Issue 75

M. Ramos et alii, Fracture and structural integrity, 75 (2026) 399-434 ; DOI: 10.3221/IGF-ESIS.75.29

Figure 26: Physical Model M-19.

Figure 27: Physical Model M-20.

Through data collection, a consistent pattern was identified in the width of cracks in concrete slabs. Therefore, based on the researchers' assessment, it was deemed appropriate to establish a method for classifying the severity of cracks present in the slabs. Using the observed crack width as a reference, the following classification table was developed to provide a theoretical and visual understanding of the risk range and significance of cracks in concrete slabs. Width (mm) Risk Classification Interpretation 1 Low Width almost visually imperceptible, can be ignored at this stage, but should be addressed in the future to prevent serious damage. 2 Medium-Low Width barely noticeable visually, should not be ignored; it should be addressed in the medium term to prevent serious damage. 3 Medium-High Width clearly noticeable visually, cannot be ignored; it should be resolved in the short term to avoid posing a risk to structural integrity. 4 High Width very clearly noticeable visually, must never be ignored; it should be addressed immediately as it poses a risk to structural integrity at the time of evaluation.

Table 11: Classification of crack severity in physical models of concrete slabs (for this research).

417