醫療垃圾焚燒灰電弧爐熔渣的水化特性

摘要：為考察醫療垃圾焚燒灰電弧爐熔渣用作水泥摻合料的可行性,研究了熔渣的摻入對普通硅酸鹽水泥水化特性的影響.結果表明:熔渣具有潛在的活性,適量摻入熔渣能降低水泥漿體中Ca(OH)2含量,增加水化產物C-S-H的數量,改善水泥漿體微觀結構;但若熔渣摻量過多,則水泥熟料相對較少,使熔渣的活性難以完全被激發,導致熔渣水泥強度降低;熔渣水泥早期(7 d)抗壓強度較低,但后期強度增加明顯,摻渣量10%的熔渣水泥60 d的抗壓強度達到普通硅酸鹽水泥的103%,熔渣的摻量宜控制在10%左右.Abstract：The influence on the hydration characteristics of ordinary Portland cement(OPC) incorporated with slag was studied in order to investigate the feasibility of the slag from electric arc melting furnace of hospital waste incineration ash as a cement admixture. It is proved that since slag has the potential hydration activity, if ordinary Portland cement was blended with quantitative slag, Ca (OH)2 in cement pastes would be reduced, and C-S-H filling the pore in hydration product would be increased, so microstructure of SBC pastes would be improved. But, if the amount of slag was excessive, the cement clinker would be relatively less. The hydration activity of the slag was impossible to be completely activated, resulting in reduced strength of SBC. The compressive strength of SBC pastes with replacement of 10% at the early curing stages (7 d)was lower, however, it would be apparently higher at later curing stages (60 d), which would reach 103% of the OPC pastes. Therefore, the addition dosage of slag should be about 10% if the slag is used as a partial cement substitute. 作者： 劉漢橋[1]魏國俠[2]張曙光[3]張書庭[4]張于峰[4] Author： LIU Han-qiao[1]  WEI Guo-xia[2]  ZHANG Shu-guang[3]  ZHANG Shu-ting[4]  ZHANG Yu-feng[4] 作者單位： 天津大學環境科學與工程學院,天津,300072;天津城市建設學院能源與機械工程系,天津,300384;天津泰達環保有限公司,天津,300350天津城市建設學院能源與機械工程系,天津,300384天津泰達環保有限公司,天津,300350天津大學環境科學與工程學院,天津,300072 期 刊： 天津大學學報   ISTICEIPKU Journal： JOURNAL OF TIANJIN UNIVERSITY 年，卷(期)： 2010, 43(4) 分類號： X705 關鍵詞： 醫療垃圾    焚燒灰    電弧爐    水化    水泥    Keywords： hospital waste    incineration ash    electric arc melting furnace    hydration    cement    機標分類號： TB3 TQ1 機標關鍵詞： 醫療    垃圾焚燒灰    電弧爐    熔渣    水化特性    Waste Incineration    普通硅酸鹽水泥    would    Portland cement    strength of    waste incineration    水泥漿體    抗壓強度    microstructure    cement clinker    quantitative    水泥摻合料    influence    微觀結構    水泥熟料 基金項目： 國家自然科學基金杰出青年科學基金，中國博士后科學基金

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