The assessment of the integrity of the structure of the concrete mass under the influence of temperature loads was carried out. The purpose of this work is to analyse the change in the amplitude of signals propagating from two entry points into the structure and recorded by AE sensors located in different areas of the structure. The signals are clustered using the Pearson correlation coefficient. An algorithm for the formation of super-signals for each cluster is proposed. Clusters and super-signals are presented at a value exceeding the 0.9 threshold. Based on the super-signals, the state of the concrete mass in time is estimated and the compliance of the actual flow of the experiment is checked. It was possible to establish that the proposed method of analysis leads to a correct assessment of the state of the object.