The Dynamic Response of the Vibrating System in the Case of the Maxwell Rheological Model

The Maxwell rheological behavior of materials with a high content of fluid fraction with very fine particles in the mixture leads to the predominant character of the viscous component in series connection with the elastic component. For this, laboratory tests were carried out on small-scale samples subjected to a variable-frequency vibrating regime with monotonically increasing command. Thus, from the amplitude-frequency characteristic, results that from the construction of a family of curves, the largest amplitude corresponds to the material with the largest viscous damping, in contrast to the Voigt-Kelvin rheological model. Materials in this category are used in constructions with commissioning through appropriate technological vibrations. In this case, the materials can be listed: lightweight concretes with additives and setting accelerators, bitumens, sandy soils and dusty clays, paints and mastics for road works etc. Research carried out within the Research Institute for Construction Equipment and Technologies ICECON Bucharest, Romania, have highlighted the fact that certain categories of materials have Maxwell rheological behavior such as: soils in filling for road works, asphalt finishing mixtures, composite mastics for filling expansion joints, foundation soils with a high composition of sand and fine clay for bridge piles etc.