The aim of this research is to provide a quantitative method for evaluating concrete segregation. Because of various conditions of concrete materials, mix proportions, and delivery, concrete can be segregated. The acquisition inspection executed in construction field for supplied ready-mixed concrete is an important quality control process for concrete. Among the inspections conducted at the project site, segregation of concrete mixture should be evaluated before placing the concrete mixture, currently a qualitative inspection on concrete segregation was conducted. For a normal concrete mixture with slumping behavior, shear slump or collapse slump often occur as an indication of segregation. The suggested evaluation index of segregation for normal concrete (EISN) was induced from the shape of the concrete slumping: relation between the maximum distance of flow and the minimum distance of flow. To evaluate the feasibility of EISN, two different concrete mixture conditions were tested. The recommended EISN parameter of segregation is 1.09 using the three grades of concrete quality. This new quantitative method of evaluating segregation of the concrete mixture is expected to contribute to a more efficient quality control in concrete construction.

这项研究的目的是提供一种评估混凝土偏析的定量方法。由于混凝土材料，混合比和输送的各种条件，混凝土可以被隔离。在施工现场对供应的预拌混凝土进行购置检查是混凝土的重要质量控制过程。在项目现场进行的检查中，应在放置混凝土混合物之前评估混凝土混合物的偏析，目前已对混凝土偏析进行了定性检查。对于具有塌陷行为的普通混凝土混合物，通常会发生剪切坍落度或坍塌坍落度，这是偏析的迹象。根据混凝土坍落度的形状，得出了建议的普通混凝土偏析评估指数：最大流动距离与最小流动距离之间的关系。为了评估EISN的可行性，测试了两种不同的混凝土搅拌条件。使用三个等级的混凝土质量，推荐的EISN隔离参数为1.09。这种评估混凝土混合物偏析的新定量方法有望有助于混凝土施工中更有效的质量控制。