Issue 71

Y. Elmenshawy et alii, Fracture and Structural Integrity, 71 (2025) 194-210; DOI: 10.3221/IGF-ESIS.71.14

sustain the larger degree of bacterial multiplication. The behavior of the mixtures treated with sulfate is similar to those treated with water at fresh water. The ideal percentage for each kind of bacteria was 2.5%, resulting in a 23.0% increase in compressive strength for BS (mix M14) and a 48.0% increase for BM (mix M15).

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Figure 4: The impact of the curing type on concrete compressive strength for specimens without pre-cracking:(A) at the age of 7 days, (B) at the age of 28 days, (C) at the age of 56 days, and (D) at the age of 120 days.

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