CONTROL OF EXPANSION AND STRUCTURE FORMATION OF EXPANSIVE CEMENT

Based on certain statements of various theories on the mechanism of expansion of sulfoaluminate type cements investigations were carried out into the effect of lime on the expansion as well as into the kinetics of ettringite formation, heat evolution, expansion and strength gain of self-straining cement. The results proved the possibility of control the process of expansion and structure formation of expansive sulfoaluminate type cement and concrete on their base. Example of effective utilization of self-straining cement for the technologie of precast concrete manufacturing are shown. © 1990.