Methods of test for smoothing and/or levelling compounds - Determination of dimensional change

This document specifies the test methods for measuring dimensional changes in materials used for floor levelling and smoothing. It establishes a standardized procedure to evaluate how these products respond to environmental variations, particularly concerning moisture and temperature fluctuations. The approach focuses on determining the extent to which the material expands or contracts after being subjected to specific conditioning regimes. By providing a uniform framework for assessment, the standard ensures consistent evaluation of product performance across different laboratories. It covers the preparation of test specimens, the conditioning processes required prior to measurement, and the precise techniques for quantifying linear dimensional changes. This methodology supports the quality control of construction materials by identifying potential issues related to stability and compatibility within floor systems. Adherence to these procedures facilitates reliable comparison of data obtained from various testing facilities and contributes to the overall technical consistency of the flooring industry sector. The content is designed to assist manufacturers, contractors, and testing organizations in verifying that levelling compounds meet necessary performance criteria for dimensional stability.