@uenf.br
Laboratório de Engenharia Civil (LECIV)
Universidade Estadual do Norte Fluminense Darcy Ribeiro
Engineering, Civil and Structural Engineering, Computational Mechanics, Ceramics and Composites
Scopus Publications
Niander Aguiar Cerqueira, Victor Barbosa de Souza, and Afonso Rangel Garcez de Azevedo
Springer Nature Switzerland
N. A. Cerqueira, J. A. P. Madalena, B. S. Silva, and A. R. G. Azevedo
Springer Nature Switzerland
B. R. Maciel, E. D. Fizzera, T. E. S. Lima, N. A. Cerqueira, M. N. Barreto, S. N. Monteiro, C. M. F. Vieira, and A. R. G. Azevedo
Springer Nature Switzerland
L. M. Santos, E. D. Fizzera, T. E. S. Lima, C. M. F. Vieira, S. N. Monteiro, N. A. Cerqueira, M. N. Barreto, and A. R. G. Azevedo
Springer Nature Switzerland
Niander Aguiar Cerqueira, Victor Souza, Jonas Alexandre, Gustavo de Castro Xavier, Roman Fediuk, Sergio Neves Monteiro, Marcelo Neves Barreto, and Afonso R. G. de Azevedo
MDPI AG
In the search for better constructive efficiency and a reduction of the waste of construction materials, several researches have been performed in the last years around the world. Red ceramic blocks are artifacts widely used in civil construction around the world, and they result in a great consumption of raw materials and energy. The great innovation of this research was the development of ceramic blocks through an innovative method of pressing and dosing materials, replacing the traditional stage of extrusion in the manufacture of ceramics. In such a sense, a new manufacturing technology for ceramic blocks was proposed through the pressing process, adapting the soil-cement brick press machine, thus attaining more even pieces with greater compliance to the dimensions and preset geometry. In this work, the physical and mechanical features of the pressed and burned blocks (PBB) are produced in a partnership with Arte Cerâmica Sardinha, a traditional ceramic industry in the region of Campos dos Goytacazes, RJ, Brazil. It was sought to set the quality parameters for the blocks, to set their mechanical compressive strength, deformation modules and the Poisson coefficient. The blocks were tested in use by means of three layers of prism and small wall samples, and it was checked the fragile-type failure of the PBB. Results indicate that the blocks can be employed in small-sized construction works, as the characteristic compressive strength to block measured was 3.62 N/mm2 for average water absorption of 20.84%.
L. B. Oliveira, A. R. G. Azevedo, M. T. Marvila, C. M. Vieira, N. A. Cerqueira, and S. N. Monteiro
Springer International Publishing
Mariáh P. S. P. Soares, Niander A. Cerqueira, Felipe Fraga de Almeida, Afonso R. G. Azevedo, and Markssuel Teixeira Marvila
Springer International Publishing
L. R. Cruz, A. R. G. Azevedo, M. T. Marvila, A. S. A. Cruz, J. A. T. L. Júnior, N. A. Cerqueira, S. N. Monteiro, and C. M. F. Vieira
Springer International Publishing
Matheus Henriques Cordeiro, Victor Barbosa Souza, Amanda Camerini Lima, and Niander Aguiar Cerqueira
Springer International Publishing
N. A. Cerqueira, M. T. Marvila, A. R. G. de Azevedo, J. Alexandre, G. C. Xavier, and V. B. de Souza
FapUNIFESP (SciELO)
Abstract There are studies analyzing the parameters of structural masonry strength, however few are performed evaluating the interference of the mortar in the deformability parameters. The objective of this study was to verify the theories of elasticity (Hooke’s linear model and nonlinear models by Ghosh, Duffing, and Martin, Roth, and Stiehler) applied to structural masonry. Ceramic blocks were pressed and fired at 890 ºC and mortars prepared with the proportion 1:1:5:0.5:2 of cement: hydrated lime: sand: PVA binder: water. The materials were tested in compression individually and in prisms with and without the use of mortars. The results obtained with the linear elastic analysis were incoherent since the deformability modulus obtained for the mortar prisms was higher than those without mortar. Performing the analysis by nonlinear theories, it was found that the results obtained were more coherent, mainly by Duffing’s theory that uses one parameter for stiffness and another for damping of the material.
