@article{ART001815989},
author={신택수 and Hong Sangpyo and KIM KWANG YUL},
title={Assessment of Leaching Characteristics of Alkaline and Heavy Metal Ions from Recycled Concrete Aggregate},
journal={Journal of Environmental Impact Assessment},
issn={1225-7184},
year={2013},
volume={22},
number={5},
pages={427-437},
doi={10.14249/eia.2013.22.5.427}
TY - JOUR
AU - 신택수
AU - Hong Sangpyo
AU - KIM KWANG YUL
TI - Assessment of Leaching Characteristics of Alkaline and Heavy Metal Ions from Recycled Concrete Aggregate
JO - Journal of Environmental Impact Assessment
PY - 2013
VL - 22
IS - 5
PB - Korean Society Of Environmental Impact Assessment
SP - 427
EP - 437
SN - 1225-7184
AB - Generation rate of construction wastes in Korea has occupied preponderantly in recent years. Although Korean government has made efforts to increase recycling rate, classification based on chemical properties of construction wastes has not been well defined. The objective of this study is to understand chemical properties of recycled concrete aggregate (RCA). RCA was tested for its leaching characteristics. Leaching tests were conducted the following procedures in Korean standard leaching test (KLT) and toxicity characteristics leaching procedure (TCLP), respectively. The RCA samples were characterized using X-ray fluorescence (XRF). Alkalinity of the leachate was determined using a pH meter titration method. The XRF analysis result shows that the calcium oxide (CaO) content in the RCA sample is 25.3～50.4 %. When the RCA sample was mixed with water in a batch reactor, pH in the solution was rapidly increased, and 70% of the total pH change was found in 1 hour. The TCLP showed slightly higher efficiency for leaching heavy metals than the KLT. The leaching efficiency was also higher as the particle size of RCA sample was smaller. The leaching test results suggest that RCA can be generally classified as non-hazardous waste.
KW - Recycled concrete aggregate;Leaching characteristics;Alkaline ions;Heavy metal ions
DO - 10.14249/eia.2013.22.5.427
ER -
신택수, Hong Sangpyo and KIM KWANG YUL. (2013). Assessment of Leaching Characteristics of Alkaline and Heavy Metal Ions from Recycled Concrete Aggregate. Journal of Environmental Impact Assessment, 22(5), 427-437.
신택수, Hong Sangpyo and KIM KWANG YUL. 2013, "Assessment of Leaching Characteristics of Alkaline and Heavy Metal Ions from Recycled Concrete Aggregate", Journal of Environmental Impact Assessment, vol.22, no.5 pp.427-437. Available from: doi:10.14249/eia.2013.22.5.427
신택수, Hong Sangpyo, KIM KWANG YUL "Assessment of Leaching Characteristics of Alkaline and Heavy Metal Ions from Recycled Concrete Aggregate" Journal of Environmental Impact Assessment 22.5 pp.427-437 (2013) : 427.
신택수, Hong Sangpyo, KIM KWANG YUL. Assessment of Leaching Characteristics of Alkaline and Heavy Metal Ions from Recycled Concrete Aggregate. 2013; 22(5), 427-437. Available from: doi:10.14249/eia.2013.22.5.427
신택수, Hong Sangpyo and KIM KWANG YUL. "Assessment of Leaching Characteristics of Alkaline and Heavy Metal Ions from Recycled Concrete Aggregate" Journal of Environmental Impact Assessment 22, no.5 (2013) : 427-437.doi: 10.14249/eia.2013.22.5.427
신택수; Hong Sangpyo; KIM KWANG YUL. Assessment of Leaching Characteristics of Alkaline and Heavy Metal Ions from Recycled Concrete Aggregate. Journal of Environmental Impact Assessment, 22(5), 427-437. doi: 10.14249/eia.2013.22.5.427
신택수; Hong Sangpyo; KIM KWANG YUL. Assessment of Leaching Characteristics of Alkaline and Heavy Metal Ions from Recycled Concrete Aggregate. Journal of Environmental Impact Assessment. 2013; 22(5) 427-437. doi: 10.14249/eia.2013.22.5.427
신택수, Hong Sangpyo, KIM KWANG YUL. Assessment of Leaching Characteristics of Alkaline and Heavy Metal Ions from Recycled Concrete Aggregate. 2013; 22(5), 427-437. Available from: doi:10.14249/eia.2013.22.5.427
신택수, Hong Sangpyo and KIM KWANG YUL. "Assessment of Leaching Characteristics of Alkaline and Heavy Metal Ions from Recycled Concrete Aggregate" Journal of Environmental Impact Assessment 22, no.5 (2013) : 427-437.doi: 10.14249/eia.2013.22.5.427
