Abstract
The processes occurring during hardening of special cement pastes for the construction of storage facilities or disposal of radioactive waste containing aluminum metal were studied by means of a neutron radiography method. High reactivity of aluminum causes rapid release of hydrogen-containing components from the entire volume of cement paste. The cement pastes with organic additives to suppress the process of hydrogen-contained gases formation during the hardening of the cement materials were studied. Time dependences of the neutron attenuation coefficients for these special cement materials were obtained. Based on the neutron radiography data, the kinetics of hardening of those special cement pastes is discussed.
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