Study on water stability damage law of salt storage asphalt mixture under freeze-thaw cycle
XU Bingqian
WANG Hu
SHI Jingfei
ZHONG Xiaoling
Abstract：Based on the freeze-thaw cycle test,the long-term performance change law of salt storage asphalt mixture was studied.Combined with the principle of freeze-thaw damage and Logistic model,the decay characteristics of asphalt mixture with different types of salt storage materials under freeze-thaw cycles were evaluated.The results show that the salt storage material has little effect on the high temperature performance of the asphalt mixture,but it will reduce the low temperature crack resistance of the mixture.With the increase of freeze-thaw cycles,the porosity of matrix asphalt mixture and powdered salt storage material a and b asphalt mixture shows an upward trend,while the freeze-thaw splitting strength ratio of matrix asphalt mixture and powdered salt storage material a asphalt mixture shows an overall downward trend.However,the porosity of granular salt storage material c asphalt mixture first increases and then tends to be gentle.The Logistic model can better reflect the change rule of freeze-thaw damage variables.
Keywords：the asphalt mixture include saltwater stabilitydamage modelfreeze-thaw cycle
Publication Date：2024-10-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 57-61,68 )