Modelling of the corrosion of the cement paste by deionized water

Adenot, F.; Buil, M.

doi:10.1016/0008-8846(92)90092-a

Cited by 207 publications

(99 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As sulfates ingress inwards, calcium hydroxide leaches out of the cement paste, releasing Ca 2+ and OH À , plus alkalis (Adenot and Buil, 1992;Kamali et al, 2003Kamali et al, , 2008Planel et al, 2006;Revertegat et al, 1992;Roziere and Loukili, 2011). This is plotted in Figure 2, where the extent of leaching shows a linear relationship with the square root of time, typical of diffusionbased reactions.…”

Section: Leachingmentioning

confidence: 99%

“…This is plotted in Figure 2, where the extent of leaching shows a linear relationship with the square root of time, typical of diffusionbased reactions. With the leaching of these species, the pH of the pore solution is reduced causing calcium-silicate-hydrate to decalcify; this is marked by a gradual reduction in the calcium/ silicon of the phase (Adenot and Buil, 1992). The lower pH also causes ettringite to decompose to gypsum at a pH , 10 .…”

Section: Leachingmentioning

confidence: 99%

See 1 more Smart Citation

Current knowledge of external sulfate attack

Whittaker¹,

Black²

2015

Advances in Cement Research

View full text Add to dashboard Cite

This paper offers an update of the current understanding of sulfate attack, with emphasis on the sulfates present in an external water source percolating through, and potentially reacting with, the cement matrix. The paper considers the explanations put forward to explain sulfate attack, both from a chemical and microstructural perspective.Similarly, this paper reviews work on the physical damage caused by the precipitation of sulfate salts in porous materials. With the increased use of binary and ternary blends, this paper also considers the impact of binder composition on sulfate resistance, and similarly reviews how the nature of the sulfate species can affect the nature and extent of any deterioration. This then leads on to the important consideration of differences between field-and lab-based studies, reviewing the effect of various experimental parameters on sulfate resistance. This latter topic is of great importance to anyone who wishes to carry out such experiments.

show abstract

Section: Leachingmentioning

confidence: 99%

Section: Leachingmentioning

confidence: 99%

Current knowledge of external sulfate attack

Whittaker¹,

Black²

2015

Advances in Cement Research

View full text Add to dashboard Cite

show abstract

“…The same mathematical formalisms also apply the movement of a reaction front ( involving radionuclides) from inside the tank outward Thus the same dimensions are also what is needed to argue that the skirt would be a barrier to the escape of radionuclides. Although many refinements on this calculation are possible (e.g., Haworth et al, 1988;Alcorn et al, 1990;Walton et al, 1990;Lin, 1991 ;Adenot and Buil, 1992;Buil et al, 1992;Pihlajavaara, 1992) they all rest on the basic assumption of difision so it is unlikely that the basic picture would change appreciably with more advanced modeling. cm2/sec (Walton et al, 1990) …”

Section: Functionmentioning

confidence: 99%

Stabilization of in-tank residual wastes and external-tank soil contamination for the tank focus area, Hanford tank initiative: Applications to the AX Tank Farm

Balsley¹,

Krumhansl²,

Borns

et al. 1998

View full text Add to dashboard Cite

“…Ondrejka Harbulakova, P. Purcz, A. Estokova, A. Luptakova This results in the elusion of major components of concrete, and is called corrosion by leaching [1]. Degradation consists in dissolution of calcium and hydroxide ions out of the matrix, which causes an increase in porosity and transport properties of surface concrete [2,3].…”

mentioning

confidence: 99%

RELATION BETWEEN CONCRETE LEACHABILITY AND pH USING STATISTICAL APPROACH

Harbulakova¹,

Purcz²,

Estokova³

et al. 2016

ZNPRzBiS

View full text Add to dashboard Cite

RELATION BETWEEN CONCRETE LEACHABILITY AND pH USING STATISTICAL APPROACHAttack of external water to concrete results in the degradation of cement and changes the concrete pore water and solid phase composition. The leaching behaviour of cement-based products have been shown to be similar after assessing the leaching characteristics by means of a pH dependence leaching test. The paper is focused on the investigation of the leachability of the concrete samples of different composition due to distilled water and its relation to pH. Si, Ca, Al, Fe and Mn ions leached out from the cement matrix were measured after each of fives experimental cycles. Three sets of samples were studied: without fly ash, and containing coal fly as cement replacement (5 wt. % and 10% wt. respectively). Statistical methods were used for the intensity and course of deterioration assessment regarding a dependency of Si/pH, Ca/pH Al/pH and Fe/pH and Mn/pH for each type of samples. The correlation among leaching processes according to type of concrete were also statistically studied.

show abstract

Modelling of the corrosion of the cement paste by deionized water

Cited by 207 publications

References 1 publication

Current knowledge of external sulfate attack

Current knowledge of external sulfate attack

Stabilization of in-tank residual wastes and external-tank soil contamination for the tank focus area, Hanford tank initiative: Applications to the AX Tank Farm

RELATION BETWEEN CONCRETE LEACHABILITY AND pH USING STATISTICAL APPROACH

Contact Info

Product

Resources

About