The Clinker Minerals Effect on the Cement Hardening Kinetic Constants

Abstract

The work is devoted to the study of the relationship between the individual clinker minerals content, the stone compressive strength in different periods of hardening and the binders kinetic hardening constants. It is shown that C3S and C2S affect the cements’ kinetic hardening constants in the early and long-term periods in different ways. There is a positive effect of C2S on the ultimate compressive strength and a sharp decrease in the dependence of the stone ultimate strength on C3S in the later periods. The initial hardening rate in high-cement cement is established to increase sharply with an increase in the C3A content from 5 to 12%. The increase in the C3A content up to 12% in low-cement cement has little effect on the initial hardening rate value.

The Effect of Volumetric Hydrophobization on Moisture Transfer during Hardening of Concrete

“…The start time of setting depends on the ambient temperature [1]. At a temperature of 20 ° C, the setting begins about 1 hour after pouring the concrete mixture into the mold, when the temperature drops to 0 ° C, the beginning of setting of the cement begins after 6-8 hours [2][3][4]. At high temperatures, when concrete is steaming, setting sets in 15-20 minutes [5].…”