Residual compressive strength of cement-based grouting material with early ages after fire

In this paper a comprehensive experimental investigation on the residual compressive strength of cement-based grouting materials after exposed to high temperature is presented. The research focused on the influences of different temperatures, curing ages before and after heating and water mixing ratios on the residual compressive strength of the material. The research indicates that the residual compressive strength of cement-based grouting material reduces significantly after heating. The reduction of the residual compressive strength of the material increases with increasing water mixing ratio. For the specimens exposed to higher temperature, such as 550 °C, the residual compressive strength cannot recover after heating. The research generated a set of reliable and valuable test data for the researches and practical structural engineers in the field of structural fire engineering.