Uptake of oxo-anions by cements through solid-solution formation: experimental evidence and modelling
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SummaryUptake experiments were carried out with selenate and chromate on fresh and leached Portland and high-alumina cements; and in addition with selenate and selenite on synthetic ettringite. In all experiments with cements, exceptionally high uptake could be observed under conditions where significant amounts of secondary ettringite were formed. Experimental data obtained for pure ettringite corroborated the important role of this mineral phase. However, uptake kinetics show opposite trends in these two systems, which can be viewed as end-members of the same process: Where a fast precipitation of secondary ettringite occurred, initial uptake was high, with K
2018 ◽
Vol 84
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pp. 1-7
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2003 ◽
Vol 2003
(5)
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pp. 215-221
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1984 ◽
Vol 42
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pp. 408-409
1986 ◽
Vol 47
(C1)
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pp. C1-441-C1-445
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2012 ◽
Vol 9
(1)
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pp. 22-25
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2000 ◽
Vol 11
(20)
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pp. 4061-4070
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