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Table 3 Typical properties of modified, lightly-bound and heavily-bound materials

From: Occurrence of shale soils along the Calabar-Itu highway, Southeastern Nigeria and their implication for the subgrade construction

Material type

Layer thickness (mm)

UCS at 7- days (MPa)

UCS at 28 days (MPa)

Design resilient modulus (MPa)

Modified

Applicable for any thickness

≤1.0

1.3

≤1500

Bound

Lightly -bound

Generally ≤ 250 mm

1–2.0

1.3–3.0

1500–2000

Heavily-bound

Generally > 250 mm

≥2.0

≥3.0

2000–20,000

  1. From AUSTROADS AP R434-13. For slow setting binder the 28 day test results will be less than the values shown but will continue to increase in the field for at least 6–12 months
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