Dataset of UHPC compressive and flexural strengths

This dataset is ultra-high performance concrete (UHPC) compressive and flexural strengths data. The compressive strength dataset contains 664 samples with 13 input features, including cement, silica fume, fly ash, slag, nano-SiO₂, limestone, quartz powder, water, fine aggregate, water-reducing agent, fiber content, curing temperature and curing time, and the target variable compressive strength (in MPa). The flexural strength dataset includes 333 samples with 15 input features. Input features encompass cement, silica fume, fly ash, slag, nano-SiO₂, limestone, quartz powder, water, aggregate, water-reducing agent, fiber content, curing method (e.g., steam, ambient), specimen length (critical for flexural testing), and the target variable flexural strength (in MPa).