Bacharelado em Engenharia Civil

URI permanente desta comunidadehttps://ri.ifam.edu.br/handle/4321/746

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Controle de compactação dos solos por meio do frasco de areia com agregado miúdo da região metropolitana de Manaus-AM
(2025-07-21) Maquiné, Aldenei de Lima; Damasceno, Micael Felipe; Feitoza, José Costa
Currently, the sand bottle is used for control soils compaction in most earth works in the Amazonas, relating the apparent specific mass "in situ" with the apparent specific mass dry according to the optimum humidity obtained in the laboratory. This is a geotechnical test using washed, dried and standardized sand in the granulometric range between 0.80 and 0.60 millimeters. This research replaces the sand in the standardized bottle, with fine aggregate from the metropolitan region of Manaus-AM. The granulometry tests indicate that the sand collected from this research is very uniform, well graded and has a maximum characteristic diameter equal to 1.19 mm. The predominant granulometric fraction classifies the particulate material from Manaus as medium sand (56.67%), with apparent dry specific mass and grain mass respectively equal to 1.5118 g/cm³ and 2.6042 g/cm³. Performed the field tests were carried out in the parking lot of the Instituto Federal do Amazonas (IFAM), Manaus Centro Campus, obtaining the apparent specific masses "in situ" with the standard sand bottles equal to 1,727.74 kg/m³ and with fine aggregate from Manaus the value of 1,620.13 kg/m³. The Degree of Compaction was satisfactorily evaluated based on the relative percentage error, with a view to paving in the Amazonas.
Impermeabilização de lajes: uma comparação entre o uso de manta asfáltica e borracha líquida
(2025-01-28) Feijão, Glendda Feitosa; Barros, Laerte Melo; http://lattes.cnpq.br/0299419739606476; Barros, Laerte Melo; http://lattes.cnpq.br/0299419739606476; Silva, Fabio Martins da; http://lattes.cnpq.br/2714788689860282; Fernandes, Francisco José Rodrigues; http://lattes.cnpq.br/3166612623704256
This study presents a comparative analysis of two widely used methods for waterproofing slabs: asphalt membranes and liquid rubber. The research evaluated criteria such as ease of application, durability, cost, and environmental impact, considering a realistic scenario involving a 263.07 m2 area. The results showed that liquid rubber offers greater practicality and cost-effectiveness, being approximately 32% cheaper than asphalt membranes. However, asphalt membranes exhibited greater durability, estimated between 15 and 20 years, compared to 10 to 15 years for liquid rubber. Regarding environmental impact, both materials present challenges, such as low biodegradability and risks associated with improper disposal, requiring responsible practices to mitigate negative effects. This study contributes to more informed decisions in the construction sector, highlighting the benefits and limitations of each material for different project contexts.