Abstract. The paper studies theoretical aspects of methods for electrochemical, electromagnetic, magnetic activation of water as a confining liquid for cement systems. The ideas about processes of water structural organization are shown to be the basis for one of possible mechanisms of activating impact. Experimental data for electric conductivity, electric capacity on the example of distilled water treatment by means of magnetic field which confirm the change of water structure have been presented.

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Abstract. The experimental results of physical-chemical properties of composite materials on the basis of cement and wood waste modified by an aquatic solution of oxalic aldehyde are presented in this paper. The injection of a chemical addition agent being in optimal concentration is shown to result in the increase of compressive strength of a cement stone by 30%, that of wood-cement composition -in 7 times. IR spectroscopy investigations, microphotographs of structures, kinetics of samples strength changes are shown.