Mechanism for improving the strength of a cement material modified by SiO₂ nanoparticles and multiwall carbon nanotubes

The authors have given results of investigations into the phase transformations of a cement material modified by a complex nanodisperse admixture that consists of a super plasticizer and nanoparticles (nano silica sol and a carbon nanomaterial) by the method of thermogravimetric analysis; the method makes it possible to obtain quantitative information on the change in the mass of a specimen as a result of its heating. Thermogravimetry data have been compared with the results of ultrasound investigation and nanoindentation. (authors)