<p>Enhancing the durability of concrete serves as an approach to mitigate the environmental impacts of concrete consumption in structures and infrastructure and reduces the need for repairs or reconstruction. Using latex in concrete, with its positive effects on reducing permeability, can help achieve this goal, though it presents certain challenges. This research investigates the effect of adding styrene-acrylic (SA) latex and slag pozzolan on the mechanical properties and permeability of concrete under two different curing conditions. The results indicate an increase in tensile strength (23.8–39.3% increase in combined curing), and abrasion resistance (Mass loss reduction up to 17.4%) and a reduction in permeability with the addition of SA latex. However, the compressive strength of these samples decreased. By replacing slag as part of the cement, compressive, tensile strength, and abrasion resistance improved, and the water penetration depth decreased. So that, the compressive strength after adding slag increased from 29.3&#xa0;MPa to 39&#xa0;MPa (in combined curing-28 days). While control and slag-containing samples performed better under wet curing conditions, latex-modified samples achieved better results under combined curing conditions. Distance-based approach considering four criteria with equal importance indicated better performance of samples containing 10% slag. When the durability criterion is considered, for a weight of less than 40% in the durability criterion, slag-containing concrete shows suitable performance, with an increase in the durability weight to more than 40%, latex-modified concrete exhibited the best performance.</p>