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二氧化碳速凝木材粒片牡蠣殼粉水泥複合板之性質探討

Investigate on Properties of Rapid Setting of Wood Particle/Oyster Shell Powder Bonded Cement Composites by Carbon Dioxide

摘要


本研究是以二氧化碳速凝法,將木材粒片、牡蠣殼粉和水泥研製成水泥複合板,並探討其適當之製板條件與成板性質。試驗範圍涵蓋水合溫度變化、藥品添加、材料及其重量配比及填料添加量對於複合板性質之影響。將研製之複合板材調濕處理一星期,其後再測定複合板材之物理性質及力學性質。實驗結果如下:添加取代水泥10%之牡蠣殼粉可達最高水合溫度;木材粒片牡蠣殼粉水泥複合板為尺寸安定性佳之板材。CO2可促進水泥之水合作用,即使未添加氯化鈣及矽酸鈉時,亦可促進水泥之硬化,而迅速成板,且製板時間較短,因此較傳統製程之硬化時間經濟。

並列摘要


The optimum manufacturing conditions and forming properties of wood particles, oyster shell powder, and cement to produce composites by using of carbon dioxide were investigated in this study. Test variables were hydration temperature, chemical additives, material, gradients, and amount of fillers in composites. Boards were conditioned for one week, and physical and mechanical properties were investigated. Results were as follows: 10% replacement of cement with oyster-shell showed the highest hydration temperature. Wood particle oyster-shell bonded cement composites had good performance on stability. And accelerated CO2 manufacturing process improved hydration temperature of cement and accelerated cement hardening, even without calcium chloride and sodium silicate. Hence, this process is more economical than conventional process.

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