Repair of ordinary Portland cement concrete using alkali activated slag/fly ash: Freeze-thaw resistance and pore size evolution of adhesive interface

• Published in: Construction & building materials Vol. 300; p. 124334
• Main Authors: Fan, Jingchong, Zhang, Bo
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 20.09.2021
• Subjects: Adhesive interface; Alkali activation; Freeze–thaw cycle; Microstructure; New-to-old concrete; Freeze–thaw cycle; Adhesive interface; Microstructure; New-to-old concrete; Alkali activation

•The freeze–thaw resistance of adhesive interface can be enhanced by repairing with alkali activated slag/fly ash.•The addition of fly ash can effectively reduce harmful pores in the adhesive interface.•Excessive slag content inhibits the development of C-S-H, C-A-S-H, and N-A-S-H crystals. Adhesive...