Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Trace and major elements’ stabilisation in soils treated with hydraulic binders
Our ongoing research work is aimed at assessing the influence of a treatment of soils with hydraulic binders on the stabilisation of trace elements. For three soils treated according to two standard formulations, the stabilisation of trace (As, Cd, Cr, Cu, Ni, Pb and Zn) and major elements (Al, Ca, Fe, S and Si) is not systematically effective. After 28 days of treatment, an increase of Cu concentrations on the water soluble fraction in soils 1 and 2 is observed. The concentrations in Al, Ca, S, Si also increase: the elements are mobilised in the interstitial solution of soils to form hydrates. After 180 days, the concentrations of Cr, Cu and Ni on the fraction dissolved in water is greater than at 28 days for some mixtures of soils and binders. The concentrations in Si decrease. It could prove a calcium silicate hydrates formation.
Trace and major elements’ stabilisation in soils treated with hydraulic binders
Our ongoing research work is aimed at assessing the influence of a treatment of soils with hydraulic binders on the stabilisation of trace elements. For three soils treated according to two standard formulations, the stabilisation of trace (As, Cd, Cr, Cu, Ni, Pb and Zn) and major elements (Al, Ca, Fe, S and Si) is not systematically effective. After 28 days of treatment, an increase of Cu concentrations on the water soluble fraction in soils 1 and 2 is observed. The concentrations in Al, Ca, S, Si also increase: the elements are mobilised in the interstitial solution of soils to form hydrates. After 180 days, the concentrations of Cr, Cu and Ni on the fraction dissolved in water is greater than at 28 days for some mixtures of soils and binders. The concentrations in Si decrease. It could prove a calcium silicate hydrates formation.
Trace and major elements’ stabilisation in soils treated with hydraulic binders
Saussaye, Lucile (Autor:in) / Leleyter, Lydia (Autor:in) / Baraud, Fabienne (Autor:in) / Boutouil, Mohamed (Autor:in)
European Journal of Environmental and Civil Engineering ; 22 ; 755-769
03.06.2018
15 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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