Effect of Agents of Initiation of Carbonate Biomineralization on Cement Properties

Abstract

The paper presents the results of the assessment of the effect of bacterial microorganism Sporosarcinapasteurii and CaCl2 and CH4N2O precursors as agents initiating carbonate mineralization processes on the construction and technical properties of binders. In order to achieve this, a preliminary bacterial solution with precursors was prepared, which was introduced into the system instead of mixing water in the range of 0–10% with interval of 2%. The effect of the bacterial solution as a complex additive on the physical and mechanical properties of cement paste and stone is shown: normal density, setting time, water segragation, strength in compression and bending. The introduction of the solution provides a reduction in the setting time of cement without loss of strength both at the initial and at the final stages of hardening.