Table 2 Effect of CaO on the mechanical strength of AAMs
Reference | Precursor | Activator | CaO (%) | Type | Curing condition | Age (day) | Effect |
|---|---|---|---|---|---|---|---|
Ju et al., (2020) | Slag | KOH and K2SiO3 | 1–3 | Mortar | -10, 5 and 20 °C | 1, 7 and 28 | -Increased compressive and flexural strengths |
Chen and Ye, (2022) | Slag | sodium carbonate | 2.5 and 5 | Paste | NA | 1–56 | -Increased compressive strength |
[Calcined beet slag, 2022] Gharieb and Rashad, (2022) | Slag | NaOH and sodium silicate | 2.5, 5 and 10 | Paste | Room | 7–90 | -Increased compressive strength |
|  | Slag | NaOH and sodium silicate | 15 | Paste | Room | 7–90 | -Decreased compressive strength |
Rashad and Gharieb, (2021) | FA | NaOH and sodium silicate | 2.5, 5 and 7.5 | Paste | Room | 7–90 | -Increased compressive strength |
Chindaprasirt et al., (2018) | FA | NaOH and sodium silicate | 5, 10 and 15 | Paste | Room | 7 and 28 | -Decreased compressive strength |
Temuujin et al., (2009) | FA | NaOH and sodium silicate | 1, 2 and 3 | Paste | 20 | 7 | -Increased compressive strength |
| Â | FA | NaOH and sodium silicate | 1, 2 and 3 | Paste | 70 for 24Â h | 7 | -Decreased compressive strength |
(Nguyen et al., 2017) | FA | NaOH and sodium silicate | 2–9 | Mortar | 28 ± 2 | 28 and 60 | -Increased compressive strength |
|  | FA | NaOH and sodium silicate | 10 and 15 | Mortar | 28 ± 2 | 28 and 60 | -Decreased compressive strength |
Lee and Deventer, (2002) | FA/kaolinite | KOH and sodium silicate | 0.08764Â mol | Paste | 40 for 24Â h | 7 | -Increased compressive strength |
Matalkah et al., (2020) | Calcined kaolin | Sodium silicate | 5–20% | Paste | Sealed -room | 7 | -Increased compressive strength |
Dişçi and Polat, (2022) | Perlite | NaOH and anhydrous sodium silicate | 1, 2 and 3 | Concrete | 90 °C for 72 h | 3–120 | -Decreased compressive strength -1% increased 90 days flexural strength |