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碩士論文公告區 |
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| 年度： | 96 | |
| 姓名： | 呂松吉(Sung-Chi Lu) | |
| 論文題目(中)： | 管溝開挖砂性土壤與底灰產製控制性低強度回填材料之性質研究 | |
| 論文題目(英)： | The Study of Controlled Low Strength Material Using Sandy Soils from Trench Excavation Mixed with Bottom Ash | |
| 摘要(中)： | ||
| 本研究利用兩種回收再利用材料(砂性土讓、底灰)，經處理將較大顆粒去除後，以不同水灰比及不同之砂性土讓與底灰比例，透過一系列試驗探討其對於控制性低強度材料的抗壓強度影響。本研究結果水灰比降低則試體強度增高，顯示控制性低強度材料抗壓強度主要還是取決於配比中水灰比之高低，抗壓強度與水灰比成反比之關係，尤其當水灰比小於1.60∼1.75時強度明顯提高。本實驗結果亦顯示添加底灰會使強度增加，而初步推論添加底灰比例若超過20％∼25％時則強度增加幅度會明顯趨於平緩。由實驗結果初步推論當水灰比小於2.5時，則可適量提高底灰之比例，有助於強度的發展，此水灰比有待進一步驗證。由實驗結果本研究建議依工程實務狀況水灰比可選擇在1.40∼2.20之間，添加底灰之比例可選擇在20％∼40％之間，則可符合目前我國對CLSM之強度及工作度的要求。 | ||
| 摘要(英)： | ||
| The study was designed to investigate the mechanical properties of controlled low strength material (CLSM) with the use of re-cycled construction materials such as sandy soils from trench excavation and bottom ash from power plant furnace. A series of tests were conducted at 3 water/cement ratios (1.41, 1.71, and 2.18) and sand soils mixed with bottom ash for selected volume percentages (100:0, 80:20, and 60:40). The results of study indicated that the compressive strength of CLSM is mainly dependent upon the w/c ratio. The lower w/c ration resulted in higher strength of CLSM, especially when w/c ratio is smaller than about 1.6~1.75, the strength increases even more significantly. The results of study also revealed that strength of CLSM also increases with increasing volume percentage of the bottom ash. However, the study preliminarily concluded that the increase tends to become lesser when the bottom ash is greater than about 20-25%. In addition, the results of the study also revealed a preliminary finding that when w/c ratio is smaller than 2.5, the strength of CLSM could be enhanced by properly increasing the volume percentage of bottom ash. This water/cement ratio of 2.5 should be confirmed by further tests and study. For the practical application of the CLSM in the field, the study suggested that w/c ratio between 1.4-2.2 and volume percentage of bottom ash between 20-40% may be used in accordance with project requirements in terms of strength and workability. |
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| 檔案： | 沒有相關檔案 | |
| 相關連結： | http://ethesys.lib.cyut.edu.tw/ETD-db/ETD-search-c/view_etd?URN=etd-0216108-212157 | |