Highway & Bituminous Testing

Ductility Testing Machine

Digital ductility testing machine measuring the elongation of bitumen before breaking, per IS 1208.

NABL TC-14144· ISO/IEC 17025:2017· Lab ID NKM/EQ-101
Ductility Testing Machine at the NKMPV NABL-accredited laboratory, Pinjore
Ductility Testing Machine — NKMPV NABL laboratory, Pinjore

The Ductility Testing Machine measures the ductility of bitumen — the distance in centimetres a standard briquette of binder stretches before the thread breaks, pulled at 50 mm/min at 27 °C in a water bath. Ductility reflects the binder's ability to deform without cracking, per IS 1208.

What this equipment tests

  • Ductility of paving bitumen at 27 °C
  • Binder flexibility / adhesion assessment
  • Grade compliance for road bitumen

Applicable Indian Standards

  • IS 1208 — Determination of ductility of bitumen
  • IS 73 — Paving bitumen — specification

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Frequently asked questions

What does ductility measure?

How far a bitumen sample stretches before breaking — an indicator of its flexibility and resistance to cracking.

What are the test conditions?

Pulled at 50 mm/min at 27 °C in a temperature-controlled water bath, per IS 1208.