研究生: |
蔡佐臨 Tso-lin Tsai |
---|---|
論文名稱: |
材料細化對高強度水泥砂漿性質影響之研究 The Study on the Effect of Micro-Fine Materials on the fracture behavior of High Strength Mortar |
指導教授: |
黃兆龍
Chao-lung Hwang |
口試委員: |
陳堯中
Yao-chung Chen 陳立憲 Li-hsien Chen |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 營建工程系 Department of Civil and Construction Engineering |
論文出版年: | 2012 |
畢業學年度: | 100 |
語文別: | 中文 |
論文頁數: | 163 |
中文關鍵詞: | 微細卜作嵐材料 、黃氏富勒緻密配比 、聲射法(AE) 、電子斑紋干涉術(ESPI) 、叢聚 、初裂 |
外文關鍵詞: | micro-fine materials, Hwang-Fuller’s Densified Mixture Design Algorit, acoustic emission (AE), electronic speckle pattern interferometry (ESPI), localization, crack initiation. |
相關次數: | 點閱:272 下載:1 |
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本研究係以黃氏富勒緻密配比法設計,設計出在相同水膠比0.23下,添加不同細化材料之高強度水泥砂漿,試驗利用三分點荷重試驗搭配聲射法(Acoustic Emission, AE)、電子斑紋干涉術(Electronic Speckle Pattern Interferometry, ESPI)、二種非破壞性檢測技術。探討材料細化對高強度水泥砂漿性質影響。
研究結果顯示,在添加細化材料(微奈米水泥、卜作嵐材料、微奈米卜作嵐材料)於高強度水泥砂漿,無論是在新拌,硬固、耐久性質,均有顯著良好的表現,聲光檢測法部分,試體受三分點荷重試驗,其叢聚時機約集中在64~94%,初裂時機約集中在加載比77~99%,二種非破壞性檢測耦合結果 ,發現初裂產生時機幾乎在叢聚之後,結果印證了試體破壞行為是由內而外衍生,並藉由聲光檢測法搭配三分點荷重試驗,能夠得到高強度水泥砂漿之完整加載曲線,以完整了解高強度水泥砂漿破壞演化模式。
This study is mainly to explore the effect of micro-fine materials (cement, fly ash and slag) on the fracture behavior of high strength mortar designed by using Hwang-Fuller’s Densified Mixture Design Algorithm (HFDMDA). The mix design parameters are different particle size materials at fixed w/b ratio of 0.23. Besides traditional loading tests, sophisticate NDT tests such as acoustic emission (AE) and electronic speckle pattern interferometry (ESPI) are applied to monitoring the fracture behavior under three-point bending condition. The results indicate that the addition of micro-fine materials to high strength mortar will improve the fractural performance of mortar both at fresh and hardened stages, and the AE events indicate localization happens at about 64 to 94 percent load level as well as crack initiation at about 77 to 99 percent load level. Coupling AE and ESPI indicates load level after localization has confirmed the failure evolved from the clusters of micro-cracks to the initiation and propagation of macro-cracks. Moreover, by three-point bending tests with nondestructive techniques, complete loading curves and failure history are obsrved.
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