Experimental study on metakaolin and nano alumina based concrete

Abstract

The purpose of the study was to better understand the impacts of adding to freshly produced concrete nanoparticles like nano alumina (NA) at concentrations of 1%, 1.25%, and 2%, as well as the advantageous cementitious (pozzolanic) substance metakaolin at concentrations of 10%, 15%, and 20%. In order to conduct the various tests on freshly formed concrete at intervals of 7 days, 14 days, and 28 days after proper curing, nano alumina and metakaolin were combined. Studies were done on concrete grade M30 to determine its split tensile strength, bending strength, and compression strength. The specimen is put through a non-destructive ultrasonic pulse velocity (UPV) test and a non-destructive rebound hammer test on hardened concrete after 90 days. In order to evaluate the consistency of the concrete specimen, the slump test is also carried out. All test results were compared to the data from normal concrete, and from this we conclude that, when compared to conventional concrete, the percentage of NA powder and metakaolin in modified concrete specimens enhances concrete's properties in both the hardened and fresh stages, including compression strength, bending strength, split tensile strength, and workability.