Geoenvironmental behavior of foundry sand amended mixtures for highway subbases

Güney, Yücel; Aydilek, Ahmet H.; Demirkan, M. Melih

doi:10.1016/j.wasman.2005.06.007

Cited by 95 publications

(44 citation statements)

References 11 publications

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“…2), the EDS of the waste sand indicated the presence of Al-Si material incrusted on the grain sand. This phenomenon is possibly attributed or derived from the main cast alloy ingredient as reported by [19], [20], and [21]. In addition to that, the observed sand grains morphology change, supports the new phase crystalline phase (anorthite) notice under XRD (spectra 1).…”

Section: Sand Grains Morphological Investigation (Sem-eds)supporting

confidence: 78%

Physico-Chemical Characterization of South African Waste Moulding Sands

Nyembwe

Makhatha

Madzivhandila

2016

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Abstract. Dry analysis techniques including X-ray fluorescence (XRF), X-ray diffraction (XRD), Scanning Electron Microscope (SEM-EDS) and Fourier Transform Infra-red (FTIR) have been used to assess the Physico-chemical of waste sand samples, obtained from different local foundry. The casting process involved included Aluminum in shell sand, brass under alky urethane, grey iron in greensand moulding, high chrome using furan sand, steel casting in alkaline phenolic and lastly cast iron from greensand mould.The study revealed the transformations and changes which have taken place in the waste sand due to the casting process, in terms of chemical composition, mineralogy, morphology and bonding types. The study demonstrated that the waste sand after the casting process was a completely new material, compared to the original virgin sand used for moulding process.

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Section: Sand Grains Morphological Investigation (Sem-eds)supporting

confidence: 78%

Physico-Chemical Characterization of South African Waste Moulding Sands

Nyembwe

Makhatha

Madzivhandila

2016

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“…Despite these benefits, the beneficial use WFSs has been constrained by many local and state governments due to uncorroborated concerns over potential contamination with metals. However, recent research has shown that the majority of foundry sands are a low contaminate waste with a low leaching potential when beneficially used in unencapsulated applications (Guney et al, 2006;Deng and Tikalsky, 2008;Stehouwer et al, 2010). Table 4 presents a comparison of mean concentrations of critical trace metals in WFSs and North American surface soils to soil screening levels (SSLs) used in Argentina.…”

Section: Resultsmentioning

confidence: 99%

Analysis of total metals in waste molding and core sands from ferrous and non-ferrous foundries

Miguel

Ippolito

Leytem

et al. 2012

Journal of Environmental Management

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a b s t r a c tWaste molding and core sands from the foundry industry are successfully being used around the world in geotechnical and soil-related applications. Although waste foundry sands (WFSs) are generally not hazardous in nature, relevant data is currently not available in Argentina. This study aimed to quantify metals in waste molding and core sands from foundries using a variety of metalebinder combinations. Metal concentrations in WFSs were compared to those in virgin silica sands (VSSs), surface soils and soil guidance levels. A total analysis for Ag, Al, Ba, Be, Cd, Co, Cr, Cu, Fe, Mg, Mn, Mo, Ni, Pb, Sb, Te, Tl, V, and Zn was conducted on 96 WFSs and 14 VSSs collected from 17 small and medium-sized foundries. The majority of WFSs analyzed, regardless of metal cast and binder type, contained metal concentrations similar to those found in VSSs and native soils. In several cases where alkyd urethane binder was used, Co and Pb concentrations were elevated in the waste sands. Elevated Cr, Mo, Ni, and Tl concentrations associated with VSSs should not be an issue since these metals are bound within the silica sand matrix. Because of the naturally low metal concentrations found in most WFSs examined in this study, they should not be considered hazardous waste, thus making them available for encapsulated and unencapsulated beneficial use applications.Published by Elsevier Ltd.

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“…In the construction sector, green sands have been used as base material in linear works improving some properties of natural sands (Guney, Aydilek, & Demirkan, 2006). They were also investigated as fine aggregate replacement in asphalt concretes.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the use of cupola furnace slags, green sand and reclaimed asphalt pavement in asphalt concrete mixtures for low intensity traffic

Vega-Zamanillo

Calzada-Pérez

Lastra-González

et al. 2017

rdlc

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This paper presents the performance of different types of asphalt mixtures containing reclaimed asphalt pavement (RAP) and industrial by-products such as cupola furnace slags and green sands. In this study, conventional bitumen is employed as binding material while limestone is used as natural aggregate. The Marshall method has been used for designing the asphalt mixtures and voids percentage while water sensitivity and wheel tracking tests have been carried out to evaluate the mixtures performance. Although the only natural aggregate is limestone, and this significantly hinders the performance of these mixtures, laboratory results show that they can be successfully employed in the construction of low traffic intensity roads as binder course.Key words: RAP, cupola slag, green sand, asphalt concrete, bituminous mixture. ResumenEste artículo recoge el rendimiento de diferentes tipos de hormigón bituminoso fabricados con material fresado y residuos industriales: escoria de horno de cubilote y arenas verdes de moldeo. El árido natural empleado es calizo y el ligante es un betún convencional 50/70. Las dosificaciones se han realizado utilizando el método Marshall, los ensayos mecánicos efectuados sobre las mezclas son los requeridos por la normativa española: porcentaje de huecos, sensibilidad al agua y ensayo de rodadura. Aunque la utilización de caliza como único árido natural penaliza el rendimiento de estas mezclas, los resultados han mostrado que pueden llegar a ser viables para capas intermedias de pavimentos de baja intensidad de tráfico.Palabras clave: Material fresado, escoria de cubilote, arenas verdes de moldeo, hormigón bituminoso, mezcla bituminosa.

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Geoenvironmental behavior of foundry sand amended mixtures for highway subbases

Cited by 95 publications

References 11 publications

Physico-Chemical Characterization of South African Waste Moulding Sands

Physico-Chemical Characterization of South African Waste Moulding Sands

Analysis of total metals in waste molding and core sands from ferrous and non-ferrous foundries

Analysis of the use of cupola furnace slags, green sand and reclaimed asphalt pavement in asphalt concrete mixtures for low intensity traffic

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