인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
This study investigated the concentration of particulate matter (PMs) generated during the crushing process of waste concrete sleepers at railway sites. Using a light scattering-based device, concentrations of particulate matter (PM<sub>10</sub>, PM₄, PM<sub>2.5</sub>, and PM₁) were measured within a 2.5-meter radius of the crushing site during the concrete sleeper crushing. The results revealed that the crushing process led to average increases in PM10 and PM2.5 concentrations by 23,881 ㎍/㎥ and 3,880 ㎍/㎥, respectively, with maximum levels reaching 77,630 ㎍/㎥ and 14,862 ㎍/㎥. Furthermore, particle size distribution analysis indicated that approximately 50% of the particulate matter ranged between 4-11 ㎛, capable of penetrating the respiratory tract, while approximately 37% were smaller than 4 ㎛, posing a risk of deep lung infiltration. To reduce the particulate matter generation when crushing waste concrete sleepers, cyclone and water spray technologies were applied both individually and in combination during the crushing process. The combined application of both technologies achieved significant reductions of 70% in PM<sub>10</sub> and 65% in PM<sub>2.5</sub> concentrations compared to the case without mitigation measures.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
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UCI(KEPA) : I410-151-25-02-092479358