Study on the Basic Properties of Silane Coupling Agent Modified Foamed Asphalt in the Monsoon Freezing Zone

Xihua Guan; Na Liu; Wenan He; Zijun Xiang

doi:10.54691/ns51m581

Authors

Xihua Guan
Na Liu
Wenan He
Zijun Xiang

DOI:

https://doi.org/10.54691/ns51m581

Keywords:

Monsoon Freezing Zone; Silane Coupling Agent; Foamed Asphalt; Basic Properties.

Abstract

In order to evaluate the basic performance of silane coupling agent-modified foamed asphalt under the monsoon freezing zone.The basic properties of matrix asphalt (AH90), foamed asphalt (FAH90) and silane coupling agent-modified foamed asphalt (MFAH90) after salt-freeze-thaw cycling were evaluated using needle penetration, softening point and ductility tests.The results show that the softening points of all types of asphalt gradually increase with the increase in the number of salt-freeze-thaw cycles, which enhances the high-temperature stability of asphalt to a certain extent.The high temperature performance of asphalt after salt-freeze-thaw cycle in descending order is: MFAH90>FAH90>AH90.Needle penetration of all types of asphalt showed a decreasing trend, and the viscosity of asphalt gradually increased.The ductility of all types of asphalt after different numbers of salt-freeze-thaw cycles is greater than 100cm, which meets the specification requirements.

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