In-situ X-ray tomographic imaging of microstructure evolution of fly ash and slag particles in alkali-activated fly ash-slag paste

Preparation and application of alkali-activated cementitious materials in solidification/stabilization of chromite ore processing residue

“… 13 Sun et al 2022 (ref. 21 and 23 ) concluded that an appropriate water content was beneficial for the hydrolytic condensation of materials and promoted the formation of a high-density and high-compressive strength solidified body. As depicted in Fig.…”

“…Moreover, an excess amount of OH − can cause Al-Si gel precipitation on FA particle surfaces which further impeded the polycondensation reaction. 23 3.1.4 Curing temperature. In this part, the inuence of different temperatures (D1 = 30 °C, D2 = 45 °C, D3 = 60 °C, and D4 = 75 °C) on the compressive strength of AACM was investigated.…”

“…21,22 Existing studies have demonstrated that utilizing both BFS and FA for AACM production exhibits a synergistic effect, which could improve the mechanical properties and stability. 1,23 The stability and mechanical properties of AACM are inuenced by the dosage and composition of alkaline activating agents. Researchers investigated the impact of various factors on AACM strength.…”

“…21,22 Existing studies have demonstrated that utilizing both BFS and FA for AACM production exhibits a synergistic effect, which could improve the mechanical properties and stability. 1,23…”

New Insight into Energy-Saving Calcination of Limestone: Preparation, Characterization, and Application of Partially Calcined Limestone

“…The reaction rate is gradually slow due to diffusion and moisture transfer limitations. Specifically, the hydration reaction and the nonhydration particles can still be observed. − As shown in Figure , the hydration of cementitious particles goes through several stages and approaches a core–shell structure of an unreacted particle core and a hydration products shell. These particles remain unhydrated throughout the hydration process.…”