Abstract
Metakaolin-based geopolymers (MKGs) containing different contents of MS expansive agents (EAs) were prepared by alkali activation. Different mechanical testing methods for differently shaped samples were used to evaluate the bond properties of the MKGs. A cement substrate with a circular hole in the middle was used as a permeability test specimen to assess bond by checking the bond appearance and testing the permeability. According to the results of the mechanical properties and penetration tests, the MKG with 4% MS-3 exhibited the best bond properties. The EAs significantly improved the expansion properties and reduced the tensile stress at the interface; these were the main reasons for the improvement in bond properties between the MKG and cement stone. Favourable bond property is an important basis for MKG as an inorganic crack repair material.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
