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首页> 美国卫生研究院文献>Materials >Estimation of Recycled Concrete Aggregate’s Water Permeability Coefficient as Earth Construction Material with the Application of an Analytical Method
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Estimation of Recycled Concrete Aggregate’s Water Permeability Coefficient as Earth Construction Material with the Application of an Analytical Method

机译：解析法估算再生土骨料作为土建材料的透水系数

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摘要

Creating models based on empirical data and their statistical measurements have been used for a long time in the economic sciences. Increasingly, these methods are used in the technical sciences, such as construction and geotechnical engineering. This allows for reducing the costs of geotechnical research at the design stage. This article presents the research carried out on Recycled Concrete Aggregate (RCA) material with is reclaimed crushed concrete rubble. Permeability tests were carried out using the constant head method. Tests were conducted on blends of RCA with the following particle size ranges: 0.02–16 mm, 0.05–16 mm, 0.1–16 mm, and 0.2–16 mm. The gradients used during the tests were between 0.2 to 0.83, which corresponds to gradients encountered in earth construction and are below the critical gradient. Directly from the tests, the flux velocity for the range of tested gradients were calculated based on filtered water volume measurements. The values of the permeability coefficient (k) were then recalculated. Finally, statistical methods were used to determine which physical parameters of the tested material affect the permeability coefficient. The physical parameters selected from the statistical analysis were used to create a model describing the phenomenon. The model can be used to determine the permeability coefficient for a mixed RCA material. The article ends with conclusions and proposals concerning the use of models and the limits of their applicability.
机译：基于经验数据及其统计度量创建模型已在经济科学领域使用了很长时间。这些方法越来越多地用于技术科学中，例如建筑和岩土工程。这样可以减少设计阶段的岩土研究成本。本文介绍了对再生的碎混凝土碎石的再生混凝土骨料（RCA）材料进行的研究。使用恒定压头法进行渗透性测试。对具有以下粒径范围的RCA混合物进行了测试：0.02–16 mm，0.05–16 mm，0.1–16 mm和0.2–16 mm。测试期间使用的坡度在0.2到0.83之间，这对应于土方施工中遇到的坡度，并且低于临界坡度。直接从测试中，根据过滤后的水量测量结果，计算出测试梯度范围内的通量速度。然后重新计算渗透系数（k）的值。最后，使用统计方法确定测试材料的哪些物理参数会影响渗透系数。从统计分析中选择的物理参数用于创建描述现象的模型。该模型可用于确定混合RCA材料的渗透系数。本文以关于模型的使用及其适用范围的结论和建议作为结尾。

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