本研究係在傳統抗壓試驗過程中，加入非破壞之聲射技術(AE)，三維追蹤水泥矽灰材料內部之破裂微震裂源，藉以判斷實際破壞行為及其演化；並輔以電子點紋干涉技術(ESPI)觀察其表面二維變形之微破壞特徵及巨觀之破裂形式，其目的在探討黃氏富勒緻密配比(HFDMDA)之水泥矽灰材料於應力下產生之內部破壞機理，以理解矽灰添加對於破壞產生之影響以及不同配比設計方式產生之差異性。研究結果顯示，混凝土材料中添加矽灰可以提高材料強度，其中以20~25%取代量有最佳之強度表現，而矽灰量越多產生之缺陷使AE訊號量相對越少，且添加過量反而會產生快速破壞之現象。使材料之叢聚與初裂延後發生，峰後產生回彈而造成不穩定。故配比設計時可藉由緻密堆積之方式找出矽灰最佳之使用量，使材料組成堆積緻密，增加材料之鍵結，俾減少矽灰的劣化因子，提升矽灰水泥材料之強度及耐久性。

Addition to the conventional compressive testing, the acoustic emission techniques is used to 3-D trace the micro-crack sources in the silica fume cement material to evaluate the actual crack behavior and propogation. Electronic speckle pattern interferometry (ESPI) technology is also used to inspect 2-D crack from the surface of the same specimen. The objective of such study is to explore the internal micro-crack behavior of silica fume cement material designed by Hwang Fuller’s mixture design algorithm(HFDMDA) and to learn the effect of addition of silica fume on the behavior of the cement material and the method of mixture design. The results indicate that the addition of silica fume to cement material will improve the compressive strength, and 20 to 25% silica fume addition reach the optimun strength. The more the addition of silica fume, the more the amount of AE signal. Suitable amount of silica fume addition may produce stable rate of AE signals, but excessive amount of silica fume adddition leads to rapid destruction. The addition will also delay the possibility of localization and crack initiation, and post peak snap-back appears to make the materials unstable. Designed by DMDA, the silica fume concrete material will be denser, better inter-particle bonding force, less degradation, and better the strength and durability than normal concrete.

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