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    Title: 養護對活性粉多孔隙混凝土性質影響之研究
    Other Titles: A study on the effect of steam curing regime on properties of RPPC
    Authors: 陳弭塵;Chen, Mi-chen
    Contributors: 淡江大學土木工程學系碩士班
    劉明仁;Liu, Ming-jen
    Keywords: 多孔隙混凝土;活性粉混凝土;活性粉多孔隙混凝土;蒸汽養護;高溫養護;抗壓應力;porous concrete;reactive powder concrete;reactive porous concrete;steam curing;high temperature curing;compressive strength
    Date: 2008
    Issue Date: 2010-01-11 05:23:23 (UTC+8)
    Abstract: 活性粉多孔隙混凝土(RPPC)結合了孔隙性材料與高強度混凝土材料,使其在孔隙性材料績效方面上,具有良好的排水性、吸音性與增加抗滑性。使用蒸汽養護之原因係活性粉多孔隙混凝土添加較多卜作嵐材料,需高溫養治始發揮出提高早強與高耐久性之績效,於是採用高溫蒸汽養護與熱養護相互比較,熱水養護礙於現地應用與施工時間,遂本研究深入探討蒸汽養護應用理論之可行性。

    本研究為了能在現地鋪築多孔隙混凝土,又為了改善強度上之不足,遂使用活性粉,
    混合成為活性粉多孔隙混凝土。在活性粉多孔隙混凝土上需高溫處理始能發揮其強度,於是展開了本研究熱水養護與蒸汽養護對於多孔隙活性粉之研究,研究中添加了矽灰(silica fume)、石英粉(crushed quartz)、強塑劑(superplasticizer)、矽砂(silica sand)和鋼纖維(steel fiber)組成之活性粉砂漿,再搭配三種不同溫度下之試驗,以期達到溫度、養護方式、現地施工所需要的結果與品質。
    1. 由於高溫熱水養護於現地礙難實行,本研究顯示75℃高溫蒸汽養護方法獲得之強度較75℃高溫熱水養護,25℃、50℃卜作嵐效應尚未完全發揮,若現地蒸汽養護工法,發展完成,應可促進活性粉多孔隙混凝土之可行性。
    2. 活性粉多孔隙混凝土之孔隙率由配比、粒料結構控制,礙於抗壓強度受孔隙率之干擾,難以比較其差異性,研究中使用線性迴歸方式,取得方程式斜率,求得修正抗壓強度,將對多孔隙混凝土分析有所幫助。
    3. 活性粉多孔隙混凝土抗壓試驗的結果顯示,透過加入活性粉砂漿與使用高溫75℃蒸汽養護的方法,可以使活性粉多孔隙混凝土28天齡期抗壓強度,達到320 kg/cm2以上,抗彎強度達到45 kg/cm2以上。
    4. 磨耗試驗證實採用活性粉砂漿能提供良好抗磨耗能力。透水試驗結果顯示活性粉多孔隙混凝土具有良好透水能力,滲透係數皆符合日本規範要求(>0.01cm/sec)。活性粉多孔隙混凝土由於有明顯之路面紋理深度,而有助於提供路面良好之抗滑能力。


    關鍵字:多孔隙混凝土、活性粉混凝土、活性粉多孔隙混凝土、蒸汽養護、高溫養護、抗壓應力。
    Reactive powder porous concrete (RPPC) which combines the characteristics of porous concrete and ultra-high strength concrete possess excellent drainage, sound absorption and skid resistance. The addition of silica fume, crushed quartz, superplasticizer and steel fiber helps to improve compressive and flexural strength of RPPC. In this study both hot-water and steam curing, each with 25℃, 50℃ and 75℃ temperature settings, were utilized. RPPC specimens subjected to different curing regimes were evaluated and compared their performance via compressive strength, flexural strength, Cantabro and British Pendulum tests. Major findings based on the results of this study are summarized as follow:
    1. Compressive strength test results showed that both 75℃ steam curing and 75℃ hot-water curing were among the most effective, whereas 50℃ and 25℃ steam curing were not very impressive as expected.
    2. Test results showed that RPPC specimens with 75℃ steam and 75℃ hot-water curing have 28-day compressive strengths greater than 320 kg/cm2, and 28-day flexural strengths greater than the design strength, 45 kg/cm2.
    3. Original compressive strength data analysis was annoyed by the variation of specimens’ air voids. Strength data then were adjusted to a common level according to the strength-air voids relationships. The data adjustment would help to reduce the influence of noise variable (air voids) in data analysis.
    4. Cantabro, permeability and British Pendulum test results showed that RPPC specimens with steam curing had generally good abrasion resistance, drainage (>0.01cm/sec) and skid resistance.
    Appears in Collections:[土木工程學系暨研究所] 學位論文

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