“…Caiyun et al (2019) and Hou et al (2019) discovered that polyurea coatings greatly enhanced concrete samples' tensile and compressive strengths [ 12 , 33 ]. Somarathna et al (2015) and Sustersic et al (2018) discovered that using polyurea coatings significantly decreased the rate of chloride ion penetration, enhancing the durability and service life of concrete structures [ 34 , 35 ]. Using SEM, the impact of polyurea coatings on the performance of concrete structures has been analyzed.…”