纖維增強材料一直以來都是國內外學者的熱門研究主題。一般纖維都是使用鋼纖維，碳纖維和玻璃纖維作為掺合料，且研究成果已經非常豐富。然而利用天然纖維改善材料的性能相關的研究卻非常少。本研究使用改質後的桂竹纖維作為掺合料和水泥砂漿結合，製作出竹纖維強化水泥砂漿，並通過力學試驗測試竹纖維強化水泥砂漿的力學性質。在力學試驗過程中，使用了數位影像相關法（Digital Image Correlation），在試驗的過程中，通過黑白數位相機拍攝試體的變化，並導入Vic-2D軟體，觀察竹纖維水泥砂漿的應變場變化及破壞模式。試驗結果顯示，當竹纖維含量越多時，試體的強度會下降，然而在韌性方面的表現則有所提升。除了對竹纖維水泥砂漿作力學試驗的測試，本研究還使用了Abaqus有限元素軟體建立具隨機分佈竹纖維水泥砂漿的3D模型，觀察模型內部纖維軸力的分佈情況。此外Abaqus數值模型的建立也能了解到當纖維和水泥砂漿之前的握裹力是完美握裹情況時，對整體材料產生的影響，進而在製作試體時能夠調整材料的製作方式，提升竹纖維強化水泥砂漿的力學性質。

Fiber-reinforced material has been a popular topic of research in recent years. Typical Fiber reinforcement such as steel fiber, carbon fiber and glass fiber composite has been studied for several years and there has been a lot of research results since then. However, there are little researches regarding the use of natural fiber as a reinforcement in cement mortar. The present study is to investigate the mechanical properties of bamboo fiber reinforced cement mortar. Bamboo used in this study is Makino bamboo and is alkali treated to improve the interfacial bonding between the cement mortar and the bamboo fiber. Digital Image Correlation technique was used in this study, during the process of the experiment, monochrome camera captured the specimen’s behavior and by using Vic-2D software, the strain field and failure mode of the specimen can be observed. Experimental results show that, as the bamboo fiber content increases, the strength of the bamboo reinforced mortar will decrease. However, the toughness of the specimen will increase as the bamboo fiber content increases. Additionally, Abaqus a finite element software is employed in this study to simulate the mechanical properties of bamboo fiber reinforced cement mortar. According to the finite element simulation, the results showed the mechanical properties of the composite material when the bonding between cement mortar and bamboo fiber is perfectly bonded. Results shown can be used to adjust the method when preparing the specimen of bamboo fiber reinforced cement mortar and improve the mechanical properties.

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