Research Article
Utilization of Fly Ash to Enhance Ground Waste Concrete-Based Geopolymer
Table 2
Variables and conducted tests on WC/FA specimens.
| Specimens | FA (%) | NaOH conc. (M) | SS/N | L/S | Si/Alb | Ca/Sib | Na/Alb | Na/Si | Curing time/days | UCS test | XRD | SEM/EDS | FTIR | MAS-NMR |
| WC | 0 | | | | 3.30 | 0.60 | | | | | √ | | √ | | FA | 100 | | | | 1.90 | 0.12 | | | | | √ | | √ | | 0_10_7a | 0 | 10 | 1.5 | 0.40 | 3.86 | 0.52 | 0.96 | 0.25 | 7 | √ | | | | | 25_10_7 | 25 | 10 | 1.5 | 0.40 | 3.08 | 0.39 | 0.70 | 0.23 | 7 | √ | | | | | 50_10_7 | 50 | 10 | 1.5 | 0.40 | 2.63 | 0.28 | 0.56 | 0.21 | 7 | √ | | | | | 75_10_7 | 75 | 10 | 1.5 | 0.40 | 2.34 | 0.19 | 0.46 | 0.20 | 7 | √ | | | | | 100_10_7 | 100 | 10 | 1.5 | 0.40 | 2.13 | 0.11 | 0.39 | 0.18 | 7 | √ | | | | | 0_14_7 | 0 | 14 | 1.5 | 0.40 | 3.86 | 0.52 | 1.13 | 0.29 | 7 | √ | √ | | | | 25_14_3 | 25 | 14 | 1.5 | 0.40 | 3.08 | 0.39 | 0.83 | 0.27 | 3 | √ | | | | | 25_14_7 | 25 | 14 | 1.5 | 0.40 | 3.08 | 0.39 | 0.83 | 0.27 | 7 | √ | | | | | 25_14_14 | 25 | 14 | 1.5 | 0.40 | 3.08 | 0.39 | 0.83 | 0.27 | 14 | √ | | | | | 25_14_28 | 25 | 14 | 1.5 | 0.40 | 3.08 | 0.39 | 0.83 | 0.27 | 28 | √ | | | | | 50_14_3 | 50 | 14 | 1.5 | 0.40 | 2.63 | 0.28 | 0.66 | 0.25 | 3 | √ | | | | | 50_14_7 | 50 | 14 | 1.5 | 0.40 | 2.63 | 0.28 | 0.66 | 0.25 | 7 | √ | | | | | 50_14_14 | 50 | 14 | 1.5 | 0.40 | 2.63 | 0.28 | 0.66 | 0.25 | 14 | √ | | | | | 50_14_28 | 50 | 14 | 1.5 | 0.40 | 2.63 | 0.28 | 0.66 | 0.25 | 28 | √ | | | | | 75_14_3 | 75 | 14 | 1.5 | 0.40 | 2.34 | 0.19 | 0.54 | 0.23 | 3 | √ | | | | | 75_14_7 | 75 | 14 | 1.5 | 0.40 | 2.34 | 0.19 | 0.54 | 0.23 | 7 | √ | √ | √ | √ | √ | 75_14_14 | 75 | 14 | 1.5 | 0.40 | 2.34 | 0.19 | 0.54 | 0.23 | 14 | √ | | | | | 75_14_28 | 75 | 14 | 1.5 | 0.40 | 2.34 | 0.19 | 0.54 | 0.23 | 28 | √ | | | | | 100_14_7 | 100 | 14 | 1.5 | 0.40 | 2.13 | 0.11 | 0.46 | 0.22 | 7 | √ | √ | | | | 0_18_7 | 0 | 18 | 1.5 | 0.40 | 3.86 | 0.52 | 1.31 | 0.34 | 7 | √ | | | | | 25_18_7 | 25 | 18 | 1.5 | 0.40 | 3.08 | 0.39 | 0.96 | 0.31 | 7 | √ | | | | | 50_18_7 | 50 | 18 | 1.5 | 0.40 | 2.63 | 0.28 | 0.76 | 0.29 | 7 | √ | | | | | 75_18_7 | 75 | 18 | 1.5 | 0.40 | 2.34 | 0.19 | 0.63 | 0.27 | 7 | √ | | | | | 100_18_7 | 100 | 18 | 1.5 | 0.40 | 2.13 | 0.11 | 0.54 | 0.25 | 7 | √ | | | | |
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a0_10_7 means specimen at 0% FA, 10 M NaOH concentration, and 7 days of curing. bSi/Al, Ca/Si, and Na/Al are atom ratios.
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