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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/64858

    Title: 混合礦碴作為混凝土膠結材料之成效評估
    Authors: 林怡忻;Lin,Yi Xin
    Contributors: 土木工程學系
    Keywords: 電弧爐還原碴;鹼活化技術;混合礦碴膠結材料;arc furnace reductive slag;alkali activation technology;mineralslag mixed bonding materials
    Date: 2014-07-29
    Issue Date: 2014-10-15 14:31:00 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 還原碴含有鈣、矽、鋁之氧化物,與水泥熟料相似,若能替代水泥使用,作為水泥系材料之膠結料使用,除可降低水泥產業所需之高耗能與高二氧化碳排放量,尚能達到廢棄物再利用之綠色效益。
    ;Electric arc furnace (EAF) reductive slag is similar to cement, having high content of calcium, silicon, and aluminum oxides. If EAF reductive slag can be used as bonding materials for concrete, we can achieve waste recycling and reduce the consumption of CO2.
    There have been lots of studies on using industry byproducts as concrete binder materials, the research of EAF reductive slag has not been widely discussed. This research used the mixture of EAF reductive slag, coal fly ash, and blast furnace slag (BFS) as pozzolan materials to replace part of protland cement in making concrete. The interactive comparison and proportioning guidelines of each of the materials were investigated. And then the results are applied to the system of alkali activation.
    The results show that the EAF reductive slag has lower binder quality than BFS. The use of BFS will enhance the compressive strength of mortar. It was also found that some free-MgO contained in EAF reductive slag could bring in some soundness issues. Proper proportioning of the minerals and EAF slag can reduce the sensitivith of the soundness results. Also, in the system of alkali activation, the curing condictions can affect the mortar’s compressive strength. It is suggested that fresh mortar be sealed for a period of 24 hours before it is exposed to the atmospheric environment.
    Appears in Collections:[土木工程研究所] 博碩士論文

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