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來源資料
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題 名 | 混凝土勻質性影響因素的研究=Investigation on the Influence Factors of Homogeneity of Concrete |
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作 者 | 石磊; 水中和; 王桂明; 杜志國; | 書刊名 | 工程科技與教育學刊 |
卷 期 | 7:2 2010.04[民99.04] |
頁 次 | 頁318-324 |
分類號 | 440.327 |
關鍵詞 | 勻質性; 顯微硬度; 界面過渡區; Homogeneity; Micro-hardness; ITZ; |
語 文 | 中文(Chinese) |
中文摘要 | 本文采用离析度和集料分布图像法对混凝土的匀质性进行了綜合評價。試驗結果顯示,离析度、集料离差度与强度差异率存在很好的线性相关性;新拌混凝土在制备过程中引起的微观和宏观泌水作用会在集料界面处产生水分分布梯度,并最终导致硬化后混凝土界面过渡区内结构在不同位置存在明显差异;水灰比的降低、矿物掺合料和外加剂的掺入能有效改善界面过渡区的均匀性。 |
英文摘要 | In this thesis, aggregate segregation degree and image analysis method on the homogeneity of concrete conducted a comprehensive evaluation. The results showed that the degree of segregation and diversity of aggregate had a good linear relationship to compressive strength of different part of concrete; In the preparation process of fresh concrete, the micro-bleeding and macro-bleeding make the water content around the aggregate particles asymmetry, and influent the symmetry of the interfacial transition zone( ITZ) of hard concrete; The decrease of water content, mineral admixtures and superplasticizer can effectively improve the ITZ of concrete. |
本系統中英文摘要資訊取自各篇刊載內容。