Ronaldo Medeiros Junior

RESUMO

PhD in Durability and Service Life of Reinforced Concrete Structures. Professor at the Federal University of Parana (UFPR) – (Civil Engineering course – Department of Civil Construction). Researcher and Professor of the Post-Graduate Program in Civil Construction Engineering (PPGECC).

== Education and Career ==
2009 Civil Engineer – University of Pernambuco (UPE)

2011 Master’s degree – Aeronautics Institute of Technology (ITA)

2014 Doctorate – Aeronautics Institute of Technology (ITA)

2015 PhD – Aeronautics Institute of Technology (ITA)

2015 Professor at the Federal University of Parana (UFPR)

== Classes ==
Bachelor degree (UFPR):
* TC-021 Mecânica Geral I
* TC-027 Mecânica Geral III
* TC-030 Materiais de Construção Civil I
* TC-085 Monitoramento eco-eficiente e durabilidade de estruturas de concreto

Postgraduate (PPGECC):
* Previsão de Vida Útil de Estruturas de Concreto

== Main areas of interest ==
Civil Engineering, durability; service life models; corrosion; non-destructive testing; construction materials.

== Student supervision ==
2020 3D, 2M, 2B
2019 2D, 8M, 7B
2018 9M, 9B
2017 7M, 7B
2016 2M, 3B

== Main publications (last five years) ==
* Melara, E.K., Mendes, A.Z, Andreczevecz, N.C., Bragança, M.O.G.P., Carrera, G.T., Medeiros-Junior, R.A. [http://dx.doi.org/10.1016/j.conbuildmat.2020.118001 Monitoring by electrochemical impedance spectroscopy of mortars subjected to ingress and extraction of chloride ions. Construction and Building Materials, 2020].

* Mendes, S.E.S., Oliveira, R.L.N., Cremonez, C., Pereira, E., Pereira, E., Medeiros-Junior, R.A. [http://dx.doi.org/10.1007/s40999-019-00464-9 Mixture Design of Concrete Using Ultrasonic Pulse Velocity. International Journal of Civil Engineering, 2020].

* Medeiros-Junior, R.A., Bem, D.H. [http://dx.doi.org/10.1177/1369433220906932 Study of the environment factor from Fick’s and electrical resistivity models by simulation of chloride diffusivity prediction. Advances in Structural Engineering, 2020].

* Esteves, I.C.A., Medeiros-Junior, R.A., Medeiros, M.H.F. [http://dx.doi.org/10.1108/ijbpa-04-2018-0032 NDT for bridges durability assessment on urban-industrial environment in Brazil. International Journal of Building Pathology and Adaptation, 2018].

* Mendes, S.E.S., Oliveira, R.L.N., Cremonez, C., Pereira, E., Pereira, E., Medeiros-Junior, R.A. [http://dx.doi.org/10.1016/j.conbuildmat.2018.10.145 Electrical resistivity as a durability parameter for concrete design: Experimental data versus estimation by mathematical model. Construction and Building Materials, 2018].

* Bem, D.H., Lima, D.P.B., Medeiros-Junior, R.A. [http://dx.doi.org/10.1108/ijbpa-11-2017-0058 Effect of chemical admixtures on concrete’s electrical resistivity. International Journal of Building Pathology and Adaptation, 2018].

* Medeiros-Junior, R.A., Hino Junior, J.R., Monteiro, A.J.A.E., Bill, G.H., Kawanami, I.Y. [http://dx.doi.org/10.1007/s41024-018-0035-3 Accelerated carbonation effect on electrical resistivity and sorptivity of concrete. Journal of Building Pathology and Rehabilitation, 2018].

* Pinto, S.R., Macedo, A.L., Medeiros-Junior, R.A. [http://dx.doi.org/10.1007/s41024-018-0032-6 Effect of preconditioning temperature on the water absorption of concrete. Journal of Building Pathology and Rehabilitation, 2018].

* Balestra, C.E.T., Lima, M.G., Mendes, A.Z., Medeiros-Junior, R.A. [http://dx.doi.org/10.1590/s1983-41952018000300003 Effect of corrosion degree on mechanical properties of reinforcements buried for 60 years. Revista Ibracon de Estruturas e Materiais, 2018].

* Takagi, E.M., Lima, M.G., Helene, P., Medeiros-Junior, R. A. [http://www.inderscience.com/info/ingeneral/forthcoming.php?jcode=ijmpt Self-healing of self-compacting concretes made with blast furnace slag cements activated by crystalline admixture. International Journal of Materials and Product Technology, 2018].

* Souza, D.J., Yamashita, L.Y., Dranka, F., Medeiros, M.H.F., Medeiros-Junior, R.A. [https://doi.org/10.1061/(ASCE)MT.1943-5533.0002105 Repair mortars incorporating multiwalled carbon nanotubes: shrinkage and sodium sulfate attack. Journal of Materials in Civil Engineering, v. 29, p. n/a, 2017].

* Mazer, W., Lima, M.G., Medeiros-Junior, R.A. [http://www.icevirtuallibrary.com/doi/10.1680/jstbu.16.00153 Fuzzy logic for estimating chloride diffusion in concrete. Proceedings of the ICE – Structures and Building, v. Oct, p. n/a, 2017].

* Medeiros, M.H.F., Dranka, F., Souza, D.J., Medeiros-Junior, R.A. [http://www.icevirtuallibrary.com/doi/10.1680/jcoma.16.00049 Improvement of repair mortars using multi-walled carbon nanotubes. Proceedings of the ICE – Construction Materials, v. 170, p. n/a, 2017].

* Medeiros, M.H.F., Rocha, F.C., Medeiros-Junior, R.A., Helene, P. [http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-41952017000400864&lng=en&tlng=en Corrosion potential: influence of moisture, water-cement ratio, chloride content and concrete cover. Revista IBRACON de Estruturas e Materiais, v. 10, p. 864-885, 2017].

* Medeiros, M.H.F., Raisdorfer, J.W., Hoppe Filho, J., Medeiros-Junior, R.A. [https://link.springer.com/article/10.1007%2Fs41024-017-0023-z Partial replacement and addition of fly ash in Portland cement: influences on carbonation and alkaline reserve. Journal of Building Pathology and Rehabilitation, v. 2, p. 4, 2017].

* Medeiros-Junior, R. A., Balestra, C.E.T, Lima, M.G. [http://journals.sagepub.com/doi/abs/10.1177/0734242X16676544 Applicability of recycled aggregates in concrete piles for soft soil improvement. Waste Management and Research, 2017].

* Medeiros-Junior, R.A., Lima, M.G . [http://www.sciencedirect.com/science/article/pii/S0950061815308394 Electrical resistivity of unsaturated concrete using different types of cement. Construction & Building Materials, v. 107, p. 11-16, 2016].

* Balestra, C.E.T, Lima, M.G., Silva, A.R., Medeiros-Junior, R. A. [http://dx.doi.org/10.1061/(ASCE)MT.1943-5533.0001599 Corrosion degree effect on nominal and effective strengths of naturally corroded reinforcement. Journal of Materials in Civil Engineering, v. 28, p. 04016103, 2016].

== Book chapter ==
* Medeiros-Junior, R. A. Impact of climate change on the service life of concrete structures. In: Fernando Pacheco-Torgal; Robert Melchers; Nele de Belie; Xianming Shi; Kim Van Tittelboom; Andres Saez Perez. (Org.). Eco-efficient Repair and Rehabilitation of Concrete Infrastructures. 1ed.EUA: Elsevier – Woodhead Publishing, 2018, v. 1, p. 43-68.

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