臺灣博碩士論文加值系統

本研究主要是探討水泥砂漿中添加再生細粒料取代部分天然細粒料對力學性及物理性與耐久性之影響。再生細粒料適當的取代天然細粒料可以減少天然資源之利用。本研究主要利用抗壓強度試驗、水中磨耗試驗、超音波試驗及吸水率試驗、初始表面吸水試驗、和電阻率試驗、硫酸鹽試驗探討再生水泥砂漿之耐久性。研究結果顯示，在不同水灰比，兩種再生細粒料，取代量為25%，抗壓強度與控制組相似。當取代量超過50%時，水泥質材料之性質會隨著提高水灰比及再生細粒料取代量增加而降低，取代量愈大吸水率愈高，抗壓強度與耐久性愈低。各組由取代量小而大依序為控制組、R1A組、R2A組、R1B組、R2B組、R1C組、R2C組。

This study was focused on the mechanical and physical properties and durability in the modified mortar which the fine aggregates were partially replaced by recycled fine aggregates. Proper replacement of fine aggregates by recycled fine aggregates would reduce use of natural resources. This study mainly used various durability test to investigate in specimens with various water/cement ratio, various recycled fine aggregates content. Properties such as compressive strength, abrasion resistance, ultrasonic pulse velocity, water absorption, initial surface absorption, electrical resistivity, resistance to sulfate attack were also examined. Test results indicate that different water-cement ratio, two kinds of recycled fine aggregates, replacement of 25%, similar to the compressive strength and the control group. When the amount exceeds 50% replacement, Properties of the cementitious material will decrease as the water-cement ratio,and the amount of recycled fine aggregates replaced by a increase. The greater the amount replaced in the higher the surface water absorption, the lower the compressive strength and durability. The replacement percentage is the controlled surface water absorption and compressive strength, durability. The replacement percentage from low value to high value are ranked as control group, R1A group, R2A group, R1B group, R2B group, R1C group, R2C group.

第一章 緒 論 1
1.1 研究動機與背景 1
1.2 研究目的 1
1.3 研究方法與流程 2
第二章 文獻回顧 4
2.1 水泥水化生成物 4
2.2 混凝土孔隙結構 5
2.3 再生粒料基本性質 6
2.4 配比設計注意事項 6
2.5 水泥質材料之性質 6
第三章 試驗計畫 10
3.1 試驗材料 10
3.2 基本材料性質 11
3.3 配比設計 11
3.4 試驗方法、儀器與設備 12
第四章 結果與討論 29
4.1 抗壓強度 29
4.2 超音波波速 31
4.3 磨耗損失(水中法) 32
4.4 吸水率 34
4.5 初始表面吸水率 35
4.6 電阻率 38
4.7 硫酸鹽浸泡 39
第五章 結論與建議 70
5.1 結論 70
5.2 建議 70
參考文獻 72

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