[논문]정수슬러지를 재활용한 인공경량골재의 제조 및 비점오염원 여재의 적용

정성운; 이승호; 남궁현민

doi:10.21186/ipr.2021.6.4.001

[국내논문] 정수슬러지를 재활용한 인공경량골재의 제조 및 비점오염원 여재의 적용
Manufacturing of artificial lightweight aggregate from water treatment sludge and application to Non-point treatment filteration 원문보기

Industry promotion research = 산업진흥연구, v.6 no.4, 2021년, pp.1 - 9

정성운 (투린) , 이승호 (투린) , 남궁현민 (투린)

초록
AI-Helper

본 연구는 정수슬러지의 활용을 위하여 경량골재를 제조하고, 그 물성을 확인하기 위하여 경량골재의 특성과 그 활용가능성을 확인하는 것이다. 경량골재 원료로써 특성을 알아보기 위하여 화학조성 및 열적 특성에 대하여 검토하였다. 급속소성법을 이용하여 골재를 소성하고 물성을 측정하였다. 정수슬러지는 높은 강열감량을 가지고 있었으며, 높은 내화도를 가지고 있었다. 정수슬러지를 30wt% 첨가하였을 때 1,150~1,200℃의 온도에서 경량화되는 것을 확인할 수 있었고, 1200℃이상의 온도에서 밀도 0.8이하의 초경량골재도 제조할 수 있었다. 일반골재를 대체하여 콘크리트에 적용 시 28일 강도가 200~600kgf/cm²를 갖는 공시체를 얻을 수 있었으며, 여과재 시험 시 일반모래와 동등 이상의 성능을 나타냈다.

Abstract ▼ AI-Helper

The purpose of this study is to manufacture lightweight aggregates for recycling water treatment sludge, to identify the physical properties of the aggregates, and present a method of utilizing the manufactured lightweight aggregates. The chemical composition and thermal properties were examined via a raw materials analysis. The aggregate examined here was fired by the rapid sintering method and the single-particle density and water absorption rate were measured. Water treatment sludge has high ignition loss and high fire resistance. When 30wt% of purified sludge was added, the single-particle density of the aggregates was in the range of 0.8~1.2g/cm3 at a temperature of 1,150~1,200℃. At temperatures of 1200℃ or higher, ultra-light aggregates having a single-particle density of 0.8 or less could be produced. When applied to concrete by replacing the general aggregate in the concrete, a specimen having strength values of 200 to 450 kgf/cm2 on 28 days was obtained, and when applied as a filter material, the performance was equal to or higher than that of ordinary sand.

주제어

표/그림 (11)

그림 [Fig. 1] Schematic diagram of filtration device
그림 [Fig. 2] Riley diagram of raw materials
그림 [Fig. 4] TG-DTA measurement result of water treatment sludge
그림 [Fig. 3] XRD measurement result of water treatment sludge
표 Chemical composition of raw materials
표 Drying and ignition loss test results of water treatment sludge
그림 [Fig. 5] Measurement result of (a) particle density and (b) water absorption rate of aggregate
그림 [Fig. 6] Cross-section of sintered aggregate
표 Heavy metal leaching test result of the water treatment sludge aggregates (ppm)
그림 [Fig. 7] SEM microstructure observation result of water treatment sludge lightweight aggregate
표 Filtration performance test result

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표제어: PCR

동의어: Packet Collision Rate

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