineering properties of expansive soil treated with polypropylene fibers. Geomechanics and Engineering, v. 22, n. 3, p. 227–236, 2020.
ALMAJED, Abdullah; LEMBOYE, Kehinde; MOGHAL, Arif Ali Baig. A critical review on the feasibility of synthetic polymers inclusion in enhancing the geotechnical behavior of soils. Polymers, v. 14, n. 22, p. 5004, nov. 2022.
D’ÁVILA, A. M.; HAX, S.; FREITAS, P. C. Expedited specification of materials for unpaved roads – 4th approximation. In: XI CONGRESSO NACIONAL DE GEOTECNIA E IV CONGRESSO LUSO-BRASILEIRO DE GEOTECNIA, 4., 2008, Coimbra, Portugal. Anais [...]. Coimbra: [s.n.], 2008.
DEROMBISE, G. et al. Morphological and physical evolutions of aramid fibers aged in a moderately alkaline environment. Journal of Applied Polymer Science, v. 123, n. 5, p. 3098–3105, set. 2011.
DÍAZ-LÓPEZ, J. L. et al. Geotechnical and engineering properties of expansive clayey soil stabilized with biomass ash and nanomaterials for its application in structural road layers. Geomechanics for Energy and the Environment, v. 36, p. 100496, dec. 2023.
FORTES, Rita Moura; MERIGHI, João Virgilio; NETO, Alexandre Zuppolini. Tablet method for expedited identification of tropical soils. In: ROAD CONGRESS, 2., 2002, Lisboa, Portugal. Proceedings [...]. Lisboa: [s.n.], 2002.
MO, Wenxuan et al. Elucidating the hornification mechanism of cellulosic fibers during the process of thermal drying. Carbohydrate Polymers, v. 289, p. 119434, 2022.
NOGAMI, J. S.; VILLIBOR, D. F. Identificação expedita dos grupos da classificação mct para solos tropicais. Congresso Brasileiro de Mecânica dos Solos e Engenharia de Fundações. Anais...Abms, 1994.
REDDY, Peddireddy Sreekanth et al. Simultaneous evaluation of montmorillonite and Na/Ca content for assessing unstabilized and stabilized natural expansive soils for geoengineering applications. International Journal of Geosynthetics and Ground Engineering, v. 10, n. 6, p. 95, dez. 2024.
REIS, A. F. S. M. et al. Long-term behaviour of coir-fibre-reinforced soils. Geotextiles and Geomembranes, v. 52, n. 1, p. 1-14, 2024.
SYED, Mazhar et al. Stabilization of expansive clays by combined effects of geopolymerization and fiber reinforcement. Journal of The Institution of Engineers (India): Series A, v. 101, n. 1, p. 163–178, mar. 2020.
TANASĂ, Fulga et al. Geotextiles: a versatile tool for environmental sensitive applications in geotechnical engineering. Textiles, v. 2, n. 2, p. 189–208, abr. 2022.
ZHANG, Ziyi et al. Simultaneously enhanced interfacial shear strength and tensile strength of heterocyclic aramid fiber by graphene oxide. Nano Research, v. 16, n. 10, p. 12286–12293, out. 2023.
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Derechos de autor 2026 Gustavo Luís Calegaro, Kelian Ramire Waskow Grellert, João Paulo dos Santos Simão, Ezequiel da Silva Tins, Rubiane Buchweitz Fick, Luís Eduardo Tavares Martins, Jessica Torres dos Santos, Jéssica Etcheverria do Prado Hartwig, Josiane Pinheiro Farias, Marcos Antonio da Silva, Rafael Miritz Bartz, Ana Clara Marins Mendes, Luiza Beatriz Gamboa Araújo Morselli, Thays França Afonso (Autor)
Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial-SinDerivadas 4.0.
