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Volume 18, Issue 4
  • ISSN: 2666-1454
  • E-ISSN: 2666-1462

Abstract

Background

The rationality of the mixing process specified in the “Technical Guideline for Construction of Direct-to-Plant SBS Modified Bituminous Pavement” needs further verification.

Objective

To study the dynamic modification effect during the mixing process of SBS-T and the optimal mixing process.

Methods

SBS-T-modified asphalt under different mixing processes was collected in this paper, and the microscopic images were obtained by using fluorescence microscopy. Then qualitative and quantitative analysis were conducted on the dynamic modification effect. The pavement performances of SBS-T modified asphalt mixture under different mixing processes were studied using the high-temperature rutting, low-temperature bending, and immersion Marshall tests.

Results

An increase in temperature is beneficial for SBS-T to reach a rapid melting state. The fluorescence microscopic area reaches its maximum at a mixing temperature of 180°C, a mixing time of 60s~75 s without asphalt, and a mixing time of 120 seconds with asphalt.

Conclusion

The mixing process of SBS-T modified asphalt mixture is as follows: modifier content of 6%~7.5%, mixing temperature of 170°C~180°C, mixing time of 60s~75 s without asphalt, and mixing time of 120 s with asphalt.

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2024-01-11
2025-06-19

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/content/journals/cms/10.2174/0126661454285167231229044154
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Capture of the Modification Effect of SBS-T Modifier on Asphalt and its Reasonable Mixing Process
Current Materials Science 18, 499 (2025); https://doi.org/10.2174/0126661454285167231229044154
/content/journals/cms/10.2174/0126661454285167231229044154
/content/journals/cms/10.2174/0126661454285167231229044154
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  • Article Type:     Research Article
Keyword(s): asphalt; dynamic modification effect; fluorescence microscopy; mixing process; pavement performance; SBS-T modifier

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