- 學位論文
玻璃砂取代量對透水瀝青混凝土性質之影響
Physical properties of porous asphalt concrete containing crashed glass
摘要
全球環保意識高漲，廢棄玻璃利用於道路工程中是未來一大趨勢，也可達到資源再生永續發展的目標，透水鋪面因能迅速將路面積水排除，且對於改善都市熱島效應也有正面的幫助，於台灣地區高溫多雨的環境逐漸受到重視。 本研究先分析玻璃與天然粒料的性質，接著以廢玻璃砂(粒徑#16~#200)，取代天然細粒料 (#16~#200)，TFT-LCD玻璃面板之玻璃砂(粒徑#100以下)，取代天然細粒料(#16~#200)；分成7組不同取代比例級配，搭配爐石粉做為填充料，進行透水瀝青混凝土配合設計求出各組之最佳瀝青含量，進行孔隙率試驗、透水試驗及穩定值、流度值試驗。 綜合實驗結果顯示，經由二次破碎及去除雜物等過程後之玻璃粒料，比重為2.49低於天然粗粒料的2.55，具有粒形佳、硬度高、反光性、低導熱性等優點，但因玻璃砂較天然粒料細小，以玻璃砂取代天然粒料時，需增加瀝青用量，來包覆玻璃砂，造成成本提高。結果顯示適量的玻璃砂有助於提高穩定值；而添加過量的玻璃砂會造成流度值偏高。
並列摘要
With the recent increase of global environmental consciousness and energy shortages, the crashed glass used in road pavements will become the major trend. The goals of resources recovery and sustainable development can be achieved. Due to high temperature and intensive rain in the Taiwan, the porous asphalt pavements have been adopted gradually in recent years. Besides the rapid drainage of surface water through its matrix, a positive benefit reducing the urban heat island effect is also expected. Properties of crashed glass, crashed TFT-LCD glass, and natural aggregate are analyzed in this research. Seven proportions of porous asphalt concrete containing natural aggregate and both the crashed glass are made. In the AC specimens, different weights of natural fine aggregate are replaced the crashed glass, #16~#200 natural fine aggregate are replaced by crashed #16~#200 glass and #100 TFT-LCD glass respectively. It also contains pulverized furnace slag powder as filler in the AC specimens. Marshall test is held to determine the optimum asphalt contents of the proportion proposed above. The void ratio, permeability, Marshall stabilities and flow values of the AC specimens made in this study are then measured. The specific gravity is 2.49 of crashed glass which is lower than 2.55 of natural fine aggregate. Replacing natural aggregate by crashed glass will lead increase of the asphalt consumption and cost of the asphalt concrete. Marshall flow values of the AC specimens also increasse when glass aggregate substitution increases.