New Material Study Case
Case 1: Cemented filling of iron ore with full tailings (2010)
| ash-sand ratio | Mass concentration/% | cementitious material | Uniaxial compressive strength (MPa) | |
| 7 days | 28 days | |||
| 1:4 | 67.5 | ordinary portland cement | 0.86 | - |
| 1:4 | 67.5 | composite portland cement | 0.56 | - |
| 1:4 | 67.5 | JW-I type adhesive powder | 4.66 | 9.94 |
Case 2: Cemented Filling of Iron Ore with Full Tailings (2015)
| Number |
ash-sand ratio |
Mass concentration/% |
cementitious material |
ash-sand ratio |
7-day flexural strength (MPa) |
7 days compressive strength (MPa) |
| WY01 |
1:8 |
54 |
Cement P.C32.5 |
1:8 |
0.000 |
0.000 |
| WY02 |
1:8 |
54 |
JW-I type adhesive powder |
1:8 |
1.400 |
1.475 |
| WY03 |
1:8 |
54 |
JW-I type adhesive powder |
1:8 |
1.875 |
1.813 |
| WY04 |
1:9 |
54 |
JW-I type adhesive powder |
1:9 |
1.625 |
1.638 |
| WY05 |
1:8 |
54 |
JW-I type adhesive powder |
1:8 |
1.569 |
1.951 |
| WY06 |
1:8 |
54 |
JW-I type adhesive powder |
1:8 |
1.569 |
1.541 |
| Note: The test block No. WY01 broke in the middle during the test, and no strength was detected. The flexural strength and compressive strength of 7 days were zero, that is, the test block with cement added failed to solidify. |
||||||
Case 3: Tungsten Mine Full Tailings Cemented Filling (2019)
| Serial Number |
cementitious material |
Concentration (%) |
ash-sand ratio |
Bending strength/MPa |
Compressive strength/MPa |
||
| 3 days |
7 days |
3 days |
7 days |
||||
| 1 |
Glue 1# |
73 |
1:4 |
0.18 |
3.12 |
||
| 2 |
Glue 2# |
73 |
1:4 |
0.20 |
0.46 |
0.90 |
3.61 |
| 3 |
Glue 3# |
73 |
1:4 |
0.19 |
0.46 |
1.05 |
3.89 |
| 4 |
Glue 4# |
73 |
1:4 |
0.23 |
0.47 |
1.20 |
4.03 |
Case 4: Phosphate Mine Full Tailings Cemented Filling (2022)
| ash-sand ratio |
Mass concentration/% |
cementitious material |
Compressive strength/MPa |
|
| 7 days |
28 days |
|||
| 1:8 |
72 |
Cement |
0.544 |
0.888 |
| 1:8 |
72 |
β-Glue Phosphorus Powder |
0.376 |
1.236 |
| 1:8 |
72 |
JW-T adhesive powder |
0.242 |
1.498 |
| 1:10 |
70 |
Cement |
0.544 |
0.760 |
| 1:10 |
70 |
β-Glue Phosphorus Powder |
0.290 |
0.760 |
| 1:10 |
70 |
JW-T adhesive powder |
0.408 |
1.314 |
Case 5:HMS-III soil heavy metal stabilization/solidifying agent
Comparative study of HMS-1 and other commonly used curing agents (lime, phosphate)
Compared with the other two commonly used curing agents, the optimized formula of HMS-1 has the most balanced remediation effect on contaminated soil, and can be used as a soil heavy metal stabilization/curing agent.
Stabilizing/curing agent and contaminated soil according to the mass ratio of 1:4 stirring and mixing evenly, curing to the age of 90 days, soil remediation pH value close to the original soil, effective state cadmium, lead, zinc, reduce the amount of 66.37%, 57.15%, 64.08%.
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