Effect of aluminum powder and NaOH on the physical and mechanical properties of aerated block with desulfurized gypsum

Properties and Micro-Structure Assessment of Building Materials Based on Flue Gas Desulfurisation Gypsum Modified by Cement and Industrial Waste

“…It is applied widely in construction and building engineering materials nowadays, for example, as a cement-coagulation agent or raw material in the production of cement and concrete to control the hydration rate of cement and improve the early strength, or as a body of cementitious materials after calcined to prepare lightweight gypsum-based building elements [12][13][14]. The latter, appearing in the form of gypsum-based blocks, gypsum particleboards or gypsum plasterboards, is a better way to reuse or recycle, as far as the consumption quantity of FGD gypsum waste [15][16][17]. However, the fact that is not desirable in the FGD building gypsum is the kind of air-hardening of the binding materials which are commonly used indoor because of its low mechanical strength, high solubility and poor resistance to water [18,19].…”