Adezivi. Testing methods for hydraulic-set finishing and/or levelling mortars. Determination of flow characteristics

This document specifies the procedures for determining the flow characteristics of mortars used for internal and external wall plastering. The scope covers both air-hardening and hydraulic-setting mortars, including those designed for leveling surfaces. The method outlined herein provides a systematic approach to assess the fluidity and spreadability of fresh mortar mixtures, which are critical factors in ensuring proper application and final finish quality. Testing involves preparing a mortar sample according to defined mixing ratios and utilizing a standardized apparatus to measure the flow cone parameters or flow table spread. The results obtained from this procedure allow producers and applicators to verify compliance with specified performance requirements regarding workability. This test method is intended to be applied in laboratory environments where controlled conditions can be maintained to ensure reproducibility of data. It serves as a technical reference for evaluating the rheological properties of cementitious binders and aggregates before their use in construction projects. The methodology focuses on obtaining consistent and comparable measurements across different batches and formulations.