ABSTRACT
The structural stability, safety, and durability performance of the novel repair materials are decided by their interfacial bond strengths in the deteriorated concrete textures. In this book chapter, the bond strength between the alkali-activated mortars (AAMs) as the repair materials and normal concrete was studied following the standard ASTM C882 slant shear test. Three types of materials including the tile waste ceramic powder (WCP), fly ash (FA), and ground blast furnace slag (GBFS) were combined to produce these AAM binders. The prepared mortar binders were exposed to an acid attack, elevated temperatures, and wet–dry and freeze–thaw cycles to evaluate their bond performance (as repair materials) against such aggressive environments. Various tests were performed to assess the bond strength loss after the exposure to different aggressive environments. The AAM mixes prepared with a high content of WCP and FA revealed superior performance against the acid attack and elevated temperatures compared to the one that contained a high amount of GBFS. Meanwhile, the mortars designed with a high amount of GBFS displayed excellent bond strength performance when exposed to the wet–dry and freeze–thaw cycles. It is established that the proposed AAMs with outstanding bond strength performance and durability under aggressive environments are suitable binders for various civil engineering construction applications.
