Using of an auxetic structure as reinforcement of a bending reinforced concrete beam
Künye
Baran, T.(2019). Using of an auxetic structure as reinforcement of a bending reinforced concrete beam. Journal of Mechanics Engineering and Automation, 1(1), 1-16. DOI: 10.17265/2159-5275/2019.01.001Özet
: Materials which have negative Poisson’s ratio are entitled as auxetics. Auxetics can be designed as micro- to macro-sized
structures. The use of auxetics in civil engineering structures has been studied only to a limited extent. In this study, a re-entrant
medium-size auxetic structure is employed as reinforcement of a reinforced concrete beam. The beam is subjected to static and
dynamic loading conditions and then investigated by means of maximum vertical displacements of the beam. Besides, normal
stresses and shear stresses of the concrete are also assessed. To interpret the performance of the auxetic reinforcement, obtained
results are compared with the results of another beam which has non-auxetic reinforcement. The results show that these structures
behave with bending compatibility as expected and due to the negative Poisson’s ratio, they led to shear strength increase. Auxetic
structures can be employed as reinforcement in a beam. Besides, they can be employed without concrete to increase the shear
strength in the case of high shear and impact strength if it is needed.