EFFECT OF GRAPHITE NANOPLATELETS AND FLY ASH CONTENTS ON THE COMPRESSION STRENGTH OF RAPIDSETTING CEMENT

摘要

In this paper the effect of class F fly ash as well as graphite nanoplatelets on the compressivestrength of rapid-setting cement is presented. As reference, paste samples were also included.Samples were manufactured by a manual process and kept for 30 days in a container closed tothe air. Compression tests were conducted in an Instron machine for samples with smooth andparallel surfaces prepared by sand paper. Microstructure with scanning electron microscope,density, and x-ray diffraction results are also included.The compressive strength in all cases was over 30Mpa, and new phases appeared for the fly ashcomposites, depending on the contents. It was found that the best concentration of particles forboth graphite nanoplatelets and fly ash were values of about 0.1 and 1wt%.