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    Title: 水泥含量對土壤剪力強度與植生的影響
    Other Titles: Influence of Cement Additions on Soil Shear Strength and Vegetation Growth
    Authors: 洪勇善;吳朝賢;林思廷;詹賢煒
    Keywords: 土壤剪力強度;發芽率;水泥;菇肥;Shear strength of soil;germination percentage;cement;mushroom waste compost
    Date: 2021-12-04
    Issue Date: 2021-12-28 12:12:21 (UTC+8)
    Abstract: 本研究旨在探討水泥添加劑對土壤剪力強度與植生的影響,各種配比組合的土壤皆經過 1 - 14 天養護,檢測 pH 值、剪力強度以及種子發芽率,提供工程以水泥做為添加劑應用於改善坡面土壤強度的參考。研究結果獲得於養護 14 天,水泥含量 3%增至 11%,凝聚力由187 kPa 增至 313 kPa,約為原土壤 5.7 - 9.5 倍;摩擦角由 58.6º 增加至 66.6º,約為原土壤 3.4 - 3.7 倍。此外,菇肥的添加確能明顯提升草籽的發芽率,但添加菇肥卻造成土壤剪力強度大幅下降,以水泥含量 7% - 11%為例,若含 20%菇肥後將迫使凝聚力與摩擦角分別下降65% - 64%與 53% - 34%。綜合考量植生與土壤剪力強度,水泥含量 7%為最佳選擇,因其發芽率僅較水泥含量 5%下降 3%(30 天發芽率尚有 57%),但剪力強度卻增加 16%。
    Relation: 2021 中華水土保持研討會摘要論文集,頁149-155
    Appears in Collections:[Graduate Institute & Department of Civil Engineering] Proceeding

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