2026-06-172026-06-172026-02-26CRUZ, Diogo Matheus Corrêa da. Estudo do concreto leve de alta resistência com substituição parcial do agregado miúdo por eps: correlação da ecoeficiênia e intensidade de carbono(CO2). Orientadora: Luciana de Nazaré Pinheiro Cordeiro. 2026. 28 f. Trabalho de Curso (Bacharelado em Engenharia Civil) – Faculdade de Engenharia Civil, Instituto de Tecnologia, Universidade Federal do Pará, Belém, 2026. Disponível em: https://bdm.ufpa.br/handle/prefix/9618. Acesso em:.https://bdm.ufpa.br/handle/prefix/9618This study investigates the mechanical behavior and carbon eco-efficiency of High Strength Lightweight Concrete (HSLC) with partial replacement of aggregate by Expanded Polystyrene (EPS) at 10%, 20%, and 30% levels. The methodology was based on Modified Andreasen particle packing and 𝐶𝑂2-𝑒𝑞 emission calculations to determine the Carbon Intensity Index (𝐶𝑖). Results show that the 10% EPS mix achieved 55.48 MPa strength and density below 2000 kg/m³, characterizing it as structural lightweight concrete. Although higher EPS contents reduce gross volume emissions, the 10% mix showed the best eco-efficiency, with the lowest carbon intensity per unit of strength (𝑘𝑔𝐶𝑂2/𝑀𝑃𝑎). It is concluded that the 10% EPS dosage is technically feasible and essential for industry decarbonization, balancing structural performance and environmental responsibility.Acesso AbertoConcreto leve de alta resistência (CLAR)Poliestireno expandido (EPS)intensidade de CarbonoHigh-Strength Lightweight Concrete (HSLC)Expanded Polystyrene (EPS)Carbon IntensityCNPQ::ENGENHARIAS::ENGENHARIA CIVILTrabalho de Curso - Graduação - Artigo