A numerical model for predicting the drying shrinkage behavior of concrete under ultra-low relative humidity

• DOI: 10.1016/j.conbuildmat.2023.134459
• Publication Date: 2023-12-12T06:17:04Z
• Authors: Yanchun Miao; Han Wang; Yanjing Zhang; Taotao Feng; Li Yali; Lu Liqun; Junlin Lin; Lu Zeyu; Jinyang Jiang
• Keywords: 0211 other engineering and technologies; 02 engineering and technology

The drying shrinkage caused by rapid water loss will pose a great threat to the safety of concrete structures, especially for those serviced in an extremely dry environment. However, the majority of reported research primarily focuses on drying shrinkage behavior of concrete under relative humidity (RH) ranging from 50% to 100%, and the corresponding drying shrinkage prediction models have poor applicability, leading to an unclear understanding of it under ultra-low RH (RH w/c > coarse aggregate vol% > coarse aggregate range size. We also envision that the proposed model could provide feasible guidelines for the inhibition of concrete in ultra-dry regions.