Interaction between sulfate and chloride solution attack of concretes with and without fly ash

Jin, Zuquan; Sun, Wei; Zhang, Yunsheng; Jiang, Jiuchuan; Lai, Jinxing

doi:10.1016/j.cemconres.2007.02.016

Cited by 282 publications

(64 citation statements)

References 8 publications

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“…This may cause enhanced corrosion rates or may be associated with changes in cement chemistry as described by other litretures. (Pradhan, 2014;Maslehuddin and Paget.1997;Dehwah et al, 2002Dehwah et al, ,2003Saleem et al, 1996;AlAmoudi et al, 1993AlAmoudi et al, ,1995Holden et al, 1983;Yonezawa, 1989;Zuquan, et al 2007). Supporting results were found in corrosion potential, corrosion current density and visual observation, .…”

Section: 411grout Cylinder Testsupporting

confidence: 64%

“…As literatures reported (Pradhan, 2014;Maslehuddin and Paget.1997;Dehwah et al, 2002Dehwah et al, ,2003Saleem et al, 1996;Al-Amoudi et al, 1993,1995Holden et al, 1983;Yonezawa, 1989;Zuquan, et al 2007) the presence of sulfate ions in chloride solution did influence the corrosion rate. The presence of sulfate ion will reduce the chloride binding capacity of cement, therefore releasing the chloride ion into pore solution which can cause steel depasivation by increasing in sulfate ion concentration.…”

Section: Combined Sulfate and Chloridesupporting

confidence: 57%

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On the Role of the Pore Water Chemistry of Deficient Post-Tension Grout to Promote Steel Corrosion

Permeh¹

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Section: 411grout Cylinder Testsupporting

confidence: 64%

Section: Combined Sulfate and Chloridesupporting

confidence: 57%

On the Role of the Pore Water Chemistry of Deficient Post-Tension Grout to Promote Steel Corrosion

Permeh¹

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“…In a real environment the combined effect of sulfate and chloride has been found to be yet more damaging for the structural integrity of reinforced concrete and this conclusion bears the decision taken in the present study to switch, at a given time, from sulfates only contamination to a combination of sulfates and sodium chloride (15)(16)(17)(18).…”

Section: Introductionmentioning

confidence: 74%

Acción externa acelerada de sulfatos y cloruros en el estudio de la corrosión del acero en tracción en el hormigón armado

et al. 2017

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ABSTRACT:Corrosion of the reinforcing steel may cause significant loss of strength of reinforced concrete structures. The study focuses on accelerating such corrosion and examining the degradation of (i) the compressive strength of concrete due to sodium sulfate in a wet atmosphere; and (ii) the flexural strength by a solution of sodium sulfate and sodium chloride. Three types of concrete were used and different beam specimens were reinforced by steel rebars of different diameters (6, 8 and 10mm), part of the beams being pre-cracked. The concrete with least strength allowed higher sulfate penetration along the entire process and the compressive strength increased slightly, possibly due to lower porosity of concrete after contamination. The results of the flexural tests showed decrease of strength in all cases. Pre-cracked beams exhibited smaller influence of porosity of concrete. Beams with 6mm rebars showed the largest loss of strength due to the contamination and corrosion process. RESUMEN: Acción externa acelerada de sulfatos y cloruros en el estudio de la corrosión del acero en tracción en el hormigón armado. La corrosión de la armadura de acero de refuerzo puede causar una disminución de la resistencia de las estructuras de hormigón armado. Este estudio se centra en la aceleración artificial de tal corrosión examinando la degradación (i) de la resistencia a compresión del hormigón debida al sulfato de sodio en medio húmedo; y (ii) de la resistencia a flexión causada por una solución de sulfato de sodio y cloruro de sodio. Se han utilizado tres clases de hormigón y vigas con refuerzo de diferentes diámetros (6, 8, 10 mm); algunas de las vigas fueron pre-fisuradas. El hormigón con menor resistencia permitió mayor penetración de los sulfatos y la resistencia a compresión aumentó, posiblemente debido a la menor porosidad después de la contaminación. Los ensayos de flexión mostraron que la resistencia decrecía en todos los casos. Las vigas pre-fisuradas mostraron menor influencia de la porosidad. Las vigas armadas con barras de 6 mm de diámetro tuvieron mayor pérdida de resistencia.

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“…The concentrations of chloride (48 mg L −1 ) and sulfate (105 mg L −1 ) are also well below the concrete mixing water limits of 500 and 3000 mg L −1 respectively. According to Zuquan et al (2007;Zhang et al, 2013), chlorides promote corrosion when the concrete is reinforced with steel bars and high sulfate concentration leads to reduced strength in concrete. The concentrations of chloride, sulfate and total solids satisfy the effluent limitations and are not expected to have a significant impact on concrete specimens.…”

Section: Chemical Test Resultsmentioning

confidence: 99%

“…The most important chemicals that are controlled in concrete production include sulfates and chlorides. According to Zuquan et al (2007;Zhang et al, 2013), the chlorides promote corrosion when the concrete is reinforced with steel bars and high sulfate concentration leads to reduced strength in concrete. It is therefore very important to examine the mixing water for these types of pollutants in order to ensure the durability of concrete when using waste water effluents for concrete production.…”

Section: Quality Of Concrete Mixing Watermentioning

confidence: 99%

Fresh Water Savings Through the Use of Municipal Effluents in Concrete Pavement

Chola¹,

Luster‐Teasley²,

Jha³

et al. 2015

American Journal of Environmental Sciences

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Wastewater reuse presents a promising solution to the growing pressure on the world's water resources. The use of municipal wastewater effluents for concrete production in the construction industry would result in energy and water savings leading to conservation and sustainability of our water resources. In this research, to promote and increase the reuse of wastewater in construction industry, both chemical and bacteria analyses were performed to ensure the recommended quality for concrete mixing water and the compressive strength of concrete specimens made with wastewater effluents was investigated and compared to specimens made with fresh water. Statistical analysis of the strength results showed that at 95% confidence interval, the compressive strengths of the control specimens and those of test specimens are not statistically different.

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Interaction between sulfate and chloride solution attack of concretes with and without fly ash

Cited by 282 publications

References 8 publications

On the Role of the Pore Water Chemistry of Deficient Post-Tension Grout to Promote Steel Corrosion

On the Role of the Pore Water Chemistry of Deficient Post-Tension Grout to Promote Steel Corrosion

Acción externa acelerada de sulfatos y cloruros en el estudio de la corrosión del acero en tracción en el hormigón armado

Fresh Water Savings Through the Use of Municipal Effluents in Concrete Pavement

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