Table 5 Summary of X-ray diffraction results show the existence of sulfate phases and achieved from the powder prepared from the surface and the middle of the samples immersed in sulfate solution.
Mix | Water to binder ratio (W/B) | Curing condition and temperature | Position of sampling | Sulfate phases | Mineral name of sulfate phases |
|---|---|---|---|---|---|
ATAF1 | 0.45 | Sealed curing at 20 °C | Surface | Na3Al(SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
ATAF1 | 0.45 | Sealed curing at 20 °C | Middle | Na3Al(SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
ATAF1 | 0.45 | Fog curing at 40 °C | Surface | Na3Al(SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
(MgAl)5(SiAl)8O20(OH)2·8H2O | Palyigorskite | ||||
K2Mg(SO4)2·4H2O | Leonite | ||||
ATAF1 | 0.45 | Fog curing at 40 °C | Middle | Na3Al(SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
ATAF1 | 0.45 | Sealed curing at 40 °C | Surface | Na3Al(SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
(MgAl)5(SiAl)8O20(OH)2·8H2O | Palyigorskite | ||||
K2Mg(SO4)2·4H2O | Leonite | ||||
ATAF1 | 0.45 | Sealed curing at 40 °C | Middle | Na3Al(SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
ATAF1 | 0.45 | Sealed curing at 60 °C | Surface | Na3Al(SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
ATAF1 | 0.45 | Sealed curing at 60 °C | Middle | Na3Al SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
ATAF2 | 0.55 | Fog curing at 40 °C | Surface | Na3Al(SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
K2Mg(SO4)2·6H2O | Picromerite | ||||
ATAF2 | 0.55 | Fog curing at 40 °C | Middle | Na3Al(SO4) | Sodium |
K2Mg2(SO4)3 | Langbeinite | ||||
K2Mg(SO4)2·6H2O | Picromerite | ||||
ATAF2 | 0.55 | Sealed curing at 40 °C | Surface | Na3Al(SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
ATAF2 | 0.55 | Sealed curing at 40 °C | Middle | Na3Al(SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
ATAF2 | 0.55 | Sealed curing at 60 °C | Surface | Na3Al(SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
ATAF2 | 0.55 | Sealed curing at 60 °C | Middle | Na3Al(SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
ACSH | 0.42 | Sealed curing at 20 °C | Surface | Na3Al(SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
ACSH | 0.42 | Sealed curing at 20 °C | Middle | Na3Al(SO4)3 | Sodium aluminium sulfate |
ARSH | 0.42 | Sealed curing at 60 °C | Surface | Na3Al(SO4)3 | Sodium aluminium sulfate |
K2Mg2(SO4)3 | Langbeinite | ||||
ARSH | 0.42 | Sealed curing at 60 °C | Middle | Na3Al(SO4)3 | Sodium aluminium sulfate |