Acid-base (AB) cements represent one kind of fast-setting cementitious materials that are formed through the reaction of an acidic liquid component and a basic metal oxide powder at room temperature, which yield a cementitious salt hydrogel and produce a noncoherent precipitate. Coherent bonds can develop between precipitating particles, which will grow into crystalline structures and form a ceramic-like matrix. 1 AB cements have been known for nearly two centuries, and different types of AB cements have been developed, including polyelectrolyte cements (eg, zinc polycarboxylate cement 2), oxysalt cements (eg, magnesium oxychloride cement 3), and phosphate cements (eg, calcium phosphate cement 4). Due to their special performance such as rapid setting, high early strength and low drying shrinkage, they have been widely