3D Reconstruction of Polymer Phase in Polymer-Modified Asphalt Using Confocal Fluorescence Microscopy

Gengren Hao, Yuhong Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

1 Citation (Scopus)


Associations between polymer morphology and the properties of polymer-modified asphalt (PMA) have been widely reported. Fluorescence microscopy (FM) plays a key role in analyzing the morphology of polymers in PMA. However, two-dimensional (2D) fluorescence images may not reveal the true nature of polymer phase in PMA, because the image is a projection of the three-dimensional (3D) space on a 2D plane. This study reconstructs the 3D polymer phase in PMA by using confocal fluorescence microscopy and image processing techniques. The method is successfully used in analyzing the morphology of polymers in styrene-butadiene-styrene (SBS) PMA. A quantitative comparison is made between the results of the 3D volume fraction and 2D area fraction of the polymer phase. The findings indicate that 3D reconstruction is necessary to understand the true state of the polymer phase in PMA. This research contributes to the body of knowledge in civil engineering materials by developing the method for 3D reconstruction of the polymer phase in PMA and discovering the more realistic state of the polymer phase.

Original languageEnglish
Article number04020400
JournalJournal of Materials in Civil Engineering
Issue number1
Publication statusPublished - 1 Jan 2021


  • 3D reconstruction
  • Laser scanning confocal fluorescence microscope
  • Morphology
  • Styrene-butadiene-styrene (SBS) modified asphalt binder

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials

Cite this