@Article{zkg.2025.074609,
AUTHOR = {Aiguo Wang, Yi Zheng, Peng Liu, Jun Zhao, Kaiwei Liu, Yueming Wang, Daosheng Sun},
TITLE = {Effect of air-cooled blast furnace slag aggregates on the autogenous shrinkage of concrete},
JOURNAL = {ZKG International},
VOLUME = {},
YEAR = {},
NUMBER = {},
PAGES = {{pages}},
URL = {http://www.techscience.com/ZKG/online/detail/25602},
ISSN = {},
ABSTRACT = {Autogenous shrinkage is one of the primary factors leading to cracking in concrete structures. To enhance the efficiency of solid waste resource utilization, this study utilizes air-cooled blast furnace slag aggregates (ACBFSAs) to prepare concrete. The impact of different combinations of coarse and fine aggregates (NS-LCR, NS-SCR, SS-LCR, and SS-SCR) on the autogenous shrinkage of concrete is investigated. The experimental results indicate that the shape of the ACBFSAs is more irregular, and the surface of the aggregates is rougher. The 112 d autogenous shrinkage of the NS-LCR group reaches −195.4 μm/m. Replacing natural aggregates with ACBFSAs effectively reduces the autogenous shrinkage of concrete, and the SS-SCR group even exhibits micro expansion (55.8 μm/m). Owing to the internal curing effect induced by ACBFSAs, the concretes obtain higher internal relative humidity and smaller autogenous shrinkage. Its multi-angular characteristics and rough surface greatly increase the bonding strength between aggregate and the matrix. This study can provide technical support for the resource utilization of ACBFSAs in concrete.},
DOI = {10.32604/zkg.2025.074609}
}