Study on Low Temperature Performance of SBS Modified Asphalt and its Mixture

Jun Qing Chen; Ai Jun Li; Mei Qian Jin; Min Nan Zheng; Wan Yi Yang

doi:10.4028/www.scientific.net/AMM.587-589.1332

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 587-589Study on Low Temperature Performance of SBS...

Study on Low Temperature Performance of SBS Modified Asphalt and its Mixture

Abstract:

Prone to low temperature cracking of asphalt pavement problems in cold areas, testing BBR on 70# base asphalt and 4 kinds of different dosage of SBS modified asphalt, testing TSRST on their mixture to appraisal the low temperature performance of SBS modified asphalt mixture. Results show that compared with the temperature stress of internal cracks of base asphalt and SBS modified asphalt mixture not rise significantly. But the stress of SBS asphalt mixture growing slow and the temperature of cracking reduce obviously; it means the low temperature performance improved. This shows that SBS improves the toughness and reduced the modulus of asphalt mixture in low temperature, rather than increasing the tensile strength of mixture specimens.

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Periodical:

Applied Mechanics and Materials (Volumes 587-589)

Pages:

1332-1336

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.587-589.1332

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Online since:

July 2014

Authors:

Jun Qing Chen, Ai Jun Li, Mei Qian Jin, Min Nan Zheng, Wan Yi Yang

Keywords:

BBR Test, Low-Temperature Cracking, SBS Modified Asphalt, Tensile Strength, TSRST Test

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References

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