Strength optimization and key factors correlation of one-part fly ash/ladle furnace slag (FA/LFS) geopolymer using statistical approach

Synthesis and properties of alkali‐activated iron ore tailings blended with metakaolin

“…This displacement toward low wave numbers is used by several authors as an indication of the formation of an alkali-activated network-attributed to the sodium aluminosilicate gel formed. [44][45][46][47][48] As previously observed, this shift was due to the yield of alkali-activated network when more Al 3+ ions were included into the SiO 4 tetrahedral framework. 46,49 When both IOT and MK were activated together, an equal displacement toward wavenumbers 1000 cm −1 was observed.…”

“…[44][45][46][47][48] As previously observed, this shift was due to the yield of alkali-activated network when more Al 3+ ions were included into the SiO 4 tetrahedral framework. 46,49 When both IOT and MK were activated together, an equal displacement toward wavenumbers 1000 cm −1 was observed. These equal absorption bands recorded on BIOT and BIOT+MK 30 specimens suggest no sensible differences in the alkali-activated network.…”

“…It is noticed that the band appearing at 1083 cm −1 for IOT shifted to 1000 cm −1 , after alkali‐activation. This displacement toward low wave numbers is used by several authors as an indication of the formation of an alkali‐activated network—attributed to the sodium aluminosilicate gel formed 44‐48 . As previously observed, this shift was due to the yield of alkali‐activated network when more Al 3+ ions were included into the SiO 4 tetrahedral framework 46,49 .…”

Ladle Furnace Slag: Synthesis, Properties, and Applications

“…The use of LF slag alone [60], activated LF slag, and the inclusion of additives like fly ash [129][130][131][132][133][134][135][136][137][138][139][140], fibers [141][142][143], and metakaolin [59,144] has been studied for forming geopolymers. The most critical factor in developing geopolymers is the hydration of binders, cement, slag, or fly ash to activate calcium aluminum silicate minerals using an alkali activator.…”

“…Yong et al [136] studied the cause-and-effect relationship between mixing ratio and optimal properties using a statistical approach in fly ash/LF slag-based geopolymer. The optimum ratios found by the team using a statistical method were 0.25, 5.0, and 0.20 for water-to-binder, sodium metasilicate-to- sodium hydroxide, and alkali activator-to-aluminosilicate sources, respectively.…”