臺灣博碩士論文加值系統

本研究係針對不同均勻係數(CU2、CU13、CU27)之土壤分別添加不同比例(5%、10%、15%、20%)之地質改良劑(HSC301) 及I型水泥拌合而成的土壤混合物，首先對試驗之土壤進行PH值試驗檢測，進一步了解土樣之酸鹼值是否大於5.3，因ACI 研究指出水泥固化土之PH 值若高於5.3，將有助於與水泥間水化膠結作用之提升，並探討抗壓強度與養護齡期(3天、7天、14天、28天)之關係，另外針對土壤-地質改良劑混合物及土壤-水泥混合物之PH 值、最佳含水量與最大乾密的關係進行探討。
研究結果顯示，不同均勻係數的土壤分別拌合不同比例之地質改良劑及I型水泥的混合物試體，其抗壓強度均隨著養護齡期之增加而增加；且也均隨著地質改良劑及I型水泥添加量的增加而增加，土壤添加地質改良劑混合物的抗壓強度均高於添加水泥的混合物。土壤混合物之PH 值均隨地質改良劑及I型水泥添加量的增加而增加；且土壤混合物之抗壓強度亦隨PH 值之提昇而增加。另外，土壤-地質改良劑混合物及土壤-水泥混合物的最佳含水量均隨地質改良劑及I型水泥添加量之增加而減少，而最大乾密度則反之。

In this study, soil at the different coefficient of uniformity (CU) were added at different proportion (5%, 10%, 15%, 20%) and the Ground Improvement Admixture (HSC301) conditioner and Type I of the soil cement mixture by mixing. Firstly, the experimental value of the soil PH test to gain a better understanding of soil and examine if the pH is greater than 5.3. According to ACI study, if cement solidified soil PH value exceeds 5.3, it will help to enhance the cement hydration, then investigate the relationship between compressive strength with different curing periods of 3 days, 7 days, 14 days, 28 days separately. Additionally, it is required to examine inter-relationship of the pH value, best water maximum and dry density of soil versus HSC301 and soil versus cement modifier
The results showed that soil at the different coefficient of uniformity (CU) mixes with the Ground Improvement Admixture at the different proportion mixtures and type I cement, its compressive strength increases with the ages; and also increases along with the geological of modifier and type I cement increases. The compressive strength of the soil- Ground Improvement Admixture mixture is higher than that of the soil-cement mixture. PH value of the soil mixture increases along with the Ground Improvement Admixture and Type I cement increases; and the compressive strength of soil mixture also increases with the PH value. Moreover, the optimum moisture content for the soil - geology modifier mixture and for the soil - cement mixture increases with reducing of the Ground Improvement Admixture and Type I cement, otherwise the maximum dry density had reverse results.

摘要 I
ABSTRACT II
誌 謝 III
目錄 IV
表目錄 VI
圖目錄 VII
第一章 緒論 1
1.1 研究動機與目的 1
第二章 文獻回顧 2
2.1 台灣地質分區簡介 2
2.2 土壤水泥 5
2.2.1 土壤水泥定義及歷史 5
2.3 土壤水泥之組成 7
2.3.1 適用之土壤種類 7
2.3.2 水之選用 9
2.3.3 水泥對土壤之改善效果 9
2.4 土壤水泥工程特性 10
2.5 土壤水泥之應用 14
2.6 中鋼牌高爐水泥系地質改良劑(HSC301)簡介 16
2.6.1中鋼牌高爐水泥系地質改良劑(HSC301)之應用 17
第三章 研究方法與流程 22
3.1 研究方法 22
3.2 研究流程 24
3.3 試驗材料 26
3.3.1 土壤 26
3.3.2 中鋼牌高爐水泥系之地質改良劑(HSC301) 26
3.3.3 波特蘭水泥 27
3.3.4 拌合水 27
3.4 試驗方法 27
3.4.1 篩分析試驗 27
3.4.2 土壤PH 值試驗 28
3.4.3 夯實試驗 29
3.4.4 抗壓強度試驗 30
第四章 試驗結果與分析 34
4.1 土壤粒徑分析 34
4.2 夯實試驗結果 34
4.3 PH 值試驗結果與分析 36
4.4 抗壓試驗結果與分析 36
第五章 結論與建議 73
5.1 結論 73
5.2 建議 74
參考文獻 75

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