Study on the Fundamental Properties and the Effect of Temperature on Strength Development of High-strength Concrete without Portland Cement

As one of the efforts to reduce CO2 emissions, concrete containing high-volume mineral admixtures is being studied, and the authors are also developing high-strength concrete without Portland cement. This paper reports on the results of the study on fundamental properties and the effect of temperature on strength development of high-strength concrete without Portland cement. As a result, the following were obtained; 1) The influence of powder and curing method on the relationship between compressive strength and Young’s modulus is small, and the influence of aggregate used is dominant, as in the case of ordinary concrete. 2) The use of ground granulated blast-furnace slag, with Blaine 6000, increases the development of compressive strength and also facilitates freeze-thaw resistance. 3) The compressive strength development of high-strength concrete without Portland cement is more temperature-dependent than that of ordinary concrete, and the apparent activation energy must be increased when evaluated at the effective age of the concrete.