添加牡蠣殼粉改善紅壤抗壓強度之探討

本研究針對屏東縣內埔鄉老埤系紅壤，以不同重量百分率之牡蠣殼粉，進行紅壤抗壓強度改善，經本研究初步試驗結果顯示：牡蠣殼粉添加重量百分率為0、0.25、0.3、0.35、0.4、0.45、0.5、0.6%配合拌合紅壤，在連續7天澆灌之自然沉陷處理後，經28天後之抗壓強度測定其抗壓強度分別為3.9、4.3、4.8、5.2、5.8、5.9、25.3、4.8kgf/cm^2，顯示添加0.5%之牡蠣殼粉於紅壤可顯著提升其抗壓強度，此有利提供牡蠣殼粉使用於農路鋪面。

關鍵字

牡蠣殼粉；抗壓強度；紅壤

並列摘要

This study is aimed at the Laterite of Neipu Township, Pingtung County Laopei Series, using different weight percentages of oyster shell powder to improve the compressive strength of the Laterite. The primarily results had shown as the compressive strength of oyster shell powder added into Laterite after 28 days, and is changed as follows: under natural settlement with once a day for a week in spraying water, the added weight ratio of oyster shell powder was 0, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5 and 0.6%. The results had shown as follow: The compressive strength beyond 28 days was 3.9, 4.3, 4.8, 5.2, 5.8, 5.9, 25.3 and 4.8 kgf/cm^2. To added 0.5% oyster shell powder in the Laterite could achieve the significant improvement of compressive strength, and then it could be applied for farm road pavement.