Influence of Elevated Curing Temperatures on Ultrasonic Pulse Velocity in Portland Cement and Fly Ash Concretes. Journal of Pure & Applied Sciences , [S. l.], v. 25, n. 1, p. 149–157, 2026. DOI: 10.51984/x1j8za28. Disponível em: https://sebhau.edu.ly/journal/jopas/article/view/4566. Acesso em: 14 may. 2026.