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題名 | 磷酸鹽含量對廢棄污泥燒製環保水泥之水化特性影響=Influence of Phosphate on the Properties of Eco-cement Made from Waste Sludge |
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作者 | 林凱隆; 林忠逸; 王鯤生; 林家宏; | 書刊名 | 環境保護 |
卷期 | 27:2 2004.12[民93.12] |
頁次 | 頁204-217 |
分類號 | 440.325 |
關鍵詞 | 磷酸鹽; 環保水泥; 抗壓強度; 水化程度; Phosphate; Eco-cement; Degree of hydration; |
語文 | 中文(Chinese) |
中文摘要 | 本研究係針對淨水污泥灰、下水污泥灰及工業污泥灰之作為水泥生料時,廢棄污泥中磷酸鹽含量之對水化作用影響進行探討。結果顯示,三種環保水泥之重金屬溶出均符合法規值。I型環保水泥之C3S與波特蘭水泥相偶。I 型環保泥漿體之初終凝、抗壓強度與水化程度與谺特蘭水泥漿體相似,顯示廢棄污泥可取代20%之生料。刺II及III型環保水泥漿體因含有α-C2S而造成初終凝、抗壓強度及水化程度之延緩。廢棄污泥灰做為水泥原料時,當磷酸鹽大於0.46%,均可能對水泥燒製或水化過程中產生負面的影響。 |
英文摘要 | The study focused on influence of phosphate on the hydration characteristics of water purification sludge ash, sewage sludge ash and industry sludge ash, utilized as cement raw material. The results indicated the leaching concentrations of all three types of enouncement clinkers met the regulatory thresholds. The C3S content in the ECO-I clinkers was similar to that in the OPC. The results show that the ECO-I pastes had a similar setting time, final setting time, compressive strength, degree of hydration compared to the OPC pastes. The results indicate that it is feasible to use sludge ashes and ferrate waste to replace up to 20% of the mineral components of raw materials for cement. A delay in the setting time observed in the ECO-II and ECO-III pastes may be primarily attributed to the larger amounts of α-C2S, which delayed the setting time. In the ECO-II and ECO-III pastes the amount of α-C2S resulted compressive strength retardation of that early stage. Also, ECO-III and ECO-III pastes show lower degree of hydration values at all ages of hydration. The main reason for this sis that the amounts of α-C2S causes the degree of hydration in the ECO-II and ECO-III paste to decrease more than that of pure cement. Therefore, waste sludge ash utilized as cement raw material, the interferences of phosphate>0.46% might produce adverse effects on cement burning or hydration. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。