水泥添加劑對土壤剪力強度與植生的影響

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。內容主要為：(1)種子、土樣配比及實驗相關規劃，(2)不同水泥含量對於植生、剪力強度、凝聚力及摩擦角之行為與趨勢探討，(3)不同養護時間對於植生、剪力強度、凝聚力及摩擦角之行為與趨勢探討。其結論得出：添加水泥能使土壤剪力強度增加，養護兩周後不同水泥含量的凝聚力為純土的5.7~9.5倍，摩擦角為3.4~3.7倍；但添加水泥會使發芽率下降，水泥含量7 %、9 %、11 %之土樣在種植30天後約下降28.75~88.75 %，透過添加菇肥後，其發芽率僅下降12.5~31.25 %。若同時考慮強度與植生，水泥含量7 %為最佳選擇，因其強度比5 %水泥含量增加16 %，但發芽率僅低3 %。

關鍵字

剪力強度；酸鹼值；發芽率

並列摘要

The purpose of this study is to investigate the Influence of cement additives on soil shear strength and vegetation effect. The contents are mainly: (1) seed ,different soil sample and experimental related planning, (2) different cement contents on the behavior and trend of vegetation, shear strength, cohesion and friction angle, and (3) different curing times for vegetation, Discussion on the behavior and trend of shear strength, cohesion and friction angle. The conclusion is that the addition of cement can increase the shear strength of the soil. After curing two weeks, the cohesion of different cement contents is 5.7 to 9.5 times that of pure soil and the friction angle is 3.4 to 3.7 times; but the addition of cement will reduce the germination rate. Soil with 7%, 9%, and 11% cement content decreased by approximately 28.75 ~ 88.75% after 30 days of planting. After adding mushroom fertilizer, the germination rate only decreased by 12.5 ~ 31.25%. If both strength and vegetation are taken into consideration, the cement content of 7% is the best choice because its strength is 16% higher than the 5% cement content, but the germination rate is only 3% lower.