Effect of sulfur on engineering properties of polymer-modified asphalt

Jian Shiuh Chen, Han Chang Ho, Yuh Shin Chen, Wen Cheng Chang, Ching Yuan Hou

研究成果: Conference contribution

摘要

Storage stability is the one of the most critical issues in polymer-modified asphalt. This study describes the effect of sulfur on the engineering properties of asphalt modified by styrene-butadiene-styrene (SBS). At low sulfur concentration, a continuous phase is present and the composite behaves like asphalt with moderately enhanced elastic response. Appearance of a dispersed structure usually begins at 3% to 5% sulfur. At high sulfur concentrations the compatibility of SBS-modified asphalt is enhanced. Micrographs obtained from a transmission electron microscope illustrate that the addition of sulfur significantly improves the storage stability of SBS-modified asphalt at high temperatures. In-situ chemical reactions resulting from sulfur could reduce SBS's coarseness and enhance solubility of the polymer in the asphalt. The rheological properties of SBS-modified asphalt depend strongly on the sulfur level. Increasing sulfur levels leads to an increase in the complex modulus ratio of SBS-modified asphalt to pure asphalt, and consequently the addition of sulfur improves on the mechanical behavior of SBS-modified asphalt. The sulfur reinforcement becomes pronounced at higher temperature. The engineering properties of polymer-modified asphalt are influenced by the behavior of individual component that forms the material.

原文English
主出版物標題8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016
發行者Research Publishing Services
頁面966-975
頁數10
ISBN(電子)9789811104497
DOIs
出版狀態Published - 2016 一月 1
事件8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016 - Singapore, Singapore
持續時間: 2016 七月 272016 七月 29

出版系列

名字8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016

Other

Other8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016
國家/地區Singapore
城市Singapore
期間16-07-2716-07-29

All Science Journal Classification (ASJC) codes

  • 建築與營造
  • 土木與結構工程

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