The colloid and chemical bases on creation of highly effective multifunctional modifiers were developed on the basis of the experimental data in the field of chemical modifying of concrete compounds and concrete. The article shows that the leading role in concrete chemicalixation now belongs to the components of the given class, because application of these components supplies the concrete compound and the concrete with a complex of specified properties for operation in different conditions. The article notes that this tendency is true while monolithic concreting, as it is most widely applied when carrying out maintenance operations and it places higher quality requirements upon the concrete compounds and the concrete. The study syntesizes a highly efficient multifunctional modifier for monolithic concretes. This modifier posesses a fungicidal effect and contains a plasticizing component, an accelerator of cement hydration processes, concrete hardening. The article also studies the colloid and chemical properties of the obtained modifier and the properties of the concrete compounds and the concrete with its application.

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The findings of the research of colloid and chemical properties of mineral suspensions, based on fine-ground cements and modified with the new polyfunctional modifier, obtained from hydrocarbons production waste, have been presented. It has been demonstrated that the introduction of modifier allows influencing the adsorption processes, electrokinetic potential, rheological parameters, aggregative and sedimentation stability of minerals suspensions, as well as purposefully regulating their properties and considerably cutting the consumption of Portland cement clinker by replacing it with mineral admixtures. The comparative analysis of the obtained modifier with the known analogues has been carried out. On the basis of the carried-out experimental research and the literature data the key points concerning the required properties of modifiers have been formulated. This allows determining their mechanism of action and demonstrates that it is conditioned by the combined action of adsorption-solvation and electrostatic factors. The exclusion of one of these factors results in the loss of the modifier’s activity.