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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