Santos, C.C.Rodrigues, João PauloCaetano, Hugo2019-04-302019-04-302017SANTOS; Cristina Calmeiro dos; RODRIGUES, João P. C.; CAETANO, Hugo (2017) - Compressive strength at high-temperatures of concretes made with textile and steel recycled fibers. In International Workshop on Concrete Spalling due to Fire Exposure, 4, Borås,12-13 outubro - Proceedings. Boras: Research Institutes of Sweden. p.73-81ISSN 0284-5172http://hdl.handle.net/10400.11/6500This paper presents the results of an experimental research on the ambient and high-temperature compressive strength of concretes made with steel or textile fibers from recycled tires. The studied compositions included a reference (RC), two textile fibers (TF) and two steel fibers (SF) concretes. The other aggregates were crushed ones and natural sand and the cement content 400kg/m3 for a water/cement ratio of 0.31. The specimens were tested in compression for different levels of temperature (20, 300, 500 and 700ºC). The specimens were heated, under loading, inside a tubular furnace accomplished to a tensile/compression machine. During the heating, the specimens were subjected to a constant loading level of 0.5fcd. The results of this experimental program showed that steel and textile fibers are a good solution in the compressive behavior of the concrete regarding to cracking control. However, some difficulties in the concrete preparation were experienced as the mixing of fibers.engConcreteRecycled fibersHigh temperatureCompressive strengthconference object