Fig 1.
XRD spectrum of tailings.
Fig 2.
Particle size distribution of tailings with different grinding time.
Table 1.
Main chemical composition and content in tailings (wt%).
Fig 3.
Device for immersion curing.
Fig 4.
Shaping and preparation of tailings specimen.
Fig 5.
Shaping of specimens with mixed bacteria.
Fig 6.
Division of tailings specimen.
Fig 7.
Relationship between bacterial solution concentration and mechanical properties.
Fig 8.
Relationship between bacterial solution concentration and CaCO3 content in each region.
Fig 9.
SEM image of the tailings specimen for OD600 = 1.6.
Fig 10.
Relationship between cementing solution concentration and mechanical properties.
Fig 11.
Relationship between cementing solution concentration and CaCO3 content in each region.
Fig 12.
SEM image of tailings specimen for cementing solution concentration of 0.25 mol/L.
Fig 13.
Relationship between tailings particle size and mechanical properties.
Fig 14.
Relationship between tailings particle size and CaCO3 content in different regions.
Fig 15.
SEM image of cemented tailings specimen.
Fig 16.
Relationship between curing temperature and mechanical properties.
Fig 17.
Relationship between curing temperature and CaCO3 content in each region.
Fig 18.
SEM image of tailings specimen after cementation at 30°C.
Fig 19.
CaCO3 precipitation in different regions.
Fig 20.
Cementation effect of different mixing modes.