碩博士論文 90326007 詳細資訊


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姓名 林月婷(Yueh-Ting LIN)
查詢紙本館藏  
電子郵件信箱 s0326007@cc.ncu.edu.tw
畢業系所 環境工程研究所(Graduate Institute of Environmental Engineering)
畢業學位 碩士(Master) 畢業時期 092學年第2學期
論文名稱(中) 下水污泥焚化灰燒製輕質骨材與應用於混凝土材料之性質研究
論文名稱(英) Feasibility Study on Recycling Incinerated Sewage Sludge Ash as Lightweight Aggregate and Its Application for lightweight Concrete
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摘要(中) 在下水道建設的推動下,台灣地區下水道接管普及率逐年提昇,但廢棄下水污泥亦隨之而來,根據文獻指出下水污泥焚化灰具有燒成輕質骨材的潛力,因此為有效將廢棄污泥轉換為具實用性的物質,本研究以下水污泥焚化底渣為主體材料,與下水污泥乾燥粉末混合成不同比例進行造粒及輕質骨材燒製實驗,探討高溫操作條件對燒成骨材特性之影響,並應用於混凝土及藉由添加鋁粉發泡劑來提昇混凝土之輕質化特性,同時探討混凝土材料特性。
實驗結果顯示,利用不同污泥灰/乾燥污泥粉末之配比100:0、90:10、80:20及70:30,欲燒製密度規格小於1.6 g/cm3之輕質骨材,適當燒製條件(燒製溫度及時間)分別為1150℃/10min、1150℃/10min,1100℃/10min及1050℃/10min。由此顯示適當比率的乾燥污泥有助於降低輕質骨材的燒製溫度,同時達省能效益。
就污泥焚化灰輕質骨材混凝土材料而言,100%污泥焚化灰燒製而成之AH1輕質骨材,相較於混合20%乾燥污泥粉末燒製而成之CM1輕質骨材,AH1輕質骨材有較大的密度、破壞點荷重及SiO2的結晶程度,因此在相同條件下,LC-I(AH1)輕質混凝土之容積密度、抗壓強度發展及熱傳導率均比LC-II(CM1)輕質混凝土高。LC-I (AH1)及LC-II (CM1)輕質骨材混凝土之密度與抗壓強度分別符合ACI 213 R-87輕質混凝土之結構及中強度混凝土用途規範要求;添加0.2~0.4%鋁粉時,LC-I (AH1)符合中強度混凝土用途規範,但其強度接近下限值,而LC-II (CM1)介於中強度混凝土與非結構絕緣體用途規範之間。
摘要(英) A substantial amount of sewage sludge, estimated 50,000 annual tons (on a dry base) by the year 2010, is expected to be generated with the increasing population served by the sewer system under development, this requiring further proper treatment and/or disposal. This study investigated the feasibility of recycling sewage sludge into lightweight aggregates by sintering the mixtures prepared using the incinerated sludge ash(ISA), with an addition of dry sludge powder(DSP) as a bloating material. The mix design ratios(ISA:DSP), tested were 100:0 to 70:30 (w/w %), with an 10% incriment of DSP. The engineering properties of a lightweight concrete, prepared by incorporating the resultant lightweight aggregates and OPC with aluminum powder as cement bloating agent were analyzed. 
The results indicate that a proper mix design and sintering conditions, including a minimum sintering time of 10 minutes, combined with sintering temperature ranged from 1050-1150℃, are required to produce lightweight aggregates with bulk density less than 1.6 g/cm3. An increase in sludge powder addition (from 0% to 30%) was noted to decrease the required sintering temperature (from 1150℃ to 1050℃), showing the effects of fluxing and energy-saving. 
Two types of typical lightweight aggregates, AH1 and CM1, prepared by mix ratio(ISA:DSP), 100:0 and 80:20, respectively, were evaluated. In general, the density, failure loading and crystallized intensity of AH1 lightweight aggregate were higher than those of CM1. Consequently, for lightweight concrete incorporating AH1 and CM1(referred to as LC-I and LC-II, respectively), the former showed a greater bulk density, compressive strength and thermal conductivity than the latter, under the corresponding conditions of preparation. 
Moreover, for the bulk density and compressive strength, both the LC-I and LC-II, prepared without the addition of bloating aluminum powder, were found to correspond with the requirements of structural concrete and moderate strength concrete, respectively, as specified by ACI 213 R-87. However, in the cases of LC-I and LC-II with addition of 0.2~0.4% aluminum powder, the former corresponds with the moderate strength concrete requirement marginally, whereas the latter were found, for density and compressive strength, between the requirements of moderate strength concrete and non-structural concrete. The data reported here may be of importance to recycling sewage sludge into construction materials for a sustainable solution of waste treatment and management.
關鍵字(中)
  • 下水污泥
  • 污泥灰
  • 燒結
  • 輕質混凝土
  • 輕質骨材
  • 關鍵字(英)
  • lightweight aggregate
  • lightweight aggregate concrete
  • sewage sludge
  • sewage sludge ash
  • sintering
  • 論文目次 目錄I
    表目錄III
    圖目錄V
    第一章 前言1
    1-1 研究緣起1
    1-2 研究目的與內容2
    第二章 文獻回顧4
    2-1 下水污泥資源化技術4
    2-1-1 下水污泥之產量推估與處理處置4
    2-1-2 下水污泥資源化技術7
    2-2 輕質骨材17
    2-2-1 輕質骨材之發展17
    2-2-2 輕質骨材之造粒方法21
    2-2-3 輕質骨材之燒結過程與膨脹機制22
    2-2-4 輕質骨材之材料特性30
    2-3 輕質混凝土38
    2-3-1 輕質混凝土之共同特點38
    2-3-2 輕質混凝土之類型39
    2-3-3 氣泡輕質混凝土之膨化行為41
    2-3-4 輕質混凝土之材料特性45
    第三章 材料與方法56
    3-1 實驗材料56
    3-2 實驗流程與分析方法57
    3-3 實驗配置63
    3-4 實驗操作65
    第四章 結果與討論69
    4-1 下水污泥及污泥焚化灰性質分析69
    4-1-1 基本性質分析69
    4-1-2 化學組成與晶相物種型態73
    4-2 造粒結果77
    4-3 下水污泥灰骨材材料特性分析與燒製條件解析79
    4-3-1 材料特性分析79
    4-3-2 輕質骨材選定97
    4-4 下水污泥灰輕質骨材混凝土材料特性分析100
    4-4-1 容積密度變化101
    4-4-2 抗壓強度發展104
    4-4-3 熱傳導特性109
    第五章 結論與建議112
    5-1 結論112
    5-2 建議114
    參考文獻115
    附錄123
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    指導教授
  • 王鯤生 (Kuen-Sheng Wang)
  • 口試日期 2003-12-20 繳交日期 2004-01-15

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