2025-03-312025-03-3124-11-07VALE, Bianca Soares; NASCIMENTO, Lívia Monise Rocha do. Análise de propriedades mecânicas e microestruturais de um solo-cimento melhorado com fibras de polipropileno. Orientadora: Luciana Carvalho Queiroz. 2024. 23 f. Trabalho de Curso (Bacharelado em Engenharia Civil) – Faculdade de Engenharia Civil, Instituto de Tecnologia, Universidade Federal do Pará, Belém, 2024. Disponível em: https://bdm.ufpa.br/jspui/handle/prefix/7930. Acesso em:.https://bdm.ufpa.br/jspui/handle/prefix/7930Soils with low bearing capacity or limited suitability for geotechnical applications pose significant challenges in construction. Consequently, there is increasing interest in exploring techniques to enhance their mechanical properties through diverse material combinations. This study examined how adding polypropylene fibers and and diferente cement contents affects the strength of a sandy soil from northern Brazil. Samples with 0% and 0.5% polypropylene fibers and 3% and 5% high early-strength Portland cement were tested. Unconfined compressive strength (UCS) tests and scanning electron microscopy were conducted to assess mechanical and microstructural properties. Results indicated a linear increase in strength with higher cement content. Fiber addition notably improved load-bearing capacity and provided greater ductility after failure. Microscopic analysis showed a denser, more cohesive cemented matrix, with polypropylene fibers contributing to better cohesion and stress distribution.Acesso AbertoSolo-cimentoReforço com fibraFibra de polipropilenoCompressão simplesSoil-cementFiber reinforcementPolypropylene fiberUnconfined compressionCNPQ::ENGENHARIAS::ENGENHARIA CIVIL::CONSTRUCAO CIVIL::MATERIAIS E COMPONENTES DE CONSTRUCAOTrabalho de Curso - Graduação - Artigo