Evaluation of pathological problems associated with carbonation and sulfates in a concrete tower with more than 50 years in service

This work presents and discuss the results of a corrosion inspection, as well as a repair proposal for the external walls of a reinforced concrete tower which is in the southern coast of the Veracruz state. The inspection included a drone guided damage survey together with physical, chemical, mechanical and electrochemical tests that allowed the concrete characterization and corrosion damage. The governing deterioration mechanism of the structure was carbonation of concrete. However, the sulfate emission in this industrial environment was reflected on the compressive resistance, cracks and delaminations. These conditions were taken into account on the proposed actions for repairing and extending the service life of the structure.

[1]  P. C. Borges,et al.  Evaluation of pathological problems associated with carbonation and sulfates in a concrete tower with more than 50 years in service , 2018 .

[2]  H. Jouhara,et al.  Mathematical model of sulphate ion concentration in a closed cooling system of a power plant , 2017 .

[3]  Wei Sun,et al.  Degradation mechanism of slag blended mortars immersed in sodium sulfate solution , 2015 .

[4]  Pedro Castro-Borges,et al.  Analysis of Tools to Evaluate Chloride Threshold for Corrosion Onset of Reinforced Concrete in Tropical Marine Environment of Yucatán, México , 2013 .

[5]  Arnaud Castel,et al.  Influence of steel–concrete interface condition on galvanic corrosion currents in carbonated concrete , 2010 .

[6]  Edgardo F. Irassar,et al.  Sulfate attack on cementitious materials containing limestone filler — A review , 2009 .

[7]  Marta Castellote,et al.  Effect of the marine environment on reinforced concrete durability in Iberoamerican countries: DURACON project/CYTED , 2007 .

[8]  M. Raupach,et al.  Modelling of reinforcement corrosion – Corrosion with extensive cathodes , 2006 .

[9]  Michael Raupach,et al.  Numerical models for the propagation period of reinforcement corrosion ‐ Comparison of a case study calculated by different researchers , 2006 .

[10]  Arnaud Castel,et al.  Effect of Reinforcing Bar Orientation and Location on Bond with Self-Consolidating Concrete , 2006 .

[11]  B. Möser,et al.  Influence of sulfate solution concentration on the formation of gypsum in sulfate resistance test specimen , 2006 .

[12]  Steen Rostam.  Vida útil de las estructuras de hormigón , 2006 .

[13]  O. Troconis de Rincón,et al.  Durability of concrete structures: DURACON, an iberoamerican project. Preliminary results , 2006 .

[14]  C. Andrade,et al.  Test methods for on-site corrosion rate measurement of steel reinforcement in concrete by means of the polarization resistance method , 2004 .

[15]  Fernanda Pereira,et al.  Manual de rehabilitación de estructuras de hormigón reparación, refuerzo y protección , 2003 .

[16]  Jan Skalny,et al.  Sulfate attack on concrete , 2001 .

[17]  Denis Mitchell,et al.  Investigation of "Top Bar" Effects in Beams , 1988 .