頁籤選單縮合
題名 | 轉爐石作為基底層材料試鋪再利用之工程特性研究=Recycling of Engineering Characteristics of Basic Oxygen Furnace Slag and Used as Base Layer Material |
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作者 | 王金鐘; 李德河; | 書刊名 | 中國土木水利工程學刊 |
卷期 | 19:2 2007.06[民96.06] |
頁次 | 頁313-321 |
分類號 | 442.12 |
關鍵詞 | 轉爐石; 濕裹法; 取代濕裹並用法; 回脹率; 加州承載比; Basic oxygen furnace slag; BOF; Wet-binder method; Substitution wet-binder method; Swelling ratio; California bearing ratio; CBR; |
語文 | 中文(Chinese) |
中文摘要 | 轉爐石為煉鋼過程中產生的副產品,因本身具有回脹性,致使其用途受到限制,由研究結果顯示,轉爐石採用濕裹法及取代濕裹並用法均具有抑制回脹效果,其回脹率和CBR值均可滿足道路基底層級配品質要求,其重金屬溶出值也遠低於溶出標準符合環境品質要求。本文將研究結果試鋪於屏東縣萬丹鄉境內臺27線路段,現地試舖共採用六種工法分別為未處理法(純轉爐石)、濕裹及高爐石細料全取代法、濕裹及電廠底灰細料全取代法、水泥底灰濕裹法、水泥飛灰濕裹法、水泥爐石粉濕裹法等,並埋設土層膨脹板、地表觀測樁及地下水監測井,環境背景調查。 現場試舖結果,濕裹法及取代濕裹並用法兩法滾壓次數達10次~14次即可達到100%以上壓實度;兩種方法所測的回脹率介於0.01%~0.06%之間;地下水質方面酸鹼值介於6.8~7.25之間;就重金屬鎘、鉻、銅、鋅、鎳、鉛、汞、砷的濃度,遠低於第二類地下水監測基準及管制標準,因此不會對地下水質造成負面影響,試驗結果供工程界設計與施工參考。 |
英文摘要 | Basic oxygen furnace slag (BOF) is a by-product generated in the process of steel making. Since it is swellable, its usage is limited. The result of research shows that, both the wet-binder method and the substitution wet-binder method can reduce the swell of BOF. The swell rate and CBR value of BOF treated with any of the two methods can satisfy the graded quality requirement of road bases and sub-bases layer, and the heavy metal leaching value is far lower than the leaching standard, complied with the environmental quality requirements. The researcher laid the treated BOF on Tai No. 27 Line in Wangdan Township, Pingtung County. Six engineering methods are adopted, and separately they are: not treated (pure BOF), BF substitutes 100% fine grains of BOF and wet-binder, power plant bottom ash substitutes 100% fine grains of BOF and wet-binder, cement and bottom ash wet-binder, cement and fly ash wet-binder, and cement and slag power wet-binder. Besides, soil layer expansion plat, earth's surface observational station, and groundwater monitors well are used to perform environmental background survey. From the results of trial laying we find that, when wet-binder or substitution wet-winder method is used, a 100% compaction degree can be reached after 10 ~ 14 cycles of rolling; the swell rate is 0.01% ~ 0.06%; the pH value of underground water is 6.8 ~ 7.25; the leaching value of heavy metals like cadmium, chrome, copper, zinc, nickel, lead, hydrargyrum, and arsenic is much lower than the second category underground water monitoring standard and control criterion and, therefore, will not cause negative effect to the quality of underground water. The results of experiment are just provided as reference for engineering design and construction. |
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