Effect of chemical treatment of MSWI bottom ash for its use in concrete

Kim, Jin‐Young; Nam, Boo Hyun; Muhit, Baig A. Al; Tasneem, Kazi Mahmuda; An, Jinwoo

doi:10.1680/macr.14.00170

Cited by 35 publications

(16 citation statements)

References 22 publications

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“…As such, metal extraction, washing and chemical treatments have been frequently required to minimize the hydrogen expansion by reducing the metallic aluminium content or stabilization by exhausting the expansive reactions before use. Measurement of the volume of hydrogen gas evolution and metallic aluminium content by Kim et al, (2015), showed effective reduction of both parameters after a chemical treatment with 1 mol/l of aqueous NaOH.…”

Section: Concretementioning

confidence: 99%

Municipal incinerated bottom ash characteristics and potential for use as aggregate in concrete

Lynn

Dhir

Ghataora

2016

Construction and Building Materials

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The use of municipal incinerated bottom ash (MIBA) as aggregate in concrete applications has been assessed through the analysis and evaluation of the globally published data. After appropriate pretreatments, MIBA can be used as fine or coarse aggregate in mortar, concrete and blocks. Full-scale operations have been undertaken with success, mainly in blocks. MIBA lightweight aggregate had similar properties to Lytag, though with marginally lower strength. Concrete containing MIBA lightweight aggregate achieved low density, high consistence properties, with strengths just below Lytag mixes. Replacing sand in foamed concrete, MIBA mixes satisfied the high flowability, low strength requirements.

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Section: Concretementioning

confidence: 99%

Municipal incinerated bottom ash characteristics and potential for use as aggregate in concrete

Lynn

Dhir

Ghataora

2016

Construction and Building Materials

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“…One of the beneficial utilisations of MSWI BA is in the area of road construction sector; for example, MSWI BA can be used the partial replacement of fresh fine aggregate mixed with Hot-Mix Asphalt (HMA) and Portland Cement Concrete (PCC) (Al An, Golestani, Nam, & Lee, 2015;Chen et al, 2008;Dubey & Townsend, 2007;Forteza, Far, Seguı´, & Cerdá, 2004;Hill, 2004;Kim, Tasneem, Nam, Yun, & Sohn, 2014;Kim, Nam, Al Muhit, Tasneem, & An, 2015;Li et al, 2012;Shi & Kan, 2009;Tasneem, Nam, & Eun, 2014;del Valle-Zermeño, Formosa, Chimenos, Martínez, & Fernández, 2013;Xue, Hou, Zhu, & Zha, 2009). Many studies have investigated both beneficial and side effects for the use of MSWI BA in HMA and PCC as an intact material (Al An et al, 2014An et al, , 2015Kim et al, 2014Kim et al, , 2015Kim et al, , 2016.…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have investigated both beneficial and side effects for the use of MSWI BA in HMA and PCC as an intact material (Al An et al, 2014An et al, , 2015Kim et al, 2014Kim et al, , 2015Kim et al, , 2016.…”

Section: Introductionmentioning

confidence: 99%

Leaching behaviour of municipal solid waste incineration bottom ash mixed with Hot-Mix Asphalt and Portland cement concrete used as road construction materials

Tasneem

Eun

Nam

2016

Road Materials and Pavement Design

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One of the beneficial utilisations of municipal solid waste incineration (MSWI) bottom ash (BA) is in the area of road construction sector: for example, the partial replacement of fresh aggregate in Hot-Mix Asphalt (HMA) and Portland cement concrete (PCC). However, the potential leaching of toxic elements (e.g. alkaline elements and heavy metals) from the BA mixed with milled HMA and crushed PCC is still a concern when used as 2nd-cycle recycled materials. This paper presents and discusses the chemical characteristics and leaching behaviour of MSWI BA when used in both HMA and PCC. Chemical analysis of MSWI BA was conducted by using petrographic analysis tools. The leaching characteristics of major alkaline and trace elements from the milled HMA and crushed PCC containing varied amounts of BA were investigated by Synthetic Precipitation Leaching Procedure (SPLP) batch testing. The release of most alkaline and heavy metals (except Mg and Si from HMA and Ca from PCC) is reduced when mixed with the HMA and PCC as adding 10-20% of BA due to the binding effect in asphalt and cement mixtures. The concentrations of most major alkaline elements (e.g. Ca, Al, Si, and Na) from the HMA and PCC with BA increased with increasing elapsed time due to availability controlled leaching. The release of all of the priority elements meets the criteria of the US Secondary Drinking Water Standard (except Al) and the EPA Multi-Sector General Permit for Stormwater Discharges Associated with Industrial Activity.

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“…Extensive efforts have been made to reuse MSWI FA and BA in concrete as replacements for either Portland cement or fine and coarse aggregates [27,130,[140][141][142][143][144][145][146][147][148][149][150]. Because fine and coarse aggregates occupy 70-80% of the total volume in concrete, it can be advantageous to replace some of the aggregates with MSWI ash [125].…”

Section: Pccmentioning

confidence: 99%

Municipal Solid Waste Incineration (MSWI) Ashes as Construction Materials—A Review

Cho

Nam

et al. 2020

Materials

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Over the past decades, extensive studies on municipal solid waste incineration (MSWI) ashes have been performed to develop more effective recycling and waste management programs. Despite the large amount of research activities and the resulting improvements to MSWI ashes, the recycling programs for MSWI ashes are limited. For instance, although the U.S. generates more MSWI ashes than any other country in the world, its reuse/recycle programs are limited; bottom ash and fly ash are combined and disposed of in landfills. Reuse of MSWI ashes in the construction sectors (i.e., geomaterials, asphalt paving, and concrete products) as replacements for raw materials is one of most promising options because of the large consumption and relatively lenient environmental criteria. The main objective of this study was to comprehensively review MSWI ashes with regard to specific engineering properties and their performance as construction materials. The focus was on (1) the current practices of MSWI ash management (in particular, a comparison between European countries and the U.S.), (2) the engineering properties and performance of ashes when they are used as substitutes of construction materials and for field applications, and (3) the environmental properties and criteria for the use of MSWI ashes. Overall, the asphalt and concrete applications are the most promising, from both the mechanical and leachate viewpoints. However, cons were also observed: high absorption of MSWI ash requires a high asphalt binder content in hot-mix asphalt, and metallic elements in the ash may generate H2 gas in the high-pH environment of the concrete. These side effects can be predicted via material characterization (i.e., chemical and physical), and accordingly, proper treatment and/or modified mix proportioning can be performed prior to use.

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Effect of chemical treatment of MSWI bottom ash for its use in concrete

Cited by 35 publications

References 22 publications

Municipal incinerated bottom ash characteristics and potential for use as aggregate in concrete

Municipal incinerated bottom ash characteristics and potential for use as aggregate in concrete

Leaching behaviour of municipal solid waste incineration bottom ash mixed with Hot-Mix Asphalt and Portland cement concrete used as road construction materials

Municipal Solid Waste Incineration (MSWI) Ashes as Construction Materials—A Review

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