Strength, durability, and micro-structural properties of concrete made with used-foundry sand (UFS)

Siddique, Rafat; Aggarwal, Yogesh; Aggarwal, Paratibha; Kadri, El-Hadj; Bennacer, Rachid

doi:10.1016/j.conbuildmat.2010.11.065

Cited by 132 publications

(65 citation statements)

References 11 publications

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“…UFSa and UFSb appear finer and more uniform sized than natural sand (Fig. 3) and this fact decreases the workability of fresh mortars and concretes, especially at the highest replacement rate, confirming results already reported in the literature [1,20,22]. …”

Section: Production Of Mixturessupporting

confidence: 91%

“…Indeed UFS has been extensively investigated both as a constituent material for controlled low-strength materials [13], for mortar and concrete [14][15][16][17][18][19][20][21][22][23] and self compacting concrete [24][25][26]. However, currently, the percentage of these materials used in cementitious materials is not at the desired sustainable level.…”

Section: Introductionmentioning

confidence: 99%

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Effect of two different sources and washing treatment on the properties of UFS by-products for mortar and concrete production

Monosi

Tittarelli

Giosuè

et al. 2013

Construction and Building Materials

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Section: Production Of Mixturessupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Effect of two different sources and washing treatment on the properties of UFS by-products for mortar and concrete production

Monosi

Tittarelli

Giosuè

et al. 2013

Construction and Building Materials

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“…The usual fate of this sand -several MT per year -is to be landfilled after a previous process of solidification/stabilization. Owing to high landfilling costs and environmental concerns, some researchers have reported other management alternatives for these polluted WFS, such as subbases, soils, ceramics, controlled-low-strength materials and concretes [4][5][6][7][8]. In these last two cases, WFS can be used to partially replace normal sand.…”

Section: Introductionmentioning

confidence: 99%

A novel use of calcium aluminate cements for recycling waste foundry sand (WFS)

Navarro-Blasco

Fernández

Durán

et al. 2013

Construction and Building Materials

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The recycling of WFS in calcium aluminate cement mortars at high level of replacement (50%) was studied. Consistency and setting time were measured in fresh mortars. Two different curing conditions were used, the second one with the aim of enhancing the formation of stable cubic calcium aluminate hydrates. Compressive strength, pore size distribution and SEM examination were carried out to assess the effectiveness of CAC matrix in the recycling of WFS. The effect of the incorporation of a polymeric admixture -a chitosan derivative -was also explored. Leaching studies on hardened mortars of three target pollutants of the WFS (toxic metals Pb, Cr and Zn) were also done to evaluate their immobilization. By comparison with OPC mortars, the use of CAC showed several advantages, improving the compressive strength and the toxic metal retention.

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“…The monitoring and control of tailings to avoid possible contamination are essential for the reuse of sand. The worst contaminants are associated with organic binders that are not degraded during leakage and can be a source of hazardous compounds [16]. For this reason, possible applications of used foundry sand focus on green sand tailings, in which binders are inorganic and do not constitute a health hazard.…”

Section: Introductionmentioning

confidence: 99%

“…It is estimated that 3 million tons of UFS are produced each year in Brazil [15]. The volume generated and the environmental impact of disposal justifies studies aimed at the employment of this sand as a raw material for the production of construction and paving materials [16,17]. The monitoring and control of tailings to avoid possible contamination are essential for the reuse of sand.…”

Section: Introductionmentioning

confidence: 99%

Characterization of soil-cement bricks with incorporation of used foundry sand

et al. 2017

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In order to contribute to the sustainability of the foundry and construction industrial sectors, this work investigated the possibility of employing used foundry sand (UFS) in soil-cement bricks. Modular bricks were prepared with percentages of 10 wt% cement, 0-25 wt% commercial sand, 0-65 wt% used foundry sand, 25-65 wt% clay, and 15-30 wt% gravel dust. A content of 10 wt% Portland cement was adopted to ensure economic feasibility, and gravel was used to improve mechanical strength. The modular bricks were tested to determine their technical properties. The interfaces between the constituent materials were observed by scanning electron microscopy. In durability tests, the bricks showed water absorption and weight loss in accordance with current technical standards. The addition of UFS together with gravel dust reduced water absorption and provided an acceptable level of mechanical resistance, in accordance with established soil-cement standards. Keywords: soil-cement brick, used foundry sand, building ceramics, solid industrial waste. Resumo A fim de contribuir para a sustentabilidade de indústrias de fundição e de construção, este artigo estudou a possibilidade de areia descartada de fundição (ADF) ser incorporada em tijolos de solo-cimento. Tijolos modulares foram preparados com

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Strength, durability, and micro-structural properties of concrete made with used-foundry sand (UFS)

Cited by 132 publications

References 11 publications

Effect of two different sources and washing treatment on the properties of UFS by-products for mortar and concrete production

Effect of two different sources and washing treatment on the properties of UFS by-products for mortar and concrete production

A novel use of calcium aluminate cements for recycling waste foundry sand (WFS)

Characterization of soil-cement bricks with incorporation of used foundry sand

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