教師資料查詢 | 類別: 期刊論文 | 教師: 高思懷 GAU SUE-HUAI (瀏覽個人網頁)

標題:The Effects of the Mechanical-Chemical Stabilization Process for Municipal Solid Waste Incinerator Fly Ash on the Chemical Reactions in Cement Paste
學年101
學期2
出版(發表)日期2013/04/01
作品名稱The Effects of the Mechanical-Chemical Stabilization Process for Municipal Solid Waste Incinerator Fly Ash on the Chemical Reactions in Cement Paste
作品名稱(其他語言)
著者Chen, Cheng-Gang; Sun, Chang-Jung; Gau, Sue-Huai; Wu, Ching-Wei; Chen, Yu-Lun
單位淡江大學水資源及環境工程學系
出版者Kidlington: Pergamon Press
著錄名稱、卷期、頁數Waste Management 33(4), pp.858-865
摘要A water extraction process can remove the soluble salts present in municipal solid waste incinerator (MSWI) fly ash, which will help to increase the stability of the synthetic materials produced from the MSWI fly ash. A milling process can be used to stabilize the heavy metals found in the extracted MSWI fly ash (EA) leading to the formation of a non-hazardous material. This milled extracted MSWI fly ash (MEA) was added to an ordinary Portland cement (OPC) paste to induce pozzolanic reactions. The experimental parameters included the milling time (96 h), water to binder ratios (0.38, 0.45, and 0.55), and curing time (1, 3, 7 and 28 days). The analysis procedures included inductively coupled plasma atomic emission spectroscopy (ICP/AES), BET, mercury intrusion porosimetry (MIP), X-ray diffraction (XRD), and nuclear magnetic resonance (NMR) imaging. The results of the analyses indicate that the milling process helped to stabilize the heavy metals in the MEA, with an increase in the specific surface area of about 50 times over that of OPC. The addition of the MEA to the OPC paste decreased the amount of Ca(OH)2 and led to the generation of calcium–silicate–hydrates (C–S–H) which in turned increased the amount of gel pores and middle sized pores in the cement. Furthermore, a comparison shows an increase in the early and later strength over that of OPC paste without the addition of the milled extracted ash. In other words, the milling process could stabilize the heavy metals in the MEA and had an activating effect on the MEA, allowing it to partly substitute OPC in OPC paste.
關鍵字Milling process;Municipal solid waste incinerator fly ash;Pozzolanic reaction;C–S–H;Stabilization,Heavy metal
語言英文
ISSN0956-053X
期刊性質國外
收錄於SCI
產學合作
通訊作者Sun, Chang-Jung
審稿制度
國別英國
公開徵稿
出版型式電子版
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