Jheison Lopes dos Santos, Niander Aguiar Cerqueira, Afonso Rangel Garcez de Azevedo, Alan Marinho Costa, M.T. Marvila, Daiane Cecchin, Marcio Zago Gomes, and Sergio Neves Monteiro
Trans Tech Publications, Ltd.
Civil construction is a sector of extreme impact on the Brazilian economy, both in terms of jobs as well as consumption of raw material and waste generation. Civil construction waste (CCW) represents a large part of the total mass of municipal solid waste in a medium and large city. An alternative to diminish these released wastes is to reuse them. In this work, a study was carried out using CCW both to produce concrete with sand substitution and as a small aggregate for use in mortar. The compression strength of structural concrete and mortar, with total and partial replacement of sand, was analyzed. In addition, the consistency of mortar with the replacing was also studied. The results of the compression test indicate superior quality for concretes (75wt% CCW) and mortar with CCW incorporation. The required amount of water for good workability in the modified mortar is 310 g, against 270 g for the reference mortar.
A. R. G. Azevedo, M. T. Marvila, J. P. Reis, E. B. Zanelato, A. L. F. Manhães, S. N. Monteiro, L. G. Pedroti, B. C. Mendes, N. A. Cerqueira, and V. Souza
Springer International Publishing
A.R.G. Azevedo, T.M. Marvila, W. Júnior Fernandes, J. Alexandre, G.C. Xavier, E.B. Zanelato, N.A. Cerqueira, L.G. Pedroti, and B.C. Mendes
Elsevier BV
A. R. G. Azevedo, B. C. Mendes, M. T. Marvila, J. Alexandre, E. B. Zanelato, G. C. Xavier, N. A. Cerqueira, S. N. Monteiro, and T. E. S. Lima
Springer International Publishing
A. R. G. Azevedo, J. Alexandre, M. T. Marvila, E. B. Zanelato, B. C. Mendes, N. A. Cerqueira, S. N. Monteiro, G. C. Xavier, L. G. Pedroti, and V. Souza
Springer International Publishing
M. T. Marvila, A. R. G. Azevedo, J. Alexandre, E. B. Zanelato, S. N. Monteiro, and N. A. Cerqueira
Springer International Publishing
Niander A. Cerqueira, Victor B. Souza, Guilherme M. R. Coutinho, and Lucas X. P. da Silva
Springer International Publishing
A. R. G. Azevedo, J. Alexandre, M. T. Marvila, E. B. Zanelato, G. C. Xavier, N. A. Cerqueira, V. B. Souza, T. E. S. Lima, and S. N. Monteiro
Springer International Publishing
Kayan A. Carneiro, Victor B. Souza, Niander A. Cerqueira, Lucas Costa, Amanda C. Lima, Afonso R. G. Azevedo, and Daniel P. Gallo
Springer International Publishing
Niander Aguiar Cerqueira, Victor Barbosa de Souza, Afonso Garcez de Azevedo, Priscila Oliveira Campos de Celebrini, Dienifer Daiana Konzen, Victor Tomazinho Bartolazzi, Mairyanne S. S. Souza, and Sergio Neves Monteiro
Springer International Publishing
Niander Aguiar Cerqueira, Victor Barbosa de Souza, Afonso Garcez de Azevedo, Anna Carolina Lopes Rabello, Renan Tavares Vicente, Amanda Camerini, and André Raeli Gomes
Springer International Publishing
A. R. G. Azevedo, J. Alexandre, G. C. Xavier, E. B. Zanelato, M. T. Marvila, N. A. Cerqueira, B. C. Mendes, and S. N. Monteiro
Springer International Publishing
Niander A. Cerqueira, Victor B. Souza, Igor W. D. C. Pereira, Rondinelli C. Ribeiro, Afonso G. Azevedo, Mairyanne S. Souza, and Victor T. Bartolazzi
Springer International Publishing
Niander A. Cerqueira, Victor B. Souza, Bruno Padilha, Pâmela Berçot, Afonso G. Azevedo, and Victor T. Bartolazzi
Springer International Publishing
N. A. Cerqueira, D. Choe, J. Alexandre, A. R. G. Azevedo, C. G. Xavier, and V. B. Souza
Springer International Publishing