垃圾焚化底渣全資源化應用作為CLSM粒料之可行性研究

Research on the feasibility of waste incineration bottom ash resources as CLSM aggregates

張孝全(Hsiao-Chuan Chang)

指導教授 ： 王韡蒨

中原大學/工學院/土木工程研究所/碩士(2016年)

https://doi.org/10.6840/cycu201600888

摘要

本研究探討垃圾焚化底渣全取代天然粒料製作CLSM之可行性。先探討底渣CLSM性質與天然粒料CLSM性質差異，並與施工規範要求比較，分別探討工作性、單位重、氯離子含量、落沉試驗、凝結時間及抗壓強度。對於不符合規範要求配比，添加強塑劑及氯化鈣方式探討改善性質的可行性。
結果顯示，當底渣取代天然粒料時，工作性會改善，抗壓強度降低，水溶性氯離子含量、凝結時間及落球試驗凹痕直徑均會隨底渣取代比例增加而增加。底渣CLSM的水泥用量增加時，工作性會改善、水溶性氯離子含量減少，凝結時間縮短，24 hr落球凹痕直徑不變，且28天抗壓強度增加。底渣CLSM的粗粒料用量增加時，工作性會改善，凝結時間縮短，24 hr落球試驗凹痕直徑減少，且28天抗壓強度顯著增加。底渣CLSM的水灰比用量增加時，工作性隨之改善，凝結時間及落球試驗凹痕直徑增加，28天抗壓強度降低。底渣CLSM添加強塑劑時，工作性、水溶性氯離子含量、凝結時間及落球凹痕直徑均隨強塑劑用量增加而增加，但28天抗壓強度則降低。底渣CLSM添加氯化鈣時，工作性降低，水溶性氯離子含量增加，凝結時間及落球凹痕直徑縮減，而抗壓強度增加。底渣CLSM同時添加強塑劑及氯化鈣時，可以提升工作性及縮短凝結時間的效果。
底渣要全資源化應用於CLSM，並符合施工規範內各項要求，是可行的，但要善加使用強塑劑以改善工作性，使用氯化鈣以縮短凝結時間及提高抗壓強度。然而，對於品質較低的工程需求可藉調整水泥用量、粗粒料用量及水灰比等方式改變CLSM性質來達成。

關鍵字

垃圾焚化底渣 ； 控制性低強度材料

並列摘要

The research discussed that waste incineration bottom slag replaed overall feasibility of natural aggregates producing CLSM. To explore the difference of CLSM property between the bottom slag aggregates and nature, and compare the construction specifications. The key factors incuded workability, unit weight, chloride ion content of fresh concrete, ball drop, and compressive strength. If the construction didn’t achieve request, it could increase superplasizer and calcium chloride to explore ways of improving properties.
The result showed that when the bottom slag replaced natural aggregates, workability improved, compressive strength decreased. Others, chloride ion content, setting time and the ball drop test diameter would increase with the increasing proportion of bottom slag replacement. When the cement amount of bottom slag CLSM increased, workability improved, water-soluble chloride ion content reduced, setting time shortened, falling Ball constant diameter unchanged in 24 hr and compressive strength increased in 28 days. When the coarse aggregate amount of bottom slag CLSM increased, workability improved, setting time shortened, ball drop test diameter reduced in 24 hr, and compressive strength increased significantly in 28 days. When bottom slag CLSM added strong plasticizer, workability, water-soluble chloride ion content, setting time, and the falling ball diameter increased with the increasing of strong plastic dosage. However, compressive strength was reduced in 28 days. When the bottom slag CLSM added calcium chloride, workability was reduced, the water-soluble chloride ion content increased, setting time and the falling ball diameter reduced, and the compressive strength increased. When the bottom slag CLSM added strong plastic agent and calcium chloride, workability improved and setting time shortened.
It was feasible to apply bottom slag for the whole resource used in CLSM, and meet the requirements within the construction specifications. However, it needed to make the best use of strong plasticizer for improving the work and calcium chloride for shortening setting time and improving compressive strength. However, lower demand for quality engineering could achieve by adjust the amount of cement, coarse aggregate dosage, water-cement ratio, and change the nature of CLSM.

並列關鍵字

Trash incineration bottom ash ； CLSM

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