| Summary: | 碩士 === 國立高雄應用科技大學 === 土木工程與防災科技研究所 === 102 === This study aims to employ stainless steel oxidizing slag in partially or wholly replacing aggregate to made level 2 self-compacting concrete. In the mixtures, natural aggregates are substituted by stainless steel oxidizing slag with various ratios (e.g., 0%, 50%, and 100%, by weight) and stainless steel reducing slag replaces for Portland cement with different percentages (i.e. 0%, 10%, 20%, and 30%, by weight) to investigate fresh and hardening engineering properties. The fresh characteristics were assessed via slump test, slump flow test, V-funnel flow test, and box-shaped container test. The testing results show that the proposed self-compacting concrete mixtures have the slump flow to be greater 550mm, V-funnel flow time of 7 ~ 20sec, and the height of box-shaped container test of 300mm or higher. In addition, 28-day the compressive strength and pulse velocity of the studied concrete are greater than 280 kgf/cm2 and 4000 m/s, respectively; the surface resistivity at 56 days are measured to be greater than 20 kΩ-cm. In summary, stainless steel oxidation slag can be used as aggregates in self-compacting concrete production, achieving well benefits of recycling industrial waste for sustainable development
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