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Properties of high performance concrete: the effect of cracks

机译：高性能混凝土的性能：裂缝的影响

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The moisture transport and storage parameters of high performance concrete belong to the most critical parameters in designing and using complex reliability based models for service life prediction of concrete structures. However, mostly it is supposed that the material is compact without any significant cracks, which is not always true. In this paper, the effect of thermally induced cracks on the basic moisture transport and storage properties is analyzed. Experimental results show that the presence of cracks in hardened high performance concrete mixtures dramatically changes all measured hygric parameters. Also, the effects of both microsilica and the size and presence of aggregates on moisture transport and storage parameters are very important. The liquid water transport is found to be affected by cracks, microsilica and aggregates in a much more significant way than water vapour transport.
机译：高性能混凝土的水分运输和储存参数属于基于复杂可靠性的基于复杂可靠性的最关键参数，用于混凝土结构的使用寿命预测。然而，主要是假设材料紧凑，没有任何显着裂缝，这并不总是如此。本文分析了热诱导裂缝对基本水分运输和储存性能的影响。实验结果表明，硬化高性能混凝土混合物中裂缝的存在显着改变了所有测量的湿润参数。此外，微链光学和尺寸和存在对水分运输和储存参数的影响非常重要。发现液体水运输受到比水蒸气转运更显着的方式的裂缝，微菌和聚集体的影响。

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