國內各地廟宇林立，燒香拜拜已是密不可分的傳統之一，也因此會產生大量的香灰，目前香灰並無主要用途，多以廢棄物處理，若能加入瀝青混凝土中且不影響其工程性質，則可達到經濟效益且減少廢棄物。
本研究以香灰替代水泥填充料加入石膠泥瀝青混凝土(Stone Matrix Asphalt, SMA)中，替代方式為以重量取代0%、50%、100%水泥重量，並搭配0.5%木質纖維，進行七項績效試驗，分別為馬歇爾穩定值試驗、馬歇爾流度值試驗、間接張力開裂試驗、垂流試驗、飛散試驗、滯留強度試驗及車轍試驗，根據試驗結果分析各組取代比例的工程性質表現，並判斷香灰加入SMA的可行性。
根據績效試驗結果，隨著香灰取代比例上升，試體的穩定值及抗車轍能力上升、抗開裂能力下降、抗磨損能力及垂流現象無明顯改變，整體傾向更加脆硬的表現。香灰取代為50%時，各項工程性質無明顯缺陷，但香灰取代到100%時，滯留強度指數(Index of Retained Strength, IRS)大幅下降到35%。
根據研究結果，在50%取代比例以下，香灰是能作為填充料替代水泥之材料，後續研究可往50%取代比例以下之工程性質進一步探討。

The country is dotted with temples, and burning incense as part of worship has become an inseparable tradition. This results in a large amount of incense ash, which currently has no major use and is treated as waste.
This study explores the use of incense ash as a replacement for cement filler in Stone Matrix Asphalt (SMA). The replacement is done by weight, substituting 0%, 50%, and 100% of the cement weight with incense ash, along with 0.5% wood fiber. The results of seven performance tests are analyzed to determine the feasibility of incorporating incense ash into SMA.
According to the performance test results, as the replacement ratio of incense ash increases, the stability and rutting tolerance of the samples increase, while the cracking tolerance decreases. There is no significant change in abrasion resistance or draindown phenomenon. When incense ash replaces 50% of the cement, there are no significant deficiencies in the engineering properties, but when the replacement reaches 100%, the Index of Retained Strength (IRS) significantly decreases to 35%.
Based on the study results, incense ash can be used as a filler to replace cement at replacement ratios below 50%.

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