臺灣水庫每年約有一千四百萬噸的淤泥沉積，嚴重縮短了水庫壽命，若能找到適當再利用方法，不僅可以延長水庫壽命並使淤泥具有經濟價值。由於台灣山區的地質條件，大多具有頁岩或黏土等礦物，經沖刷流入水庫後與淤泥混合，其中成分以氧化矽(SiO2)與氧化鋁(Al2O3)以及其他類鹼金、鹼土元素，如鈉、鉀、鈣及鎂為主，適合融為玻璃，並衍生結晶玻璃產品，並在實驗中加入氧化鈣(CaO)以及氫氧化鈉(NaOH)為修飾劑。研究中第一階段實驗可從DTA圖中發現添加修飾劑越多，各個溫度點有降低的趨勢，並可以從XRD圖中看到結晶相一者為鈣鋁黃長石，另一者為透輝石和輝石共生。第二階段以不同升溫速率計算動力學參數及結晶活化能，並以不同熱處理溫度及持溫時間製成結晶玻璃。動力學參數結果與樣品SEM剖面圖對應後顯示鈣鋁黃長石為表面結晶，而透輝石和輝石共生礦物為體內結晶，維度為二維，推測是由於鈣鋁黃長石體內結晶活化能過高，而透輝石和輝石共生礦物有達到整體結晶。顯微結構部分兩者皆為樹枝狀結晶，會隨著熱處理溫度升高以及持溫時間加長結晶長度會有變長的趨勢。另外耐酸鹼性質和體密度會隨著熱處理溫度變高以及持溫時間加長會有變高的趨勢，隨著結晶性愈佳，孔隙率和吸水率則是降低。

In Taiwan, the sediment in water reservoir has a precipitates of mean amount of 14 million tons annually. It shortens the usage life of water reservoir heavily. If a suitable recycling method is found, it can not only extend the life of reservoirs but also raise the economic value of the sediment. Due to the geologic condition, the composition in the mountain areas of Taiwan includes shale and clay minerals, which is washed into the reservoir and mixed with the sludge. The components include silicon, alumina and other types of alkali, alkaline earth elements, such as sodium, potassium, calcium and magnesium. Calcium oxide and sodium hydroxide are added as modifier in the experiment.
At the first stage of the experiment, DTA diagram shows that the temperature of each point decreases as the more modifier added. Also the XRD patterns shows that one of the crystal phases is gehlenite and the other is diopside coexisting with augite. The second stage was the calculation of the kinetic parameters and the active energy of crystallization at different heating rate. Also, the manufacture of glass ceramics using different temperature during the heat treatment and different holding time.
The relationship of the kinetic parameters and the cross-section diagrams of the samples shows that gehlenite is surface crystallization; while the diopside coexisting with augite is bulk crystallization, which is two-dimensional growth of crystal. The reason causing gehlenite crystal on the surface may be the active energy of bulk crystallization was too high to reach. However, diopside coexisting with augite had reached the active energy of bulk crystallization. The SEM diagrams show that both of the crystallization of them are dendrite, and the crystalline length increase as the temperature of heat treatment increase or the longer of the holding time. Also, the chemical endurance and bulk density increase with the above-mentioned conditions, but the water absorption and the porosity decrease, it may be cause by the better crystallinity.

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