Geo-chemische modellering uitlooggedrag vliegas Vondelingenweg en AVI-bodemas Coloradoweg, Rotterdam
Citations
Altmetric:
Series / Report no.
Open Access
Type
Report
Language
nl
Date
1995-07-31
Research Projects
Organizational Units
Journal Issue
Title
Geo-chemische modellering uitlooggedrag vliegas
Vondelingenweg en AVI-bodemas Coloradoweg, Rotterdam
Translated Title
Geo-chemical modelling of leaching behaviour of
fly ash at Vondelingenweg and MSWI-bottom ash at Coloradoweg,
Rotterdam
Published in
Abstract
In het kader van het C.R.O.W-project "Relatie
uitlooggedrag laboratorium-praktijk bij wegenbouwkundige projecten" is
onderzoek verricht naar de uitlooggeschiedenis van secundaire bouwstoffen
toegepast in wegfunderingen op een 2-tal praktijklocaties; Vondelingenweg
en Coloradoweg (Rotterdam, Nederland). Met behulp van het geo-chemisch
model ECOSAT zijn snelheid en mechanisme van uitloging uit de bouwstof
onderzocht alsmede de mate van vastlegging van uitgeloogde componenten in de
onderliggende bodem. Uit de modellering bleek dat de gemeten
concentratieprofielen in de bouwstof en de onderliggende zandlaag op de
locatie Vondelingenweg (asfaltafdekking) typerend zijn voor diffusie
gecontroleerde uitloging en op de locatie Coloradoweg (klinkerafdekking)
voor percolatie gecontroleerde uitloging. De gemeten concentratieprofielen
in de zandlaag onder de bouwstof van locatie Coloradoweg (asfaltbedekking)
representeren grotendeels de totale cumulatieve emissie sinds aanleg van de
weg (ca. 10 jaar). Imissies van Zn, Cd en Pb op de locatie Vondelingenweg
binden vermoedelijk in de bovenste decimeters van de zandlaag waardoor
transport naar diepere lagen beperkt blijft.
As part of the C.R.O.W-project "Leaching behaviour of secondary building materials in road constructions, under laboratory and field conditions" we investigated leaching history of chemical components from two road construction sites. The sites were situated at Coloradoweg and Vondelingenweg, Rotterdam, the Netherlands. The geo-chemical model ECOSAT was used to investigate rate and mechanism of leaching from the secondary building materials as well as binding of chemical components in the soil layer beneath. At location Coloradoweg (asphalt cover) leaching from the road construction was controlled by diffusion processes. Concentration profiles in the soil layer underneath the secondary building material were a good measure of the cumulative leaching from the road construction during the past 10 years. At location Vondelingenweg leaching was dominated by convection processes. Although substantial leaching of heavy metals from the road construction occurred, transport through the underlying soil layer was limited due to soil-metal binding processes.
As part of the C.R.O.W-project "Leaching behaviour of secondary building materials in road constructions, under laboratory and field conditions" we investigated leaching history of chemical components from two road construction sites. The sites were situated at Coloradoweg and Vondelingenweg, Rotterdam, the Netherlands. The geo-chemical model ECOSAT was used to investigate rate and mechanism of leaching from the secondary building materials as well as binding of chemical components in the soil layer beneath. At location Coloradoweg (asphalt cover) leaching from the road construction was controlled by diffusion processes. Concentration profiles in the soil layer underneath the secondary building material were a good measure of the cumulative leaching from the road construction during the past 10 years. At location Vondelingenweg leaching was dominated by convection processes. Although substantial leaching of heavy metals from the road construction occurred, transport through the underlying soil layer was limited due to soil-metal binding processes.
Description
Publisher
Sponsors
DGM/BO