Optimization of gas-solid carbonation conditions of recycled aggregates using a linear weighted sum method

Optimization of pretreatment and various gas-solid interaction conditions is necessary for effective carbonation recycled coarse aggregates derived from concrete wastes (RCA). This study demonstrated the use linear weighted sum method to simultaneously optimize test conditions. The optimization produced simplified, eco-friendly pretreatments drastically reduced duration RCA 72 h 3 weeks in previous studies 18 this study. In addition, optimum experimental were validated by casting using carbonated RCAs. optimized spraying Ca2+-rich wastewater at a level 60% 24 water absorption RCA, 12 air drying 6 60 °C. also that ready-mix batching plants can be utilized RCAs improve efficiency. Also, mechanical durability properties prepared with conventional pressurized similar. Therefore, as an alternative carbonation. improved attributed physical microhardness interfacial transition zone new mortar. faster, ecofriendly, opens vista industrial applications interactions.