Nanoscale Investigation by Small Angle Neutron Scattering of Modified Portland Cement Compositions

This investigation is based on the results of the experiments on small angle neutron scattering (neutron wavelength is λ=0.3 nm) and goes into patterning trans-atomic-level structure of hydrated portland cement compositions. The following structural parameters are determined: particle size distribution, porosity, fractal dimensionality. The paper stresses the effect of both artificial (γAl2O3, carbon materials) and technogenic (slurry) nanoagents and nanomodifiers on these structural parameters as well as the effect of complex additives with surface-active agents.