臺灣博碩士論文加值系統

本研究主要探討含低溫鍛燒稻殼灰漿體之力學與耐久性質，試驗試體包括水泥砂漿和鹼激發漿體兩種。首先依據CNS 3036進行試驗，探討稻殼灰之使用性，結果顯示經過四種鍛燒溫度(400-1000 °C)後之稻殼灰皆符合規範要求。接著在水灰比0.6下，以體積部分取代水泥進行抗壓強度。結果顯示使用低溫鍛燒稻殼灰之試體抗壓強度較高，使用鍛燒溫度400 °C之稻殼灰比控制組高約 2.4%，600 °C之稻殼灰比控制組高約41.2%，推測原因為稻殼灰富含碳基成分及孔隙造成水灰比降低進而使強度提升。此外，結果亦發現400 °C鍛燒之稻殼灰具有抑制鹼矽粒料反應的效果。鹼激發漿體試驗中使用稻殼灰以體積部分取代爐石粉。試驗結果顯示，使用高濃度之鹼性激發劑可得較高的抗壓強度。然而，添加稻殼灰過多時降低耐久性，最佳的添加量約在10%。使用混合灰時，結果顯示添加飛灰可提升91天強度，但添加過多稻殼灰仍會將低強度，微觀分析顯示試體中有乾縮裂縫，推測為強度降低之因素。

This study explores the mechanical properties and durability of the paste with rice husk ashes (RHA) calcined at low temperature. The specimens included the cement mortar and the alkali-actived slag paste. The experiments in accordance to CNS 3036 were firstly conducted. Results showed that the four RHA’s calcined at temperature ranging from 400 to 1000 °C met the requirements. The cement mortar specimens were then prepared by partial replacements for the cement using the RHA at water-cement ratio of 0.6. Results showed that those specimens with RHA had higher compressive strength than the plain. The one with RHA calcined at 400 °C had strength higher than the plain by 2.4% and the one with RHA calcined at 600 °C had strength higher by 41.2%. It is assumed that the RHA’s had high carbon content and micropores so that the strength was increased. In addition, the RHA calcined at 400 °C were found to inhibit the ASR expansion. On the other hand, in alkali-activated specimens, the slag was partially replaced by the RHA. Results showd that the application of the highly alkali solution induced high strength. However, the excess RHA addition reduced durability and the optimum addition was around 10%. By using the combined coal fly ashes and RHA, the 91-day strengths were increased by the fly ash. Again, the excess RHA addition reduced the strength. The microanalyses showed that the specimens had micro shrinkage cracks, possibly reducing the strengths.

摘要
Abstract
誌謝
目錄
表目錄
圖目錄
第一章 緒論
1.1 研究動機
1.2 研究目的
1.3 研究方法與流程
第二章 文獻回顧
2.1　水泥
2.2　卜作嵐材料
2.2.1　水淬高爐石粉
2.2.2　飛灰
2.2.3　稻殼灰
2.2　鹼激發材料
2.3　無機聚合物
2.3.1　反應機理
2.3.2　微觀結構
2.3.3　物化性質
2.3.4　實務應用
第三章　試驗規劃
3.1　試驗內容及變數
3.1.1　試驗內容
3.1.2　試驗變數
3.1.3　編碼說明
3.2　試驗材料與設備
3.2.1　試驗材料
3.2.2　試驗設備
3.3　試驗設計與項目
3.3.1　物理性質試驗
3.3.2　力學性質試驗
3.3.3　耐久性質試驗
3.3.4　微觀分析
第四章　試驗結果與討論
4.1　先期試驗
4.1.1　黏度試驗
4.1.2　拌合方法
4.1.3　鹼激發劑溶液比例
4.2　水泥砂漿
4.2.1　力學試驗
4.2.2　乾縮試驗
4.2.3　抗鹼矽粒料反應試驗
4.2.4　熱壓膨脹試驗
4.3　鹼激發水泥漿
4.3.1　力學試驗
4.4　鹼激發水淬爐石粉漿
4.4.1　力學試驗
4.4.2　耐久試驗
4.5　X光繞射試驗分析
4.6　掃描式電子顯微鏡分析
第五章 結論與建議
5.1 結論
5.1.1 水泥砂漿
5.1.2 鹼激發漿體
5.2 建議
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附錄一 坍流度試驗結果

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