<p>This article presents the results of a comparative study on the effect of Diss fiber as a substitute for polypropylene fiber used as a reinforcing component in self-compacting sand concrete (SCSC). In fact, Diss fiber mechanical properties (tensile strength and modulus of elasticity) are considerably adequate for such substitution. Natural fibers present numerous advantages such as their naturalness, durability, environmental friendliness, and low energy consumption during processing compared to synthetic fibers. In this study, Diss fiber is used as an analysis material while polypropylene as a reference one. Our results show that both fiber types reduce fluidity and compression strength while increasing bending resistance. The appearance of cracks is slower with Diss fiber than with polypropylene fiber as shown by the microstructure. Diss fibers can ensure optimal results for fresh and hardened SCSC.</p> Graphical abstract <p></p>