Fly and bottom ashes from biomass combustion as cement replacing components in mortars production: Rheological behaviour of the pastes and materials compression strength

Maschio, S.; Tonello, Gabriele; Piani, L.; Furlani, Erika

doi:10.1016/j.chemosphere.2011.06.070

Cited by 95 publications

(66 citation statements)

References 21 publications

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“…[9][10][11][12][13]. In several other studies the fly ash investigated originated from other combustion systems like fluidized bed systems or the combustion system is not really specified [14][15][16][17]. But there is not very much information available on the dependence of the composition of the fly ash on the particle size.…”

Section: Introductionmentioning

confidence: 96%

Cyclone fly ash from a grate-fired biomass combustion plant: Dependence of the concentration of various components on the particle size

Lanzerstorfer

2015

Fuel Processing Technology

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Section: Introductionmentioning

confidence: 96%

Cyclone fly ash from a grate-fired biomass combustion plant: Dependence of the concentration of various components on the particle size

Lanzerstorfer

2015

Fuel Processing Technology

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“…Through the conversion of heavy metals into a less mobile form, Maschio et al [15] replaced commercial cement with different percentages of biomass bottom ash, Barbosa et al [16] demonstrated that the S/S materials have compressive strengths between 25 and 40 MPa and low emission levels of metals through leaching, and they were thus classified as non-hazardous materials. The most widely used S/S systems are cement-based materials due to their viability for forming durable monolithic materials that will not easily leach hazardous components under disposal conditions [17].…”

Section: Introductionmentioning

confidence: 99%

Reduction of Leaching Impacts by Applying Biomass Bottom Ash and Recycled Mixed Aggregates in Structural Layers of Roads

et al. 2016

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This research is focused on analyzing the environmental pollution potential of biomass bottom ashes as individual materials, as mixtures manufactured with biomass bottom ashes and granular construction aggregates, and these mixtures treated with cement. For the environmental assessment of all of the samples and materials mentioned, the following leaching procedures have been performed: the compliance batch test of UNE-EN 12457-3:2003 for aggregates and bottom ashes; the column test according to NEN 7343:1994 for the mixtures prepared in the laboratory; and the tank test by EA NEN 7375:2004 for analyzing the behavior of mixtures after their solidification/stabilization with 5% cement. After the discussion of the data, the reduction of the pollution load of the most hazardous biomass bottom ashes after their combination with different aggregates can be confirmed, which implies their possible application in civil infrastructures, such as filler embankments and road construction layers, without negatively impacting the environment. In addition, the positive effect of the stabilization/solidification of the cement-treated mixtures with a reduction of the heavy metals that were released at the highest levels, namely As, Hg Cr, Ni, Cu, Se and Mo, was proven.

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“…Their properties were directly depended on the mortar composition (Hong and Glasser 1999). The surface charge of C-S-H has been about zero when the calcium silicon (Ca/Si) ratio was about 1.2 (Maschio et al 2011;Glasser 1993).…”

Section: Resultsmentioning

confidence: 99%

“…The results of these interactions are the stabled forms of waste which are non-hazardous or less hazardous than raw material (Zheng et al 2010;Maschio et al 2011;Colangelo et al 2012). It is important to optimize the S/S process parameters to have adequate resistance of the end products to aggressive agents that can appear in the environment i.e.…”

Section: Introductionmentioning

confidence: 99%

Investigating the chemical stabilization of hazardous waste material (fly ash) encapsulated in Portland cement

Sobiecka

2013

Int. J. Environ. Sci. Technol.

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Portland cement has been suggested as an effective stabilization (physico-chemical) method for hazardous waste. This research explored the immobilization of metals in various mixtures of Portland cement and fly ash waste sampled from coal power plant in the province of Lodz, central Poland. The stabilization of fly ash in Portland cement was investigated under a wide range of pH conditions (3-12). Leachability tests were used to determine the efficiency of the encapsulation by studying the dissolution of alkaline metals (sodium, potassium) and alkaline earth metals (calcium, magnesium). The lowest value of leached metals was obtained for ratio of ash to cement of 1:10 in a case of sodium and calcium, while ratio 1.5 gave the lowest leached effects for potassium and magnesium. The high effectiveness of solidification/stabilization process was gained in high pH values (9-11).

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Fly and bottom ashes from biomass combustion as cement replacing components in mortars production: Rheological behaviour of the pastes and materials compression strength

Cited by 95 publications

References 21 publications

Cyclone fly ash from a grate-fired biomass combustion plant: Dependence of the concentration of various components on the particle size

Cyclone fly ash from a grate-fired biomass combustion plant: Dependence of the concentration of various components on the particle size

Reduction of Leaching Impacts by Applying Biomass Bottom Ash and Recycled Mixed Aggregates in Structural Layers of Roads

Investigating the chemical stabilization of hazardous waste material (fly ash) encapsulated in Portland cement

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