Evaluation of Impact Strength of Heated Slag Geopolymer Concrete

In this study, 6 mixing designs including 1 design of control concrete containing Portland cement, 3 designs of geopolymer concrete containing 0 to 8% nanosilica and 2 designs of slag geopolymer concrete containing nanosilica and 1 and 2% of polyolefin fibers were made (Mansourghanaei et. al., 2022; Mansourghanaei et. al., 2022; Mansourghanaei et al., 2022). In line with the prepared mixing plan, 54 concrete specimens were made for impact test (each test averaged the results of 3 concrete specimens) and 24 concrete specimens were made for compressive strength test (each test averaged the results of 4 concrete specimens) which at the age of 90 Fasts were tested and evaluated. It should be noted that for SEM and XRD tests, shredded tests were used. Concrete compressive strength test was performed at room temperature and impact weight test at room temperature and temperature of 300 and 600℃. In the drop weight test, parameters such as impact energy due to initial cracking and failure, adsorbed energy and flexibility index of concrete samples were calculated and evaluated. In order to study the microstructure and verification of the results of hammer impact test, XRD and SEM tests were used on concrete samples.