The dataset CCSC is about carbonation-hardening calcium silicate cement, including indicators related to material properties (collectively serve as “signature/fingerprint”) of binders, aggregates, and admixtures, as well as those related to the mixture proportion, specimen geometry, curing condition, carbonation capacity, and mechanical performance of specimens. It aims to standardize the collection and sharing of relevant high-fidelity data and to stimulate data-driven analysis and machine learning/artificial intelligence modeling.