Testing methods for finish or levelling screeds with hydraulic bonding. Preparation of mixtures

This standard establishes a unified procedural framework for preparing test mixes used to evaluate hydraulic connections for facing and/or leveling materials. The document specifies precise methodologies for mixing raw components to ensure consistency and reliability during performance assessment. By defining the exact proportions, mixing sequences, and environmental conditions required during the preparation phase, the text aims to minimize variability between different testing laboratories and facilities.

The scope covers the necessary steps to produce representative samples that accurately reflect the behavior of the finished construction materials under specific hydraulic conditions. It addresses the technical requirements for handling aggregates, binders, and additives to achieve a homogeneous mixture suitable for subsequent mechanical and durability testing. This approach facilitates the comparison of material properties across diverse regional applications by eliminating procedural inconsistencies in the initial sample creation stage.

Adherence to these guidelines ensures that all testing bodies utilize identical preparation techniques, thereby supporting accurate data interpretation regarding the suitability of various binding systems. The procedures detailed herein serve as a foundational reference for quality control and technical evaluation without dictating the acceptance criteria for the final products themselves.