METHOD OF PREPARING CONCRETE MIXTURE Russian patent published in 2013 - IPC C04B28/00 C04B40/00 C04B111/20 

FIELD: chemistry.

SUBSTANCE: invention relates to the industry of construction materials and specifically to methods of preparing a concrete mixture. The method of preparing a concrete mixture involves measured feeding into a concrete mixture of cement, aggregate and hardening liquid, followed by agitation of said mixture. The disclosed method is characterised by that before feeding cement into the concrete mixture, the cement particles are charged with a positive or negative electrostatic charge by passing them through a mesh electrode across which a high negative or positive potential is applied, the magnitude of which lies in the (8-10) kV range. The hardening liquid used is activated water, wherein if the cement particles are charged with a negative electrostatic charge, the activated hardening liquid is an anolyte having redox potential (Eh)_an in the range of [250≤(Eh)_an≤1200] mV, and if the cement particles are charged with a positive electrostatic charge, the activated hardening liquid used is a catholyte having redox potential (Eh)_cat in the range of [-820≤(Eh)_cat≤300] mV.

EFFECT: more efficient use of cement and high strength of the hardened cement, as well as faster setting of the cement.

2 tbl, 1 dwg