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Nonlinear Elastic Wave Spectroscopy with MLS Perturbation Signal
(Výzkumný ústav stavebních hmot,a.s., 2016-05-31)
The article describes a test procedure based on the fundamental principle of Nonlinear Elastic Wave Spectroscopy. Without integration of all test stages into one automated measurement station and without Maximum Length ...
Carbon admixtures influence on the electrical properties of slag mortars focusing on alternating conductivity and permittivity
New materials based on alkali-activated slag mortars may be an important contribution of applied research, which strives to offer the use of waste materials as a full replacement for the currently used binders and explores ...
Comparison of results of impedance spectroscopy methods with results of impact-echo method in investigation of high-temperaturedegraded concrete
The growth in the transport industry results in more accidents, which often include fire in locations with the concrete structures, which also effects its lifetime and its functionality. After any case of fire loading it ...
Electric conductivity changes in geopolymer samples with added carbon nanotubes
By incorporation of nanotubes to the current composite materials, their properties can be significantly improved. Carbon nanotubes can act as filler, which minimizes the air gaps content in the matrix. The denser structure ...
Monitoring of concrete hydration by electrical measurement methods
Analysis of impedance spectra of inhomogeneous materials is a part of the impedance spectroscopy which is still waiting for its development. Materials having higher electric resistance values (over 500 kohm) can be considered ...