저회 및 준설토를 이용한 에코인공경량골재의 제조에 관한 연구
A study on the ecological lightweight aggregates made of bottom ashes and dredged soils
1
조회
0
다운로드
3
인용
0
참고문헌
초록
화력발전소에서 발생하는 저회와 준설공사 시 발생하는 준설토를 효과적으로 자원화하기 위하여 인공경량골재 를 만들어 경량콘크리트에 적용 가능한지 물리·화학적 분석을 진행하였다. 서울에서 20 km 서쪽에 위치해 있는 영흥도에 서 발생된 저회와 준설토를 이용하여 인공경량골재를 제조하였으며, 모든 원료는 혼합 전 분쇄하여 사용되었다. 제조된 골 재는 KS에 의거하여 입도시험, 표건밀도와 흡수율 시험, 안정성, 알칼리 잠재반응, 중금속 용출 시험을 진행하였다. 입도분 석에서 굵은 골재는 적정 조립율 값을 나타내었고, 잔골재는 조립율의 범위를 벗어났다. 경량화 될수록 흡수율이 증가하는 사실을 알 수 있었다. 안정성 및 중금속 용출 시험 결과 무해한 것으로 판단되었으나, 알칼리 잠재 반응성 확인 결과 몇몇 조성을 제외하고 무해한 골재로 판정되었다.
Abstract
Ecological lightweight aggregates were made in order to recycle the dredged soils from the seaside constructionarea and the bottom ashes from the power plant. Various physical and chemical analysis were performed on them toidentify their posibility for applying lightweight concrete fields. Lightweight agregates were made of bottom ashes andbefore mixing. The physical and chemical properties such as density, absorption rate, stability, alkali latency reaction, heavymetal leaching of the lightweight aggregates were tested and analysed by folowing the KS standard procedures. From thesize analysis, the coarse agregates showed a suitable fit on standard particle ranges; however, the fine aggregates showeda large deviation from the standard. The absorption rates were increased with decreasing weight of the agregates. All theaggregates were turned out to be safe by the stability and heavy metal leaching test; however, some of the aggregates wereconfirmed on the border of harmles and posibly harmful region through the alkali latency reactivity test.Key words Ecological lightweight agregates, Bottom ashes, Dredged soils, Lightweight concrete
참고문헌 (12)
- "Information personally obtained from Korea Namdong Electrics in 2006" (2006)
- "KS F 2545 Alkali Potential Reaction Test Method for Aggregates"
- "A Study on the physical properties of cement mortar with use of bottom ash dumped at an ash pond of the electrical coal power station", 69 (2004)
- "KS F 2523 Terms and Definition of Aggregates"
- "An experimental study on propertiws of mortar using bottom ash produced in power plant", 23, pp.203~ (2003)
- "A study on the strength properties of concrete containing bottom ash as a part of fine aggregate", 21, pp.359~ (2001)
- "Co-relation of leaching properties of heavy metals on nano particle with colloid", interface variables, 2006, 35~39
- "Recycling strategies and case histories of dredged soils", 3, pp.48~ (2002)
- KS F 2502 Sieving Test Method for Fine and Coarse Aggregates, , ~
- KS F 2503 Absorption Rate and Density Test Method for Fine Aggregates, , ~
- KS F 2504 Absorption Rate and Density Test Method for Fine Aggregates, , ~
- KS F 2507 Stability Test Method for Aggregates, , ~