Mechanism Research on Water Damage of Asphalt Mixture Based on Chemical Thermodynamics

Abstract:

Moisture can be defined as the early loss of strength and durability caused by moisture penetrating through the asphalt-aggregate mixture. This failure can be adhesive occurring at the asphalt-aggregate interface or cohesive occurring within the matrix (asphalt binder plus mineral filler). Therefore, the knowledge of chemical thermodynamics theory will help a great deal in understanding the adhesive properties of the asphalt mixture within the water. Water damage model of asphalt mixture are presented based on surface and interface theory. Two types of aggreates, a limestone and sandstone, two asphalt binder of base asphalt and SBS modified asphalt are used to produce four different mixutres of HMA in the paper. The four mixtures are subsequently tested using the method and ranked. According analysis of results, the methods based on chemical thermodynamics theory offers viable alternative to the assessment of water susceptibility of HMA. This method is simple, quicker and equipment utilized can easily and cheaply be assembled.

• Periodical: Advanced Materials Research (Volumes 446-449)
• Pages: 2567-2572
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.446-449.2567
• Online since: January 2012
• Authors: Qing Yi Xiao, Yong Hui Lin, Hai Xue Hu, Ning Li Li, Cai Li Zhang
• Keywords: Asphalt Mixture (AC), Chemical Thermodynamics, Water/Moisture Damage

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