Water-Damage-Resistant Asphalt Mixture

Alkaline aggregates boost crack resistance

Gradation with alkaline aggregates and anti-stripping agents simultaneously improves binder-aggregate bond strength and mixture moisture resistance.

Huang, Guojing · Chen, Zixuan · Shuai, Wang · Hu, Dongliang · Zhang, Jiupeng · Pei, Jianzhong

Construction and Building Materials 2024

Advantages

Enhanced moisture resistance

With anti-stripping agents or alkaline aggregates, the tensile strength ratio and fracture energy ratio of the mixture in indirect tensile tests increase.

Rapid evaluation index

The POTS ratio (Rp) effectively reflects moisture damage resistance and can replace time-consuming fracture tests.

Material selection guidance

The influence patterns of binder, aggregate, and additives on bonding and failure characteristics are clarified, providing a basis for selecting optimal material combinations.

Applications

• Asphalt pavement moisture resistance：Directly enhance moisture resistance of asphalt pavements in wet environments
• Pavement material durability：Extend pavement service life through optimized material combinations
• Transportation infrastructure：Provide more durable mixtures for roads, airports, and other transportation infrastructure