Evaluación del estado de elementos estructurales del Mercado de Legazpi: Ataque por sulfatos al hormigón y corrosión de las armaduras

Chinchón-Payá, Servando; Torres, Julio; Rebolledo, Nuria; Sánchez, Javier

doi:10.3989/ic.76737

Cited by 3 publications

(2 citation statements)

References 25 publications

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“…This method uses a probe fitted with four electrodes and has been successfully applied for the assessment of the corrosion of steel (21). One of the advantages of the four-electrodes probe is its non-destructiveness, which makes it especially suitable for the evaluation of existing structures (22,23).…”

Section: Introductionmentioning

confidence: 99%

Análisis de factores que afectan a algunos métodos de ensayo para la medida de las prestaciones de durabilidad del hormigón

et al. 2023

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Algunos códigos de hormigón incluyen, entre otras medidas para asegurar la durabilidad de las estructuras de hormigón, la medida de determinadas propiedades que pueden ser un índice indirecto para evaluar la durabilidad del hormigón sometido a ciertos tipos de ambiente. Este trabajo tiene por objeto analizar la influencia de varios factores (naturaleza del árido, relación agua/cemento, tratamiento previo), en los resultados obtenidos sobre hormigones fabricados con áridos de diferente naturaleza, comunes en amplias zonas de la Península Ibérica, al medir dos posibles indicadores de durabilidad: la profundidad de penetración de agua bajo presión, empleada en la reglamentación española, y la resistividad.

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Section: Introductionmentioning

confidence: 99%

Análisis de factores que afectan a algunos métodos de ensayo para la medida de las prestaciones de durabilidad del hormigón

et al. 2023

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“…These sulphates will not be harmful if they are not mobilized and react with the compounds mentioned above. There are also cements that, due to their lower calcium aluminate content and/or the presence of substituent additions, are more resistant to sulphates [5].…”

Section: Introductionmentioning

confidence: 99%

Quantification of Chlorides and Sulphates on Concrete Surfaces Using Portable X-ray Fluorescence. Optimization of the Measurement Method Using Monte Carlo Simulation

2021

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A correct assessment of the pathologies that can affect a reinforced concrete structure is required in order to define the repair procedure. This work addresses the challenge of quantifying chlorides and sulphates directly on the surface of concrete. The quantification was carried out by means of X-ray fluorescence analysis on the surface of concrete specimens at different points with portable equipment. Concrete prisms were made with different amounts of NaCl and Na2SO4. To avoid the influence of coarse aggregate, a qualitative estimate of the amount of coarse aggregate analyzed has been made, although the results show that there is no significant influence. Monte Carlo simulations were carried out in order to establish the necessary number of random analyses of the mean value to be within an acceptable range of error. In the case of quantifying sulphates, it is necessary to carry out six random analyses on the surface, and eight measurements in the case of quantifying chlorides; in this way, it is ensured that errors are below 10% in 95% of the cases. The results of the study highlight that a portable XRF device can be used in situ to obtain concentrations of chlorides and sulphates of a concrete surface with good accuracy. There is no need to take samples and bring them to a laboratory, allowing lower overall costs in inspection and reparation works.

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Durability of a reinforced concrete structure exposed to marine environment at the Málaga dock

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Ramos

Chinchón-Payá

et al. 2022

Case Studies in Construction Materials

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Evaluación del estado de elementos estructurales del Mercado de Legazpi: Ataque por sulfatos al hormigón y corrosión de las armaduras

Cited by 3 publications

References 25 publications

Análisis de factores que afectan a algunos métodos de ensayo para la medida de las prestaciones de durabilidad del hormigón

Análisis de factores que afectan a algunos métodos de ensayo para la medida de las prestaciones de durabilidad del hormigón

Quantification of Chlorides and Sulphates on Concrete Surfaces Using Portable X-ray Fluorescence. Optimization of the Measurement Method Using Monte Carlo Simulation

Durability of a reinforced concrete structure exposed to marine environment at the Málaga dock

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