Development of compressive strength of HPC with the use of supplementary cementing material (SCM) combination

The effect of individual or combined use of silica based and alumino-silicate based supplementary cementing materials on the development of the compressive strength of concretes were studied. Most important aim was to reveal if there is any advantage of the combined use of two supplementary cementing materials. Laboratory tests were carried out on standard cube specimens at the age up to 300 days. Results revealed that the two SCM s could not necessarily contribute to a more effective performance in compressive strength, in the studied mixing ratios.