Using of the recycled aggregates is strongly promoted to use the national resources efficiently and enhance the recycling rate of construction wastes. However, the negative impact is expected by the alkalinity elution characteristic to the water quality and soil ecology in the region where could be contacted by water like ground water, river, area nearby coast, and etc. For this reason, we developed the pH test method to use the recycled aggregate in the drainage layer and analyse the pH concentration of the sort of time change and particle size. By the ‘Korean Standard Method for Waste’, the pH concentration was ranged from 10.78 to 11.72, by the ‘Korean Standard Method for Soil’, the pH concentration was ranged from 10.73 to 11.97, by the developed pH test in this study, the pH concentration was ranged from 10.82 to 11.71. There was no difference in the pH concentration in relation to the stirring time and the spread of particle size.

I. 서 론
 II. 연구방법
  1. 시료채취
  2. 분석기기
  3. 전처리 방법
  4. 실험방법
 III. 결과 및 고찰
  1. 원시료의 시간에 따른 pH 변화
  2. 폐기물공정시험기준에 의한 분석결과
  3. 토양오염공정시험기준에 의한 분석결과
  4. 배수층용도 순환골재의 pH 시험방법(안) 제시 및 분석결과
 IV. 결 론
 References

• 강영렬(국립환경과학원 자원순환연구과) | Young-Yeul Kang
• 최민영(국립환경과학원 자원순환연구과) | Min-Young Choi
• 전태완(국립환경과학원 자원순환연구과) | Tae-Wan Jeon Corresponding author
• 정용우(국립환경과학원 자원순환연구과) | Yong-Woo Jeong
• 정성경(국립환경과학원 자원순환연구과) | Seong-Kyeong Jeon
• 신선경(국립환경과학원 자원순환연구과) | Sun-Kyoung Shin