The method based on environmental vibrau00c7u00d5es to quantify the evolution of the module of elasticity of materials in the process of solidificau00c7u00c3o

摘要

The method to measure the evolution of the module of elasticity of materials in the process of solidificau00c7u00c3o, such as cement, resin or similar, using a receptu00c1culo rigidity known, in which it is placed in a sample of the material to be tested.After setting up the whole receptu00c1culo / sample in the condition of structural operation Pro set, the frequency of resonance of the system is monitored over time using methodologies based only on the structural response associated with the environmental excitau00c7u00c3o releasing face, Cterizau00c7u00c3o.The solidificau00c7u00c3o material compound the sample increases the rigidity of the system, by which changes in correspondence to frequency resonance of the same.The analytical formulation of the equau00c7u00c3o to vlbratlon free of structural system receptu00c1culo / sample and their supports for establishing direct correlation between the resonance frequency measurement and the module of elasticity of the material compound in the sample. Underlying the capabilities mentioned, the method described allows the detection of the moment of transition liquid - solid material.Are described concretizau00c7u00d5es best to geometry and material of the receptu00c1culo, conditions for the support of the same and methodology of measurement of resonance frequency.