GUO, Chao; LU, Zhengran. A Comprehensive Research of the Air-void Defect of Concrete-filled Steel Tube. Periodica Polytechnica Civil Engineering, [S. l.], v. 65, n. 2, p. 474–485, 2021. 10.3311/PPci.15173. Disponível em: https://pp.bme.hu/ci/article/view/15173. Acesso em: 7 may. 2024.