Recovery of MSWI and soil washing residues as concrete aggregates

Sorlini, Sabrina; Abbà, Alessandro; Collivignarelli, Carlo

doi:10.1016/j.wasman.2010.04.019

Cited by 76 publications

(48 citation statements)

References 11 publications

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“…Promising results were obtained owing of the high ash content, which provided a longer setting time and chemical immobilisation of some heavy metals. This indicates that there is a strong potential for the use of these mixtures in non-structural concrete as a result of the suitable compressive strength values and the retainer properties observed (Collivignarelli et al, 2002;Lampris et al, 2009;Pan et al, 2008;Polettini et al, 2001;Sorlini et al, 2011).…”

Section: Introductionmentioning

confidence: 93%

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: Introductionmentioning

confidence: 93%

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

et al. 2013

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“…Ferraris et al (2009) investigated that the use of 20 wt% of VBA as cement filler or 75 vol% of VBA as a substitute for natural aggregate provided the same mechanical properties as those of reference samples. Sorlini et al (2011) examined uses of calcareous Portland cement 42.5R and natural aggregate with 24 % replacement by washed BA in concrete having a characteristic 28-day compressive strength of 20 MPa.…”

Section: Introductionmentioning

confidence: 99%

“…In previous research, BA has often been studied combined with other waste as substitution materials used for concrete or mortar formulation; e.g., FA?BA (Ginés et al 2009), contaminated soil?BA (Sorlini et al 2011), colemanite waste?BA?FA (Kula et al 2001), FA?scrubber BA?glass frit (Lee et al 2008), and BA?recycled aggregate (Juric et al 2006). BA alone has rarely been studied as a raw material in the formulation of cement and concrete.…”

Section: Introductionmentioning

confidence: 99%

Optimal Use of MSWI Bottom Ash in Concrete

Zhang

Zhao

2014

Int J Concr Struct Mater

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An experimental investigation was carried out to evaluate the mechanical properties of concrete mixtures in which coarse aggregate was partially (30, 50 or 70 %) replaced with pre-washed municipal solid waste incineration (MSWI) bottom ash. Results indicated that bottom ash reduced the compressive strength, elastic modulus, and levels of heavy metals in leachate when used as a replacement for gravel, and that the maximum amount of MSWI bottom ash in concrete should not exceed 50 %. To analyze the effect mechanism of bottom ash in concrete, the degree of hydration and the following pozzolanic reaction characterized by the pozzolanic activity index, and the porosity distribution in cement mortar. The study indicates that improved properties of concrete are not solely later strength gain and reduced levels of heavy metals in leachate but also the progression of pozzolanic reactions, where a dense structure contains a higher proportion of fine pores that are related to durability.

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“…The ageing treatment (for 3-4 months) allowed to reduce the volumetric expansion of fresh Steel SLAG and to avoid cracking phenomena in concrete mixtures [7]. Moreover, the washing process applied to bottom ash from MSWI mass-burning kiln was able to reduce the contents of acid-soluble sulphates (that could involve concrete expansion) and water-soluble chlorides [22].…”

Section: Characterization Of Residuesmentioning

confidence: 99%

“…Using dosages of 400 and 600 kg/m 3 , the compressive strength values were higher than 15 MPa. Moreover, the use of the CEM42.5R, instead of the CEM32.5R, allowed to obtain an increase of concrete strength and could reduce the concrete swelling [22]. The dosage increase of residues from fluidized bed reactor (MSWI-B) led to an enhancement of compressive strength.…”

Section: Characterization Of Concrete Mixturesmentioning

confidence: 99%

Research experiences on the reuse of industrial waste for concrete production

2017

Self Cite

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Abstract. The aim of this study was to assess the feasibility of concrete production using different kinds of industrial wastes as "recycled aggregate". The wastes studied in this work were: fly ashes and slags from Electric Arc Furnace (EAF) steel plant; foundry sands produced from foundry dies; slags from lead processing; Waelz slags; solid residues from municipal solid waste incineration (MSWI) plant (with mass-burning kiln and fluidized bed reactor); sludge from industrial wastewater treatment plants. Good compressive strength (similar to natural concrete) was achieved after 28 days of curing by concrete mixtures obtained with the partial replacement (from 7% to 40% by weight) of natural aggregates with slags from lead processing, foundry sands, Waelz slags and bottom ashes from MSW incineration. The worst mechanical and leaching behaviours were shown by concrete samples containing EAF fly ashes and sludge from industrial wastewater treatment. For the residues with the best performance, concrete products (kerbs and flat tiles) were casted. Their mechanical and leaching characterization has shown that the reuse of these residues for concrete product is feasible.

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Recovery of MSWI and soil washing residues as concrete aggregates

Cited by 76 publications

References 11 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

Optimal Use of MSWI Bottom Ash in Concrete

Research experiences on the reuse of industrial waste for concrete production

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