Accelerated carbonation test data for concretes with varying slag content

This paper presents a dataset of accelerated carbonation test results for 48 concrete mixes with varying binder compositions, water-to-binder ratios, and air-entrainment levels. The dataset includes raw and processed data on material properties, exposure conditions, carbonation depth measurements, and derived carbonation rates. Concrete mixes were prepared using four cement types with different proportions of ground granulated blast-furnace slag (GGBS), ranging from 0% to 72%. Each mix was tested in both air-entrained and non-air-entrained versions. Accelerated carbonation was performed in controlled chambers at approximately 3% CO₂ concentration. Carbonation depth was measured at multiple intervals up to 84 days using phenolphthalein indicator. Additional data cover fresh and hardened concrete properties. The dataset is openly available in Zenodo and can be reused for benchmarking mix designs, validating service-life models, and comparing accelerated and natural carbonation performance.