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Iron and Steel Slag for Road Construction

Iron and Steel Slag for Road Construction Features

Our products meet the standards of iron and steel slag for road construction as defined in JIS A 5015.
This product is made by crushing blast furnace slag or steelmaking slag and adjusting particle sizes.

  1. This industrial product is manufactured under strict quality control to produce consistent quality with minimal variance in composition and particle size.
  2. The hydraulicity of slag helps make roads stronger and more durable.
  3. Good compaction properties give material excellent workability. Traffic can be allowed to flow immediately after construction is finished.
  4. Low sensitivity to moisture content allows rolling operations to be performed even during rain.
  5. The hydraulicity of HMS has a high equivalent conversion factor of 0.55, which makes it possible to reduce roadbed thickness.
Iron and Steel Slag for Road Construction

Iron and Steel Slag for Road Construction

Types and Applications

Type Product No. Application (Reference)
Hydraulic steel slag of modified particle size HMS-25 Base course for road construction
Steel slag of modified particle size MS-25 Base course for road construction
Crusher run slag CS-40
CS-30
Subbase course for road construction

Quality

Property Product No. Comments
HMS-25 MS-25 CS-40 CS-30 CS-20
Leaching test*1 No discoloration Suitable for use as course material for road construction containing air-cooled blast furnace slag
Immersion expansion ratio*2 (%) 1.0 or less*3 Suitable for use as course material for road construction containing steelmaking slag
Unit-volume weight (kg/L) 1.50 or more - - -
Uniaxial compressive strength (MPa) 1.2 or more - - - -

*1 Detection of yellow turbid water from iron and steel slag for road construction containing air-cooled blast furnace slag.
*2 Index used to evaluate expansion of iron and steel slag for road construction containing steelmaking slag.
*3 Standard value per iron and steel slag roadbed design and construction guidelines.

Particle Size

Product No. Particle Size
(mm)
Fractional mass through sieve (%)
Metal-mesh sieve with nominal pores as specified in JIS Z 8801-1
53mm 37.5mm 31.5mm 36.5mm 19mm 13.2mm 4.75mm 2.36mm 425 μm 75 μm
HMS-25 25-0 - - 100 95-100 - 60-80 35-60 25-45 10-25 3-10
MS-25 25-0 - - 100 95-100 - 55-85 30-65 20-50 10-30 2-10
CS-40 40-0 100 95-100 - - 50-80 - 15-40 5-25 - -
CS-30 30-0 - 100 95-100 - 55-85 - 15-45 5-30 - -
CS-20 20-0 - - - 100 95-100 60-90 20-50 10-35 - -

Environmental Safety and Quality

Test Method
JIS A 5015 Annex D
Elution (mg/L)
Standard
Content (mg/kg)
Standard
Cadmium 0.01 or less 150 or less
Lead 0.01 or less 150 or less
Hexavalent chromium 0.05 or less 250 or less
Arsenic 0.01 or less 150 or less
Mercury 0.0005 or less 15 or less
Selenium 0.01 or less 150 or less
Fluorine 0.8 or less 4,000 or less
Boron 1 or less 4,000 or less

Recycled road construction material

Types and Applications

Type Product No. Application (Reference)
Recycled crusher run RC-40 Base course for road construction
Recycled stones of modified particle size RM-40 Subbase course for road construction

Particle Size

Product No. Particle Size(mm) Fractional mass through sieve (%)
Metal-mesh sieve with nominal pores as specified in JIS Z 8801-1
53mm 37.5mm 19mm 4.75mm 2.36mm 425μm 75μm
RC-40 40-0 100 95-100 50-80 15-40 5-25 - -
RM-40 40-0 100 95-100 60-90 30-65 20-50 10-30 2-10

Environmental Safety and Quality

Test Method
JIS A 5015 Annex D
Elution (mg/L)
Standard
Content (mg/kg)
Standard
Cadmium 0.01 or less 150 or less
Lead 0.01 or less 150 or less
Hexavalent chromium 0.05 or less 250 or less
Arsenic 0.01 or less 150 or less
Mercury 0.0005 or less 15 or less
Selenium 0.01 or less 150 or less
Fluorine 0.8 or less 4,000 or less
Boron 1 or less 4,000 or less

Contact

Visit the JFE Steel website to inquire about these products.

JFE Steel Corporation
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