SANTOS; 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.73-81
ISSN 0284-5172
Title
Compressive strength at high-temperatures of concretes made with textile and steel recycled fibers
Subject
Concrete Recycled fibers High temperature Compressive strength
This 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. info:eu-repo/semantics/publishedVersion
