低強度橡膠混凝土動態彈性行為之研究

Research for the Dynamic Behavior of Low Strength Rubber Concrete

10.29679/VJ.201107.0013

蔡仁卓(Ren-Jwo Tsay)；詹榮鑑(Jung-Chien Chen)；黃阮日林(Huynh Nguyen Nhat L-Am)

橡膠混凝土 ； 動態波動 ； 壓力與剪力波速分析法 ； 簡支梁動態反應頻譜分析特徵頻率法 ； Rubber Concrete ； Dynamic Wave Loading ； Material Compression and Shear Wave Velocity Analysis Method ； Simple Support Beam Dynamic Response Spectrum Eigen Frequency Analysis Method

萬能學報

33期（2011 / 07 / 01）

175 - 192

繁體中文

近年來由於節能與綠營建觀念之興起，對於營建過程中如何利用回收材料再應用為廣討論之課題，傳統上對於混凝土材料雖有經濟與可塑性高之優點，但其製造過程中所產生之能源消耗與脆性行為對於構造物吸能效果較差之缺點故須搭配其他材料以提升其耐震消能效果。橡膠材料雖具有高彈性之特質但由於高耗磨性與材料老化與廢棄物後續處理之問題亦為汙染環境之來源。故若能結合上述二種材料特性將回收橡膠添加於混凝土中將可提高混凝土之彈性並降低橡膠廢棄物對於環境污染之影響。本文即希望能結合混凝土之易塑性質與橡膠材料之高彈性行為特性開發可消能之橡膠混凝土，若能廣泛應用於營建工程將可降低廢棄橡膠對環境之污染且提升混凝土材料之吸能抗震效能提升構造物之安全性。本研究分別利用傳統、5%與10%重量橡膠顆粒替代細骨材重量方式，分別以圓柱與方形試體測量試體之抗壓與動態波動反應以量測試體於動態載重下之材料性質。由實驗結果發現混凝土以傳統ACI規範獲得之彈性模數與動態反應下材料彈性模數值偏低，另外利用簡支梁動態反應頻譜分析特徵頻率法比較以材料壓力與剪力波速分析法分析橡膠混凝土受動態波動彈性模數，其中發現以壓力與剪力波速分析法獲得之彈性模數值於10%添加橡膠混凝土有明顯下降趨勢。

The green building development for energy reducing in civil conduction is very popular discussed in recent years. The traditional concrete material is easy to shape in any structure systems but high energy absorbing in manufacture and brittle material behavior are the weak points. How to increase the ductility for traditional concrete by adding other material is very interesting problem for the engineers. Rubber material has very good elasticity material properties but the aging and easy consuming problem will increase the waste disposal work load. We wish to combine two materials by adding rubber particle in traditional concrete to increase the ductility material property and reducing the waste rubber influence to the environment. We build normal and 5% and 10 % rubber particle weight replacement of the sand by cylinder and rectangular samples. Tested the samples compression and shear wave velocity time history to analysis the Eigen frequency and other properties to get the material elasticity modulus. Comparing the test results we found the material elasticity modulus is very different in static ACI code and dynamic loading by material compression and shear wave velocity analysis method and simple support beam dynamic response spectrum Eigen frequency analysis method to find the material dynamic elasticity modulus. By the test results we found the simple support beam dynamic response spectrum Eigen frequency analysis method will get more reasonable result.

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