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Effect of environmental conditions on expansion in concrete due to alkali-silica reaction (ASR)

机译:环境条件对碱硅反应(ASR)对混凝土膨胀的影响

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The environmental conditions to which a concrete element incorporating alkali-silica reactive aggregates is exposed play a major role in dictating the progression and manifestation of the reaction. This paper reports and analyses the results of research programs investigating the comparative evaluation of the effect of environmental conditions on the development of alkali-silica reaction (ASR) in concrete specimens stored in outdoor exposure at the authors' respective laboratories. This data is compared to samples subjected to laboratory testing (controlled environmental conditions). Concrete mixtures that incorporate reactive aggregates with varying reactivity levels are compared. The focus of this paper is on control concretes e.g. 100 percent ope+reactive aggregate (coarse or fine).
机译:掺入碱-硅反应性聚集体的混凝土元素所处的环境条件在决定反应的进行和表现方面起着重要作用。本文报告并分析了研究计划的结果,这些研究计划旨在调查环境条件对在户外实验室存放的混凝土标本中碱-硅反应(ASR)发展的影响的比较评估,这些标本来自作者各自的实验室。将该数据与经过实验室测试(受控环境条件)的样品进行比较。比较了掺入具有不同反应性水平的反应性骨料的混凝土混合物。本文的重点是控制混凝土,例如100%ope +反应性骨料(粗或细)。

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