Abstract
In this paper, the influence of the external factors on the amount of hexavalent chromium Cr(VI) released from the concrete waste and the adsorption/reduction action caused by the surround soil, was investigated. The following results were obtained. 1. Serial batch test using mildly nitric acid solution is expected to be able to assess available amount for leaching under the general environment. 2. In case of the carbonation sample, the dissolution continued under the soaking condition, after the 91 days. 3. Blast-furnace slag fine aggregate and the powder reduced Cr(VI).4. Volcanic cohesive soil and organic soil have the capacity of absorption/reduction.
| Original language | English |
|---|---|
| Pages (from-to) | 1803-1808 |
| Number of pages | 6 |
| Journal | Journal of Structural and Construction Engineering |
| Volume | 75 |
| Issue number | 656 |
| DOIs | |
| Publication status | Published - 2010 Oct |
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Keywords
- Carbonation
- Concrete waste
- Hexavalent chromium
- Hydrogen-ion concentration
- Leaching test
- Reduction
ASJC Scopus subject areas
- Building and Construction
- Architecture
Cite this
Influence of external factors on leaching of hexavalent chro1vewm from concrete waste. / Kuroda, Yasuhiro; Koshiishi, Naoyuki.
In: Journal of Structural and Construction Engineering, Vol. 75, No. 656, 10.2010, p. 1803-1808.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Influence of external factors on leaching of hexavalent chro1vewm from concrete waste
AU - Kuroda, Yasuhiro
AU - Koshiishi, Naoyuki
PY - 2010/10
Y1 - 2010/10
N2 - In this paper, the influence of the external factors on the amount of hexavalent chromium Cr(VI) released from the concrete waste and the adsorption/reduction action caused by the surround soil, was investigated. The following results were obtained. 1. Serial batch test using mildly nitric acid solution is expected to be able to assess available amount for leaching under the general environment. 2. In case of the carbonation sample, the dissolution continued under the soaking condition, after the 91 days. 3. Blast-furnace slag fine aggregate and the powder reduced Cr(VI).4. Volcanic cohesive soil and organic soil have the capacity of absorption/reduction.
AB - In this paper, the influence of the external factors on the amount of hexavalent chromium Cr(VI) released from the concrete waste and the adsorption/reduction action caused by the surround soil, was investigated. The following results were obtained. 1. Serial batch test using mildly nitric acid solution is expected to be able to assess available amount for leaching under the general environment. 2. In case of the carbonation sample, the dissolution continued under the soaking condition, after the 91 days. 3. Blast-furnace slag fine aggregate and the powder reduced Cr(VI).4. Volcanic cohesive soil and organic soil have the capacity of absorption/reduction.
KW - Carbonation
KW - Concrete waste
KW - Hexavalent chromium
KW - Hydrogen-ion concentration
KW - Leaching test
KW - Reduction
UR - http://www.scopus.com/inward/record.url?scp=81055147530&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=81055147530&partnerID=8YFLogxK
U2 - 10.3130/aijs.75.1803
DO - 10.3130/aijs.75.1803
M3 - Article
AN - SCOPUS:81055147530
VL - 75
SP - 1803
EP - 1808
JO - Journal of Structural and Construction Engineering
JF - Journal of Structural and Construction Engineering
SN - 1340-4202
IS - 656
ER -