Data and code for: Acid Degradation of Recycled-Aggregate Concrete from Sub-Saharan Demolition Waste: Dataset, Kinetics and Aggregate Screening Index

Data and code released with the article "Acid Degradation of Recycled-Aggregate Concrete from Sub-Saharan Demolition Waste: Dataset, Kinetics and Aggregate Screening Index" (Recycling, MDPI, 2026; manuscript recycling-4612158). Dataset S1 contains the 30 durability records of three concretes (natural C1, partially recycled C2, fully recycled C3) made with quarry aggregates and aggregates from two demolition-waste sources in Yaoundé, Cameroon, characterized to NF/EN standards. After 90 days of water curing, cylinders were immersed in nominally 5% sulfuric or hydrochloric acid, and residual compressive strength and mass loss were measured on one specimen per mix, acid and age (7, 14, 21, 28 and 90 days of immersion; campaign of 2021). The dataset is given with its data dictionary and the characterization of the aggregates and mixes. Code S1 contains the Python scripts that reproduce the statistics, the monotonic trends, the empirical laws, the anchored TOPSIS screening and all figures of the article. Table S1 compares the results with previous studies.