Journal
PETROLEUM SCIENCE AND TECHNOLOGY
Volume 32, Issue 12, Pages 1490-1496Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10916466.2011.654303
Keywords
gamma irradiation; aged SBS modified asphalt; regeneration; irradiation dose; reticulation structure
Funding
- National Natural Science Foundation of China [50973018]
- Transportation Construction in Western China [200831800044]
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The damaged reticulation structure of SBS modifier was considered to be a main reason for the deterioration of pavement performances. The authors regenerated the damaged reticulation structure of aged SBS modified asphalt (SBS MA) by a gamma irradiation technology and assessed its potential applications. Changes of morphologies and chemical components in regenerated SBS MA were investigated by polarizing microscopy and Fourier transform infrared spectroscopy, respectively. Physical properties of regenerated SBS MA were measured to assess its potential applications. Results showed that reticulations were largely restored after 40 kGy irradiation and met the demand of pavement performances.
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