Table 7 Heavy metal leaching results of raw materials and GBC samples.

From: Study on the synergistic hydration mechanism of granulated blast furnace slag-carbide slag-based cementitious materials and the properties of full-solid waste backfill materials

Elements

Raw material and GBC samples

Standards limits

Unit

CG

FBS

GS

CS

GBC25

GBC30

GBC35

GBC40

GB 8978

Hg

4.7085

3.1050

5.4334

3.8256

2.7674

2.6662

2.8934

2.8373

50

µg/L

Cr

0.0384

0.0194

0.0212

0.0222

0.0243

0.0206

0.0254

0.0275

1.5

mg/L

Pb

0.0116

0.0038

0.0056

0.0055

0.0038

0.0034

0.0041

0.0039

1.0

mg/L

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