Geopolymer-Based Smart Adhesives for Infrastructure Health Monitoring: Concept and Feasibility

Characterizing the bond strength of geopolymers at ambient and elevated temperatures

“…Commercially produced metakaolin, supplied by Shanxi Jinkunhengye Co., Ltd., China, through calcining kaolin under 900 o C, was used in preparing test specimens. Geopolymers from pure MK is more susceptible to shrinkage [16,[25][26][27]. To minimize such shrinkage, MK was partially substituted by replacing it with fly ash (FA) of Grade Ⅰ type as per Chinese Code GB/T 1596-2005 [28] specifications.…”

“…Previous studies have indicated that MK-based geopolymers are relatively brittle and prone to crack, especially under high temperature [16,27]. To improve flexibility and minimize cracking, two types of additive materials, namely short fibers and organic polymers, were added to MK/FA precursor.…”

Binders alternative to Portland cement and waste management for sustainable construction—part 1

“…87 Usually, increasing Na 2 O/H 2 O leads to improved dissolution ability and mechanical strength development of clay-based geopolymers. 74,84,88,89 Geopolymers prepared only with MK are highly susceptible to shrinkage both at room and elevated temperatures, 72,90–94 because of their high water requirement.…”

Self-Sensing Alkali-Activated Materials: A Review

“…In the realm of smart materials, AAM were initially used as bonding agents [20] and as encapsulants [21] for conventional sensors. However, as the understanding and the technology of AAM progresses, the need for these additional sensing devices has diminished: interrogation of changes in the electrolytic conductivity of AAM allow them to be directly used as a sensing tool in their own right [22].…”