Comportamento de placa finas de concreto têxtil sujeitas à compressão

Fernanda C. A. dos Santos¹; Daniel C. T. Cardoso¹

¹ PUC-Rio

doi:10.20906/CPS/CILAMCE2017-0293

Resumo

Textile Reinforced Concrete (TRC) is a composite material made of a fine grained concrete matrix with a textile as reinforcement. This material is commonly applied in the strengthening of existing structures but, nowadays, its use in structural building members is increasing. It has many advantages over traditional construction materials, such as its corrosion resistance and the possibility of designing thinner and lightweight concrete elements with high load-bearing capacities. This paper presents the results of an ongoing investigation on the behavior of thin-walled carbon-TRC plates subject to uniform compression. Relevant material properties determined experimentally are reported and the development of an analytical model able to predict non-linear axial-force-moment-curvature relationships (N-M-Φ) is described. To validate the model, four-point bending tests were conducted in TRC strips, showing a good agreement between theory and experiments. Finally, the results obtained from a Finite Element Model developed using Abaqus to simulate the behavior of TRC plates under in-plane compression loads are reported and aspects on the buckling behavior and strength are discussed.

Palavras-chave: textile reinforced concrete; composite material; thin-walled plates; compression