An investigation of waste foundry sand in asphalt concrete mixtures

Bakış, Recep; Koyuncu, Hakan; Demırbas, Ayhan

doi:10.1177/0734242x06064822

Cited by 85 publications

(43 citation statements)

References 4 publications

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“…Abrasion resistance of the paving stone specimens was found to be very high. Bakis et al [8] prepared asphalt concrete in which 0-20% of the sand was replaced with SFS. In their study, the indirect tensile strength decreased almost linearly with an increase in SFS amount.…”

Section: Introductionmentioning

confidence: 99%

Use of spent foundry sand and fly ash for the development of green self-consolidating concrete

et al. 2010

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In the United States alone, the foundry industry discards up to 10 million tons of sand each year, offering up a plentiful potential resource to replace sand in concrete products. However, because the use of spent foundry sand (SFS) is currently very limited in the concrete industry, this study investigates whether SFS can successfully be used as a sand replacement material in cost-effective, green, selfconsolidating concrete (SCC). In the study, SCC mixtures were developed to be even more inexpensive and environmentally friendly by incorporating Portland cement with fly ash (FA). Tests done on SCC mixtures to determine fresh properties (slump flow diameter, slump flow time, V-funnel flow time, yield stress, and relative viscosity), compressive strength, drying shrinkage and transport properties (rapid chloride permeability and volume of permeable pores) show that replacing up to 100% of sand with SFS and up to 70% Portland cement with FA enables the manufacture of green, lower cost SCC mixtures with proper fresh, mechanical and durability properties. The beneficial effects of FA compensate for some possible detrimental effects of SFS.

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Section: Introductionmentioning

confidence: 99%

Use of spent foundry sand and fly ash for the development of green self-consolidating concrete

et al. 2010

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“…Recently, a numbers of applied researches [6][7][8][9], including the patent [10], addressed to investigate the feasibility to re-employ UFSs in other industrial sectors than ferrous. The most suitable one seems the construction industry, because of UFS employ in several construction materials, like: Portland cement clinker, structural concrete, brickworks, building conglomerates, road base, structural fill, flow-able fill, soil amendment, or as the fine aggregate portion of concrete or hot-mix asphalt [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Used Foundry Sand in Cement Mortars and Concrete Production~!2010-03-27~!2010-05-03~!2010-07-07~!

Monosi¹,

Sani²,

Tittarelli³

2010

TOWMJ

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Used foundry sands represent the highest amount of solid wastes generated by foundries. Classified by European Union regulations as non hazardous waste, they represent a relevant source to be reused in several industrial sectors, in building construction primarily.In present paper, the properties of mortars and concretes containing different dosages of used foundry sand (UFS) as partial replacement of sand were investigated in both fresh and hardened conditions. In particular, higher percentages of addition, but lower if referred to the whole aggregate (fine and coarse), were considered in concretes than in mortars. Both mortars and concretes were evaluated with respect to consistency of the fresh mixture and compressive strength of the hardened material. Elastic modulus determination of the hardened material was carried out on concretes.A low (10%) amount of used foundry sand does not change the mortar's performances. In the presence of higher additions a workability decreasing can be outlined, and then a higher dosage of superplasticizer is required in order to keep it constant. Mechanical performances lower of about 20-30% than those of the conglomerate without used foundry sand are observed. The higher penalization it seems to concern to the conglomerates of better quality (i.e. lower water-cement ratio).

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“…Also, Fiore & Zanetti [11] have investigated the use of foundry sand waste in the production of recycled concrete. In other researches, e.g., Klinsky [3], Bakis et al [12] e Javed et al [13], the use of foundry sand waste in the production of asphalt concrete has been investigated. Based on the aforementioned, it is noteworthy that in addition to eliminating the need for disposal in landfills, the use of waste foundry sand in Influence of foundry sand residues on the fresh and hardened properties of mortars produced with portland cement reducing admixture (polyfunctional), density of 1.08 kg/dm³.…”

Section: Introductionmentioning

confidence: 99%

Influência do emprego de areia de fundição residual nas propriedades no estado fresco e endurecido de misturas cimentícias

Silva

Tochetto²,

Prudêncio

et al. 2011

Rev. IBRACON Estrut. Mater.

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The foundry sand waste (FSW) derives from moulds used in the metallurgical industries. The present experimental study was developed to evaluate the influence of the use of FSW on concrete properties. The mixtures were produced with cement CPV-ARI-RS, water reducing admixture, FSW, natural and crushed aggregates. The properties on the fresh state were evaluated by means of flow table test and the determination of the incorporated air content. On the hardened state, compressive strength tests were performed. The initial results have shown that the use of FSW leads to an increase in the air content and cracking, caused by expansive reactions. As a result of that, a reduction in the compressive strength has been noticed. In order to define the origin of the presented trends, a complementary study was developed using FSW with different compositions. However, regardless the composition of the FSW, the obtained results presented trends which were similar to the ones previously observed. Finally, considering the materials herein used, the addition of FSW in concrete is considered inadequate since this leads to a decrease not only in the compressive strength, but also in the durability of the material.Keywords: residues, foundry sand waste, expansive reactions A areia de fundição residual (AFR) consiste em um resíduo arenoso proveniente dos moldes utilizados no processo de fundição de metais. O presente trabalho foi desenvolvido com o objetivo de avaliar a influência do uso da AFR nas propriedades concreto. Para tanto, utilizou-se cimento CPV-ARI RS, aditivo plastificante, AFR e areias fina, média natural e de britagem. As propriedades no estado fresco foram avaliadas através da determinação da consistência e teor de ar incorporado. No estado endurecido avaliou-se a resistência à compressão axial. Os resultados indicaram que o uso da AFR resulta no aumento do teor de ar incorporado, fissuração por reações expansivas e conseqüente redução de resistência. Visando investigar a origem das tendências observadas, realizou-se um estudo complementar empregando AFR de diferentes composições. Todavia, independente da composição utilizada, os resultados indicaram tendência semelhante à observada anteriormente. Por fim, considerando os materiais empregados nesta pesquisa, conclui-se que a utilização da AFR em concreto é inadequada, pois prejudica não apenas a resistência mecânica, mas também a durabilidade do material. MSc. Civil Engineer, Faculty of Civil Engineering, wilsonecv@gmail.com, Thakurova 7, 166 29 Prague 6 Czech Republic. b Civil Engineer, eduardo_tochetto@hotmail.com, Av. Anita Garibaldi 888, Professor, Departamento de Engenharia Civil, prudenciouk@hotmail.com, Campus Universitário, Bloco B, r.114, Departamento Acadêmico de Construção Civil, alexandre@ifsc.edu.br, Rua Mauro Ramos 950,

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An investigation of waste foundry sand in asphalt concrete mixtures

Cited by 85 publications

References 4 publications

Use of spent foundry sand and fly ash for the development of green self-consolidating concrete

Use of spent foundry sand and fly ash for the development of green self-consolidating concrete

Used Foundry Sand in Cement Mortars and Concrete Production~!2010-03-27~!2010-05-03~!2010-07-07~!

Influência do emprego de areia de fundição residual nas propriedades no estado fresco e endurecido de misturas cimentícias

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