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.