本欧洲标准规定了组织材料，组成和混合程序，以生产具有规定稠度和偏析部分的参考混凝土，用于测试EN 934-2中定义的粘度改性混合物。它还描述了如何确定与控制组合相比的测试组合的要求

This European Standard specifies the constituent materials, the composition and the mix procedure to produce a reference concrete with a prescribed consistency and segregated portion for testing viscosity modifying admixtures as defined in EN 934-2. It also describes how to determine the requirements for the test mix in comparison with the control mix.