Abstract
This study is aimed at the determination of pore solution composition of hardened cement pastes prepared with the addition of chromium-, cadmium- and nickel-salts. Due to the high pH-value of the pore water of cement paste, cadmium and nickel were transformed into insoluble hydroxides and precipitated practically quantitatively. Chromium, added as Na2Cr2O7.2 H2O, which is soluble in a highly alkaline medium, was partly bound. It is not clear yet, whether chromium was adsorbed and/or incorporated in hydration products. The use of clinker instead of cement caused a more intensive bond. Adsorbents (silica fume, fly ash and activated carbon), with the exception of fly ash did not improve this bonding.
| Original language | English |
|---|---|
| Pages (from-to) | 399-404 |
| Number of pages | 6 |
| Journal | Cement and Concrete Research |
| Volume | 22 |
| Issue number | 2-3 |
| DOIs | |
| Publication status | Published - 1992 |
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Effect of adsorbents on the leachability of cement bonded electroplating wastes. / Tamás, F. D.; Csetényi, L.; Tritthart, J.
In: Cement and Concrete Research, Vol. 22, No. 2-3, 1992, p. 399-404.Research output: Contribution to journal › Article
TY - JOUR
T1 - Effect of adsorbents on the leachability of cement bonded electroplating wastes
AU - Tamás, F. D.
AU - Csetényi, L.
AU - Tritthart, J.
PY - 1992
Y1 - 1992
N2 - This study is aimed at the determination of pore solution composition of hardened cement pastes prepared with the addition of chromium-, cadmium- and nickel-salts. Due to the high pH-value of the pore water of cement paste, cadmium and nickel were transformed into insoluble hydroxides and precipitated practically quantitatively. Chromium, added as Na2Cr2O7.2 H2O, which is soluble in a highly alkaline medium, was partly bound. It is not clear yet, whether chromium was adsorbed and/or incorporated in hydration products. The use of clinker instead of cement caused a more intensive bond. Adsorbents (silica fume, fly ash and activated carbon), with the exception of fly ash did not improve this bonding.
AB - This study is aimed at the determination of pore solution composition of hardened cement pastes prepared with the addition of chromium-, cadmium- and nickel-salts. Due to the high pH-value of the pore water of cement paste, cadmium and nickel were transformed into insoluble hydroxides and precipitated practically quantitatively. Chromium, added as Na2Cr2O7.2 H2O, which is soluble in a highly alkaline medium, was partly bound. It is not clear yet, whether chromium was adsorbed and/or incorporated in hydration products. The use of clinker instead of cement caused a more intensive bond. Adsorbents (silica fume, fly ash and activated carbon), with the exception of fly ash did not improve this bonding.
UR - http://www.scopus.com/inward/record.url?scp=0026834804&partnerID=8YFLogxK
U2 - 10.1016/0008-8846(92)90082-7
DO - 10.1016/0008-8846(92)90082-7
M3 - Article
VL - 22
SP - 399
EP - 404
JO - Cement and Concrete Research
JF - Cement and Concrete Research
SN - 0008-8846
IS - 2-3
ER -