Combined use of MSWI bottom ash and fly ash as aggregate in concrete formulation: Environmental and mechanical considerations

Ginés, O.; Chimenos, J.M.; Vizcarro, Albert; Formosa, J.; Rosell, Joan Ramón

doi:10.1016/j.jhazmat.2009.03.141

Cited by 208 publications

(92 citation statements)

References 25 publications

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“…Accordingly, apparent and relative densities (ρ a and ρ r respectively) as well as porosity for the hardened concrete were determined for these formulations (Table 4). As reported by Ginés et al (2009) the apparent density increases with the amount of BA in the mixture, whilst the relative density decreases (Ginés et al, 2009). The former depends on the degree of compacting, and the latter depends on porosity.…”

Section: Mechanical and Physical Propertiesmentioning

confidence: 65%

“…Each year, 35,000 tons of BA and 3,000 tons of APC residues are produced in this facility. The former is currently fully reused as a secondary building material and the latter is stabilized with Portland cement prior to landfill disposal (Ginés et al, 2009).…”

Section: Methodsmentioning

confidence: 99%

“…Comparison with respect to an optimum size distribution depicted by Fuller curve is also presented. Fuller curves are grading curves that give the minimum void space and closest packing for sands and mineral aggregates with different particle sizes (Ginés et al, 2009). They are commonly used as a reference in concrete mixture formulations (Fuller et al, 1907).…”

Section: Methodsmentioning

confidence: 99%

“…Ginés et al (2009) studied the suitability of some concrete formulations obtained from mixing BA and APC residues as aggregates. In this study mechanical properties as well as environmental behaviour were taken into account with promising results.…”

Section: Introductionmentioning

confidence: 99%

“…In this study mechanical properties as well as environmental behaviour were taken into account with promising results. They concluded that some of the formulations studied might be suitable for use as a nonstructural concrete, like pavers, mud slab concrete or Jersey concrete barriers (Ginés et al 2009). …”

Section: Introductionmentioning

confidence: 99%

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Aggregate material formulated with MSWI bottom ash and APC fly ash for use as secondary building material

et al. 2013

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The main goal of this paper is to obtain a granular material formulated with Municipal Solid Waste Incineration (MSWI) bottom ash (BA) and air pollution control (APC) fly ash to be used as secondary building material. Previously, an optimum concrete mixture using both MSWI residues as aggregates was formulated. A compromise between the environmental behaviour and the economy of the process was considered. Unconfined compressive strength and abrasion resistance values were measured in order to evaluate the mechanical properties. From these results, the granular mixture was not suited for certain applications owing to the high BA/APC fly ash content and low cement percentages used to reduce the costs of the final product.Nevertheless, the leaching test performed showed that the concentrations of all heavy metals were below the limits established by the current Catalan legislation for their reutilization. Therefore, the material studied might be mainly used in embankments, where high mechanical properties are not needed and environmental safety is assured.

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Section: Mechanical and Physical Propertiesmentioning

confidence: 65%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Aggregate material formulated with MSWI bottom ash and APC fly ash for use as secondary building material

et al. 2013

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Towards the Accurate Calculation of ¹⁸³W NMR Chemical Shifts in Polyoxometalates: The Relevance of the Structure

Vilà‐Nadal

Sarasa

Rodríguez‐Fortea

et al. 2009

Chemistry An Asian Journal

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DFT calculations were carried out to study (183)W NMR chemical shifts in the family of the Keggin anions with formula alpha-[XW(12)O(40)](q-) (X=B, Al, Si, P, Ga, Ge, As, Zn), in the beta- and gamma-[SiW(12)O(40)](4-) geometric isomers, in the derivative Dawson anion [P(2)W(18)O(62)](6-), and in the most symmetrical Lindqvist [W(6)O(19)](2-) anion and its derivative [W(10)O(32)](4-). In this article, we show that the geometry employed in the calculation of NMR chemical shifts in polyoxotungstates is extremely important if we want to be quantitative. Using very large basis sets of QZ4P quality and taking into account the conductor-like screening model (COSMO) to account for solvent effects (aqueous and organic solutions), good geometries were found for the polyoxoanions. From these optimal geometries the (183)W NMR chemical shifts were computed with the more standard basis sets of TZP quality and including spin-orbit corrections inside the zero-order regular approximation (ZORA) to describe the relativistic effects of the internal electrons. With this strategy the mean absolute error between experimental and theoretical values was found to be less than 10 ppm, which is similar to the experimental error. We also discuss how the geometry of the polyoxoanion influences on the shielding.

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Froth Flotation of Copper and Copper Compounds from Fine Fractions of Waste Incineration Bottom Ashes

Breitenstein

Elwert

Goldmann

et al. 2016

Chemie Ingenieur Technik

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In Germany about 5 million tons of municipal solid waste incineration (MSWI) bottom ashes are treated for metal recovery annually. With the actual processing metal recovery is realized down to 2 mm. The fractions < 2 mm are utilized without metal recovery. Due to high residual concentrations of non‐ferrous metals in these fractions, especially Cu, several thousand tons of metals are lost every year. This article presents an approach to recover Cu of fine fractions < 0.2 mm by froth flotation. Several collector regimes are screened and flotation parameters are varied. First results exhibit Cu recoveries of 50 % with Cu concentrations of about 5 %.

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Combined use of MSWI bottom ash and fly ash as aggregate in concrete formulation: Environmental and mechanical considerations

Cited by 208 publications

References 25 publications

Aggregate material formulated with MSWI bottom ash and APC fly ash for use as secondary building material

Aggregate material formulated with MSWI bottom ash and APC fly ash for use as secondary building material

Towards the Accurate Calculation of ¹⁸³W NMR Chemical Shifts in Polyoxometalates: The Relevance of the Structure

Froth Flotation of Copper and Copper Compounds from Fine Fractions of Waste Incineration Bottom Ashes

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Combined use of MSWI bottom ash and fly ash as aggregate in concrete formulation: Environmental and mechanical considerations

Cited by 208 publications

References 25 publications

Aggregate material formulated with MSWI bottom ash and APC fly ash for use as secondary building material

Aggregate material formulated with MSWI bottom ash and APC fly ash for use as secondary building material

Towards the Accurate Calculation of 183W NMR Chemical Shifts in Polyoxometalates: The Relevance of the Structure

Froth Flotation of Copper and Copper Compounds from Fine Fractions of Waste Incineration Bottom Ashes

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Towards the Accurate Calculation of ¹⁸³W NMR Chemical Shifts in Polyoxometalates: The Relevance of the Structure