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Related Experiment Video

Updated: Jun 13, 2026

Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight

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Published on: May 31, 2022

Rheological Behavior and Aging Resistance of SBS/Lignin Composite Modified Asphalt.

Wenliang Wu¹, Longfei Li¹, Mukai Huang¹

¹School of Civil Engineering and Transportation, South China University of Technology, Guangdong 510641, Guangzhou, China.

|June 12, 2026

Summary

Adding lignin to styrene-butadiene-styrene (SBS) modified asphalt enhances its resistance to aging. This bio-based additive improves antioxidant properties and rheological performance, potentially extending pavement service life.

Keywords:

SBS/lignin composite modified asphalt antioxidative performance molecular dynamics simulation rheological properties

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Published on: January 29, 2020

Area of Science:

Materials Science
Chemical Engineering
Civil Engineering

Background:

Thermal-oxidative aging degrades styrene-butadiene-styrene (SBS) modified asphalt, shortening pavement lifespan.
Lignin, a renewable resource, possesses active phenolic hydroxyl groups, suggesting potential as a bio-based asphalt modifier.
Investigating lignin's role in SBS modified asphalt offers a sustainable approach to improving material durability.

Purpose of the Study:

To evaluate the antioxidative effect of lignin on SBS modified asphalt.
To assess the impact of lignin incorporation on the rheological properties of SBS modified asphalt.
To explore lignin as a potential bio-based auxiliary modifier for asphalt binders.

Main Methods:

Molecular dynamics simulations to understand lignin-asphalt component interactions and molecular mobility.
Experimental rheological tests: temperature sweep (TS), Multiple Stress Creep and Recovery (MSCR), and Linear Amplitude Sweep (LAS).
Fourier transform infrared spectroscopy (FTIR) to analyze chemical structure changes during aging.

Main Results:

Molecular simulations indicated preferential association of lignin with asphaltene and resin, altering asphalt component mobility.
Rheological tests revealed that lignin increased complex shear modulus and rutting factor, enhancing stiffness.
LAS tests showed reduced fatigue life in unaged asphalt but improved fatigue resistance in aged asphalt due to slower oxidation.
FTIR confirmed lignin's role in reducing sulfoxide formation and preserving polybutadiene structure during aging.

Conclusions:

Lignin shows promise as an auxiliary antioxidant modifier for SBS modified asphalt, improving aged binder performance.
The addition of lignin positively influences rheological properties and oxidative stability.
Further research is needed to verify source-specific molecular mechanisms of lignin's effects.