混合礦碴作為混凝土膠結材料之成效評估

林怡忻

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混合礦碴作為混凝土膠結材料之成效評估

林怡忻 , Masters　　Advisor：黃偉慶　　

繁體中文

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

Abstract │ Reference (26) │ Altmetrics

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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.

Reference ( 26 ) 〈TOP〉

行政院公共工程委員會，「公共工程高爐石混凝土使用手冊」(2001)。
連結：
林湧昱，「以電弧爐還原碴製成複合無機聚合物之研究」，國立中央大學土木工程研究所碩士論文（2012）。
連結：
戴詩潔，「高嶺石鋁矽酸鹽聚合材料之研究」，國立台北科技大學材料及資源工程系(2005)。
連結：
Bakharev T., Sanjayan J. G., and Cheng, Y. B.(1999), “ Alkali activation of Australian slag cement.” Cement and Concrete Research, 29(1), pp. 113-120.
連結：
Criado, M., Palomo, A., Ferna´ndez-Jime´nez, A. (2005) , “ Alkali activation of fly ashes. Part 1: Effect of curing conditions on the carbonation of the reaction products .” Fuel 84, pp. 2048–2054.
連結：

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