Verification of laboratory–field leaching behavior of coal fly ash and MSWI bottom ash as a road base material

Schreurs, J.P.G.M.; Sloot, H.A. van der; Hendriks, Ch.F.

doi:10.1016/s0956-053x(99)00322-0

Cited by 48 publications

(21 citation statements)

References 3 publications

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“…MSWI ash typically contains various toxic organic substances, heavy metals, and salts particularly in the fly ash. At present, various researches inside and outside of Europe on MSWI bottom and fly ash are focused on safe disposal [11][12][13][14] and their utilization mainly for recycling into construction materials [15][16][17]. From time to time, many technologies have been developed for fly ash and can be grouped into two: (i) disposal of a treated (stabilized/solidified) ash and (ii) material recovery/utilization.…”

Section: Introductionmentioning

confidence: 99%

Wet-Treated MSWI Fly Ash Used as Supplementary Cementitious Material

Keppert

Siddique

Pavlík

et al. 2015

Advances in Materials Science and Engineering

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Municipal solid waste incineration (MSWI) is a common technique in treatment of domestic waste. This technique annually produces approximately 25 Mt solid residues (i.e., bottom and fly ash) worldwide which is also a major issue in current research. In this research we are concerned with reusing the fly ash (FA) as supplementary cementitious material (SCM) in concrete. Such application solves the problem with heavy metal immobilization as well. To remove the high content of undesired soluble salts, number of washing treatments has been applied. Chemical composition of FA has been examined before and after treatments. The impact of cement substitution by FA in concrete was evaluated by measurement of its compressive strength and durability.

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Section: Introductionmentioning

confidence: 99%

Wet-Treated MSWI Fly Ash Used as Supplementary Cementitious Material

Keppert

Siddique

Pavlík

et al. 2015

Advances in Materials Science and Engineering

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“…Millrath et al (2004) categorize the beneficial use of MSWI residues after application of the abovementioned stabilization methods, in four main applications: i) in landfills as daily cover or road-base material; ii) as construction material; iii) in underground disposal sites like mine remediation; and iv) in agriculture. Utilisation of BA and APC residues as roadbase material has been proposed by several authors (Schreurs et al, 2000). The release of contaminants such as road leachates entails a substantial risk for the environment due to the high toxicity of the heavy metals involved.…”

Section: Introductionmentioning

confidence: 99%

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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“…However, chlorine, zinc, copper, lead and chromium are often highly present in it since they are widely used in manufactured products that finally become waste [9][10][11]. Owing to this, the research carried on the reutilisation of BA has specially focused in the assessment of the long-term environmental behaviour that might lead to potential damages caused by leaching [12][13][14][15][16][17][18][19][20][21]. Therefore, prior reutilisation, the content of these heavy metals and metalloids in BA must be stabilised.…”

Section: Introductionmentioning

confidence: 99%

Influence of MSWI bottom ash used as unbound granular material on the corrosion behaviour of reinforced concrete

Valle-Zermeño

Medina²,

Chimenos

et al. 2015

J Mater Cycles Waste Manag

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The reutilisation of MSWI natural weathered bottom ash (WBA) in many applications such as road and underground constructions, embankments or as an aggregate replacement is a common practice in many developed countries. Its potential environmental risk has regularly been evaluated from the point of view of the leaching of heavy metals and metalloids. Nevertheless, the influence over steel rebar when reinforced concrete is exposed to the contact with WBA has been poorly assessed before. In this study, it has been possible to evaluate in terms of days the probability of corrosion in a common case of WBA reutilisation, which is in contact with reinforced concrete formulated with conventional Portland cement. The corrosion monitoring indicates that the probability of corrosion of steel rebar is higher than 90 % with a corrosion rate (CI) estimated to be 11.6 lm year -1 . The aggressive conditions imposed by WBA suppose an important withdrawal if the application of reutilisation involves contact with steel rebar.

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Verification of laboratory–field leaching behavior of coal fly ash and MSWI bottom ash as a road base material

Cited by 48 publications

References 3 publications

Wet-Treated MSWI Fly Ash Used as Supplementary Cementitious Material

Wet-Treated MSWI Fly Ash Used as Supplementary Cementitious Material

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

Influence of MSWI bottom ash used as unbound granular material on the corrosion behaviour of reinforced concrete

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