Leaching behaviour of synthetic aggregates

Sloot, H.A. van der; Hoede, D.; Cresswell, D.J.F.; Barton, J R

doi:10.1016/s0956-053x(00)00093-3

Cited by 35 publications

(21 citation statements)

References 3 publications

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“…Early studies demonstrated that sintering of different waste materials allows for the immobilization of hazardous metals and destroys the organic pollutants [20][21][22][26][27][28][29], with the simultaneous advantage of achieving a significant reduction in the volume of waste which is around 80-90%.…”

Section: Introductionmentioning

confidence: 99%

Possible production of ceramic tiles from marine dredging spoils alone and mixed with other waste materials

Baruzzo

Minichelli

Brückner

et al. 2006

Journal of Hazardous Materials

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Section: Introductionmentioning

confidence: 99%

Possible production of ceramic tiles from marine dredging spoils alone and mixed with other waste materials

Baruzzo

Minichelli

Brückner

et al. 2006

Journal of Hazardous Materials

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“…The stabilization thanks to an hydraulic binder such as cement matrix is very beneficial to this kind of materials [19].…”

Section: Resultsmentioning

confidence: 99%

“…It is recommended by many studies [19][20][21][22] to cover large pH differences in the environment, to get the buffer capacity, in order to have a sight of the product sensitivity in external conditions.…”

Section: Environmental Characterizationmentioning

confidence: 99%

Use of Treated Dredged Sediments as Road Base Materials: Environmental Assessment

Tribout

Husson

Nzihou

2011

Waste Biomass Valor

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The treatment and the valorization of polluted dredged sediments is an important issue. The main benefit is the saving of natural resources and the prevention of landfilling. The valorization of sediments into road base materials require an accurate assessment of their characteristics. This study addresses the mechanical and leaching tests. The Novosol Ò process has been used to treat the dredged sediment and consists in the stabilization of heavy metals using phosphate and the degradation of organics by calcination at 700°C. The characterization (chemical, physical, thermal and environmental) carried out on the treated sediment shows that it is mainly composed with fine particles. The analyses have shown a low bulk density in comparison to that for standard sand. A significant total metal content and the absence of organic matter have been concluded. To evaluate the mechanical behaviour of the road materials, tensile strength and elasticity modulus have been measured. It has been seen that the introduction of treated sediments in materials treated with hydraulic binders improves the tensile strength. An environmental assessment has been made on these hydraulic-binder-treated materials thanks to a percolation test and the EN 12457-2 leaching test. The percolation test allows to evaluate the behaviour under accelerated conditions. The standard leaching test is used in order to assess pollution potential. Both tests show that the release of metallic elements is almost the same for mixtures with or without sediments. The results suggest that the use of treated sediments in road materials is not harmful and brings mechanical benefits.

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“…Light-weight aggregates (LWA) were produced in a benchscale rotary kiln at the School of Civil Engineering at University of Leeds (Wainwright et al, 2001;Van der Sloot et al, 2001). Three batches with different clay/sludge mixtures were prepared: LWA-1: 50/50%, LWA-2: 70/30% and LWA-3: 90/10%.…”

Section: Sample Preparationmentioning

confidence: 99%