@inproceedings{93081a34e22d4c49a43e2f49f9f15c65,
title = "Effect of sulfur on engineering properties of polymer-modified asphalt",
abstract = "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.",
author = "Chen, {Jian Shiuh} and Ho, {Han Chang} and Chen, {Yuh Shin} and Chang, {Wen Cheng} and Hou, {Ching Yuan}",
year = "2016",
month = jan,
day = "1",
doi = "10.3850/978-981-11-0449-7-197-cd",
language = "English",
series = "8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016",
publisher = "Research Publishing Services",
pages = "966--975",
booktitle = "8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016",
note = "8th International Conference on Maintenance and Rehabilitation of Pavements, MAIREPAV 2016 ; Conference date: 27-07-2016 Through 29-07-2016",
}