鹼激發銲渣膠結材之製作與性質

MANUFACTURING AND PROPERTIES OF ALKALI-ACTIVATED WELD-SLAG BINDERS

林孟言(Meng-Yen Lin) ； 黃忠信(Jong-Shin Huang)

《中國土木水利工程學刊》 34卷1期 (2022/03) Pp. 41-52

https://doi.org/10.6652/JoCICHE.202203_34(1).0005

摘要

為提供銲渣之材料資源化再利用，同時，取代高耗能及高二氧化碳排放量製程之卜特蘭水泥，將不同配比設計之銲渣與廢玻璃粉末混合，利用一高溫拌合之特殊製程，製作鹼激發銲渣膠結材。藉由一系列試驗量測與分析比較，探討鹼激發銲渣膠結材之體積膨脹與最佳拌合製程，經由改變銲渣取代率、鹼活化劑中之鹼當量與水膠比、銲渣粉末細度及高溫養護條件等，獲得體積穩定且抗壓強度高之最佳配比設計。試驗結果發現，最佳拌合製程與配比設計所製成鹼激發銲渣膠結材，經適當高溫養護後抗壓強度可高達49 MPa，因此，鹼激發銲渣膠結材可取代卜特蘭水泥漿體製成新型營建材料。

關鍵字

銲渣 ； 鹼激發 ； 膠結材 ； 廢玻璃粉末

並列摘要

Weld slag can be utilized as the raw material in the production of alkali-activated binder for the replacement of Portland cement to reduce energy cost and carbon dioxide emission. In the study, weld slags were first ground and then mixed with different amounts of waste glass powders and various activators to make alkali-activated weld-slag binders under a high temperature manufacturing process. By conducting a series of tests, the effects of weld-slag replacement percentage, alkaline equivalent content and water/binder ratio of activator, fineness of weld-slag powders and curing temperature on the volumetric expansion and compressive strength of alkali-activated weld-slag binders were evaluated. As a result, the optimal mixing process, mixture design and curing temperature for making the specimens with volumetric stability and high compressive strength were proposed. It is found that the compressive strength of the alkali-activated weld-slag binders made under the optimal conditions can reach up to 49 MPa. Hence, the alkali-activated weld-slag binder can replace Portland cement paste as a novel construction material.

並列關鍵字

weld slag ； alkali-activation ； binder ； waste glass powder

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