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Water Penetration of Concrete made with Coarse Aggregates from Demolishing Waste

机译：用粗糙的聚集体制成的混凝土的水渗透来自拆除废物

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The results of laboratory investigations on water penetration in concrete made with coarse aggregates from demolishing waste are presented in this paper. Seven batches of standard size concrete cubes were cast with recycled aggregates from demolished concrete replacing coarse aggregates in percentages from 0% to 60%. The compressive strength of the samples was evaluated by non-destructive testing with the use of the Schimidz hammer. It was found that the strength reduces with an increase in recycled aggregate percentage. The maximum loss of strength due to the induction of recycled aggregates was 32% in the batch with 60%recycled aggregates. All samples were subject to constant water pressure of 5 bars for 72 hours. From the obtained results it was shown that the water penetration depth increases with increase in recycled aggregates rate. With 10% and 20% replacement the samples allowed less water to penetrate than conventional concrete samples, but 76% more penetration depth was recorded in samples with 60% replacement. Strength and water penetration results from dosages up to 20% show that the durability of the produced concrete allows it to be used in structural members with consideration of strength reduction in the design process. However, more water penetration with higher dosages of recycled aggregates needs proper care in design and usage of the concrete particularly for locations where concrete is exposed to water pressure.
机译：本文提出了用粗泥浆制成的混凝土水渗透的实验室研究结果。七批标准尺寸的混凝土立方体被拆除拆除混凝土的再生骨料塑造，取代百分比百分比从0％至60％。通过使用赤米达锤进行非破坏性测试评估样品的抗压强度。发现强度随着再循环的总百分比的增加而减少。由于再循环聚集体的诱导导致的强度的最大损失在批次中为32％，具有60％再循环聚集体。所有样品均受5巴的恒定水压72小时。从所得结果中显示出水渗透深度随着再循环的聚集率的增加而增加。 10％和20％的替代品，样品允许比常规混凝土样品更少的水渗透，但在60％更换的样品中记录了76％的渗透深度。高达20％的剂量的强度和水渗透结果表明，生产的混凝土的耐久性允许其在结构构件中使用设计过程中的强度降低。然而，具有更高剂量的再循环聚集体的更多水渗透需要适当的护理，特别是用于混凝土暴露在水压力的位置的具体的设计和用途。

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