建築營造產業約佔27%碳排放，其中混凝土原料包括水泥、粗骨材及細骨材，本研究以台糖公司生產之牡蠣殼粉，取代不同比例之細骨材，測試混凝土強度。採用之混凝土比例為16.67% 的水泥、33.33% 的細骨材和 50% 10-20 毫米之細骨材，牡蠣殼粉之細骨材取代率包括0%、10%、20%、30% 和 40%。試驗結果發現，牡蠣殼粉細骨材取代率越高，其抗壓強度越低，當取代率達40%，56天抗壓強度仍達到30MPa，符合建築強度要求，同時牡蠣殼粉比重較細骨材輕，取代率達40％時，混凝土減少10%單位重。 The construction industry is responsible for around 27% of carbon emissions. Concrete raw materials consist of cement, Coarse Aggregates, Fine Aggregates, and admixtures. In this study, Oyster shell powder produced by Taiwan Sugar Company replaced Fine Aggregates in different proportions to test the strength of concrete. The proportion of concrete used is 16.67% of cement, 33.33% of Fine Aggregates, and 50% of 10-20 mm aggregates. The replacement rate of Fine Aggregates with Oyster Shell powder includes 0%, 10%, 20%, 30%, and 40%. The test results show that the increase in Oyster Shell content in concrete reduces the strength of the concrete. When the replacement rate reaches 40%, the 56-day compressive strength still reaches 30MPa, which meets the building strength requirements. The Oyster Shell powder has lower specific gravity than sand. When the substitution reaches 40%, the unit weight of concrete is reduced by about 10% compared to the 0% substitution rate.
