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- W4379380578 abstract "Advances in research, several demands, and challenges of modern construction motivated the Ultra High-Performance Concrete (UHPC) development. High compressive and tensile strength, ductility, self-compacting, and high durability are characteristics of the UHPC. The mentioned material allows more durable structures with high possible slenderness and enables the reduction or elimination of passive flexural and shear reinforcements. In this context, this study presents a case study and a comparative analysis of prestressed girders with UHPC and with a 45-MPa concrete. The section height and area, material volume and weight, reinforcement, ultimate resistance bending moment, shear, deflections, and costs were assessed. It was possible to reduce the volume and weight by 48% and 42% for the beams designed with UHPC with nominal lengths of 20m and 35m, respectively. A total elimination of passive reinforcement the UHPC was considered, which is an essential factor to consider regarding cost. Although the initial cost of UHPC solution is relatively higher when compared to conventional concretes analyzing in the short term, its use has some advantages in relation to prestressed beams in class C45 concrete. Considering a long-term economy, it is believed that the high initial cost may dissolve with the lowest maintenance and repair needs over the structure lifetime, due to its high durability." @default.
- W4379380578 created "2023-06-06" @default.
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- W4379380578 date "2023-06-04" @default.
- W4379380578 modified "2023-10-18" @default.
- W4379380578 title "Optimization of Prestressed Precast Girders with Ultra High-Performance Concrete" @default.
- W4379380578 doi "https://doi.org/10.21838/uhpc.16743" @default.
- W4379380578 hasPublicationYear "2023" @default.
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