NMR-Approach in the Study of the Influence a Nonionic Sufractant on Water State during Cement Hardening

State of water in the process of cement hardening without or in the presence of nonionic surfactant (pPG) was studied (in comparison with water state in conditions preventing the hardening process and varying the adsorption rate). The general scheme of water distribution in pores of cement in the presence of additives, and its manifestation in the NMR-relaxation processes are described. The values of T rrelaxation times for different components are used to estimate of porous sizes and pores distribution on sizes.