近年營建剩餘土問題日趨嚴重，對生態環境造成相當大的衝擊。台灣地區之營建剩餘土含有大量鋁矽酸鹽礦物，本研究利用此化學特性，探討營建剩餘土應用於無機聚合物之可行性，以取代耗能較大的波特蘭水泥，除使營建剩餘土達到資源化之目的外，亦能降低無機聚合膠結材之原料成本。

本研究首先分析營建剩餘土之化學成分，並以煅燒方式提高營建剩餘土之活性，再藉由改變鹼激發劑配比、水膠比等控制因素，以探討其對膠結材抗壓強度之影響。研究結果顯示，營建剩餘土煅燒至850℃持溫6小時具有較佳活性，粉土所製成之無機聚合膠結材齡期91天之最佳抗壓強度為930 kgf/cm2，黏土、淤泥及皂土所製成膠結材齡期91天之抗壓強度則為750~800kgf/cm2。若將此類營建剩餘土所製成膠結材應用於砂漿，粉土砂漿齡期91天抗壓強度為820kgf/cm2，高於水泥砂漿齡期91天之抗壓強度726kgf/cm2，所以，煅燒後營建剩餘土為良好無機聚合之原料。

In recent years, the problem of construction waste soil becomes more and more serious, causing a considerable impact on ecological environment. Construction waste soil in Taiwan is composed of lots of aluminum-silicates, which are the primary minerals for raw materials of inorganic polymers. In the study, the feasibility of using construction waste soil as a raw material of inorganic polymers is investigated and the replacement of high-energy-consumption Portland cement by inorganic polymers is also discussed. Hopefully, construction waste soil can be reused and the cost of inorganic polymers is thus reduced.

At first, the chemical constituents of construction waste soil are characterized. Then, the construction waste soil is calcined at different temperatures to enhance its chemical reactivity. Next, mix proportion and water-binder ratio are taken into account in determining the maximum compressive strength of inorganic polymers. Experimental results indicate that the optimum calcination temperature of construction waste soil is 850℃ for lasting six hours. When calcined silt is used as a raw material of inorganic polymers, its maximum 91-day compressive strength is 930 kgf/cm2. When calcined clay, sludge and bentonite are used as raw materials of inorganic polymers, their maximum 91-day compressive strengths are 750~800kgf/cm2. Calcined construction waste soil can be used as a binder in the production of mortars. The maximum 91-day compressive strength of construction waste soil mortars, 820 kgf/cm2, is higher than that of cement mortars, 726 kgf/cm2. Therefore, the calcined construction waste soil can be used as a raw material of inorganic polymers and employed as a binder in mortars.

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