Zeta potential study of paste blends with slag

Elakneswaran, Yogarajah; Nawa, Toyoharu; Kurumisawa, Kiyofumi

doi:10.1016/j.cemconcomp.2008.09.007

Cited by 80 publications

(32 citation statements)

References 13 publications

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“…The GGBS and CS, in turn, favoured the increase in the electric double-layer, raising the absolute value of the zeta potential. The particles in paste TM had a more negative zeta potential than reported in the literature at increasing dosages of SP (44,45).…”

Section: Electrokinetic Studycontrasting

confidence: 45%

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Reología y potencial zeta de pastas de cemento con lodos de embalse calcinados y escorias granuladas de horno alto

Safi¹,

Benmounah²,

Saidi³

2011

Mater. construcc.

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Section: Electrokinetic Studycontrasting

confidence: 45%

“…Por su parte, la GGBS y los LC favorecían el aumento de la doble capa eléctrica, elevando de este modo el valor absoluto del potencial zeta. Las partículas de la pasta TM tenían un potencial zeta más negativo del indicado en la literatura a medida que aumentaba la dosis de SP (44,45).…”

Section: Electrokinetic Studyunclassified

Reología y potencial zeta de pastas de cemento con lodos de embalse calcinados y escorias granuladas de horno alto

Safi¹,

Benmounah²,

Saidi³

2011

Mater. construcc.

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“…This is attributed to the more refined pore structure of the hydrated cementitious material using the GGBS and the binding adsorption capacity which is chloride ions onto the hydrated slag walls. Elakneswaran et al 19) have reported that, in the hydrated cementitious materials containing GGBS, the negatively charged phases due to the zeta potential, the Blaine fineness, and the large amount of aluminum oxide are responsible for the chloride adsorption on the surface of GGBS. Mineral admixtures such as GGBS and fly ash reduce large pores in cement-based material with diameter exceeding 0.05 µm such as macro pore 17) .…”

Section: Chloride Ion Penetration Depthmentioning

confidence: 99%

Time Dependency on Chloride Diffusion of Ceramic Waste Aggregate Mortars Containing Ground Granulated Blast-Furnace Slag

Higashiyama

Sappakittipakorn

Mizukoshi

et al. 2015

J. Soc. Mat. Sci., Japan

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From our previous findings, the recycling of ceramic waste aggregate (CWA) in mortar has been proved an ecological means plus an excellent outcome against chloride ingress. The CWAs were electric porcelain insulator wastes supplied from an electric power company, which were crushed and ground to fine aggregate sizes. In this study, to further develop the CWA mortar as an eco-efficient, ground granulated blast-furnace slag (GGBS) was incorporated. The GGBS was utilized as a supplementary cementitious material (SCM) at three different replacement levels of 15, 30, and 45% by weight of cement. The time dependency of the GGBS on enhancing chloride resistance in the CWA mortars was experimentally assessed by using an electron probe microanalysis (EPMA). The tests were carried out on mortar samples after immersion in 5.0% NaCl solution for 24, 48, and 96 weeks. Another set of the mortar samples was exposed to a laboratory ambient condition for 24, 48, and 96 weeks and then followed with a carbonation test. The resistance to the chloride ingress of the CWA mortar becomes more effective in proportion to the replacement level of the GGBS. Meanwhile, the carbonation depth of the CWA mortar increases with increasing the GGBS. The relationship between the apparent chloride diffusion coefficient and the GGBS replacement level was shown along with the immersion time.

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“…In this respect, the most promising emerging approach is based on raw materials suitable for alkaline activation, which originate new binding materials generically known as alkaline cements 11,12 . The use of slag as supplementary cementitious material improves the durability of concrete as it reduces the chloride penetration achieved by GBFS has been confirmed by many different investigators 13,14 .…”

Section: Introductionmentioning

confidence: 99%

Corrosion of reinforcing bars embedded in alkali-activated slag concrete subjected to chloride attack

2011

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Steel bar embedded in an alkali-activated slag (AAS) concrete was tested under complete immersion, in 3.5% NaCl solution by weight of the slag. Ordinary Portland cement (OPC) was also tested for comparative purposes and exposed to the same solution. Monitoring of open-circuit potential, polarization resistance measurement and electrochemical impedance spectroscopy (EIS) were used to evaluate the corrosion behavior of steel bar. The corrosion resistances of AAS and OPC concretes were performed at 0, 3, 6, 9 and 12 months. Electrochemical measurements shows that AAS concrete presents passive corrosion behavior the first 3 months, after this period of time, it presents corrosion resistance decreased due to the chlorides presence at the steel/AAS interface. For 0 months immersion (28 days of curing) the AAS and OPC concretes presented a 10% of corrosion probability. After 3 months of immersion the tested AAS and OPC concretes showed similar behavior, the active potentials in the range from −0.2 to −0.6 V vs. Cu/CuSO 4, indicate a 90% probability of corrosion.

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Zeta potential study of paste blends with slag

Cited by 80 publications

References 13 publications

Reología y potencial zeta de pastas de cemento con lodos de embalse calcinados y escorias granuladas de horno alto

Reología y potencial zeta de pastas de cemento con lodos de embalse calcinados y escorias granuladas de horno alto

Time Dependency on Chloride Diffusion of Ceramic Waste Aggregate Mortars Containing Ground Granulated Blast-Furnace Slag

Corrosion of reinforcing bars embedded in alkali-activated slag concrete subjected to chloride attack

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