Research on the Activation and Enhancement Mechanisms of Recycled Concrete Powder in Alkali-Activated Cementitious Materials and Their Carbon Emission Characteristics. - Guo, Yuanxin; Ge, Zhicheng; Zhang, Zhizhu; Wang, Liang; Yan, Jinghua; Li, Qiuyi; Shao, Changhai; Chen, Mingxu (Buildings (2075-5309), 2026)