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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/34616

    Title: 混凝土添加廢棄橡膠與矽灰之工程性質研究
    Other Titles: Properties of scrap tire rubber-filled concrete containing silica fume
    Authors: 陳佳隆;Chen, Chia-lung
    Contributors: 淡江大學土木工程學系碩士班
    劉明仁;Liu, Ming-jen
    Keywords: 廢輪胎;橡膠;橡膠混凝土;橡胎乳膠混凝土;矽灰;衝擊強度;抗彎強度;waste tires;crumb rubber;rubber included concrete;tire added latex concrete;silica fume;impact strength;flexural strength
    Date: 2008
    Issue Date: 2010-01-11 05:26:13 (UTC+8)
    Abstract: 本研究以不同比例之廢輪胎橡膠塊或橡膠粉末分別取代粗細骨材,並考慮橡膠表面蝕刻處理(surface etching treatment)、添加聚合物摻料、強塑劑及卜作嵐材料等不同材料以製作試體,進行水泥砂漿抗壓強度試驗、水泥砂漿衝擊強度試驗、新拌混凝土性質試驗及硬固混凝土力學性質試驗。
    This study investigated the properties of scrap tire rubber included concrete. Ground rubber (0.6mm~0.075mm in size) and crumb rubber (4.75mm~1.18mm in size) were used to replace portions of fine or coarse aggregate in concrete. Surface etching treatment of rubber, latex admixture, superplasticizer and pozzolan material were also included in the study. Various laboratory tests were performed on mortar, fresh and hardened concrete specimens.
    Rubber replacement rates of 0%, 2% and 4% by weight of total aggregates were used in this study. Latex addition rates of 0%, 5%, and 10% by weight of cement and silica fume replacement rates of 0% and 15% by weight of cement were also arranged. Based on the laboratory test results of this study, major conclusions were summarized as follows:
    1.The silica fume mortar gave the highest 28 days compressive strength; the control mortar gave the second highest compressive strength; while crumb rubber mortar gave the lowest strength. Reducing the particle size of ground rubber was beneficial to the strength increase of rubber included mortar. Increasing the rubber content would significantly decrease the strength of rubber included mortar.
    2.The slump of concrete generally decreased with increasing rubber content. Because of low specific gravity of rubber particles, unit weight of mixtures containing rubber decreased with the increase in the percentage of rubber content.
    3.Concrete containing crumb rubber modified by saturated NaOH solution which replaces a portion of aggregate exhibited higher compressive strength than that of unmodified. Rubber included concrete generally gave lower compressive strength with the increase of rubber content. Test results showed that the silica fume concretes had obvious long-term strength improvement with the contribution of pozzolanic reaction.
    4.Test results indicated that the compressive, flexural and splitting tensile strengths of concrete generally reduced with increase rubber content. However, the use of silica fume considerably enhanced these mechanical properties of ordinary and rubber included concretes, and decreased the rate of strength loss accompanied by the addition of rubber.
    Appears in Collections:[土木工程學系暨研究所] 學位論文

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