STUDY OF THE STRUCTURE AND DYNAMICS RELAXATION PHENOMENA IN COMPLEX DISORDERED SYSTEMS, RESULTING FROM HYDRATION OF THE CEMENT PASTES, USING THE NEUTRON SCATTERING TECHNIQUES

Neutron scattering is a powerful and direct method for investigating the static and dynamic properties of materials manifesting disordered structure. Ordinary Portland cement hydrated with light and heavy water and mixed with specific precipitates used for conditioning of the radioactive waste, was used to be studied by INS. The obtained data allows us to draw conclusions regarding the behavior of H2O and D2O molecules in the structure of the investigated material and the influence of the additives to the general dynamics of the sample. In the following, we discuss the spectra obtained from the data accumulated during the experiments performed at the DIN-2PI spectrometer from JINR Dubna, Russian Federation. We'll show that some of the additives used in large or small quantities influence in a way or another the dynamic structure of the cement paste.