Table 1 Influencing factors of carbonation rate reported in the literature
From: Machine learning for efficient CO2 sequestration in cementitious materials: a data-driven method
Ref. | Data scale | Influence factors | Basic conclusions |
|---|---|---|---|
16 groups | RH, Cement Type | RH has a positive effect at low values and reaches a peak in the range of 60% to 70%. The type of cement significantly affects carbonation; specifically, the use of silica fume decreases the carbonation depth. | |
9 groups | CO2 | Elevated CO2 concentrations result in increased consumption of calcium silicate hydrate (C-S-H) and clinker. | |
4 groups | Carbonation type | Accelerated testing alters the ranking of cement types based on their influence. | |
13 groups | CO2, RH | A high concentration of CO2 and moderate RH (around 50%) are essential factors for enhancing the degree of carbonation. | |
14 groups | Temperature | The rate of carbonation was significantly influenced by temperature, with the optimal carbonation occurring at approximately 100 °C. | |
16 groups | Water/cement ratio | Water/cement ratio is the most important influence factor. | |
9 groups | Water/cement ratio, time | Carbonation depth increases with water/cement ratio and the age of concrete. |
