A Surrogate-Based Digital Durability Atlas for Textile-Reinforced Mortar Under Acidic, Alkaline, and Saline Aging

Textile-reinforced mortar (TRM) systems are used to strengthen masonry, but their durability across aggressive environments is rarely evaluated within one consistent framework. This study integrates coordinated acidic, alkaline, and saline aging experiments (0–5000 h) into an audited database containing 577 specimen records, 96 groups, and six mechanical families. Parallel full and master-retained datasets were analyzed to quantify sensitivity to specimen-retention decisions. Of 402 genuine reference-factor comparisons, 44.3% had bootstrap 95% confidence intervals including unity, and 25.9% of 201 paired comparisons showed high sensitivity to dataset version. Baseline-retention trajectories were represented using surrogate models selected by leave-one-time-level-out validation. Of 60 trajectories, 50 supported modeling: 27 selected linear models, 20 quadratic models, and 3 conditionally validated Gaussian processes; 10 pull-out-basalt trajectories remained unresolved because their baseline reference group could not be verified. Variability was highest for pull-out basalt. Although the ranking of acidic, alkaline, and saline conditions remained consistent across the three reference definitions within each mechanical family, it differed between families. The resulting durability atlas provides an uncertainty-aware comparison of TRM responses within the observed domain without implying mechanistic degradation laws, interpolation between environments, or prediction beyond 5000 h.