Cement-based composites belong among the basic building materials used in civil\nengineering. Their properties are given not only by their composition but also by their behaviour\nafter mixing, as well as by the methods of curing. Monitoring the processes and phenomena\nduring the early stages of setting is vital for determining the resulting properties and durability.\nThe acoustic emission method is a unique non-destructive method that can detect structural changes\nas a cement-based composite is setting. It can also detect the onset and growth of cracks during the\nservice life of a cement-based composite since the moment it has been mixed. The paper discusses the\nuse of the acoustic emission method with a focus on the early stage of the lifespan of a cement-based\ncomposite including the measures necessary for its use and description of the parameters of acoustic\nemission signals.
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