Asphalt Mixture Hydrothermal Susceptibility Tester HTHY-0749A

Product Introduction

Compacted asphalt mixture specimens are placed in a sealed pressure chamber and subjected to repeated water pressure with a Lorentzian waveform. The conditioning process accelerates moisture-induced damage within the asphalt mixture. The conditioned specimens are subsequently subjected to relevant performance tests to evaluate the moisture susceptibility and water stability of the asphalt mixture.

Standard

JTG 3410-2025 / T0749-2025

Test Principle

The equipment provides an accelerated conditioning process by applying repeated water pressure under controlled temperature conditions, generating pore water pressure within the asphalt mixture specimens. This accelerated conditioning promotes the effects of moisture and repeated water pressure on the asphalt mixture within a relatively short period of time.

During conditioning, the specimens in the pressure chamber are subjected simultaneously to water immersion, elevated temperature, and repeated water pressure. These combined effects can weaken the adhesion between the asphalt binder and aggregate and soften the asphalt binder, thereby reducing its cohesive strength and accelerating moisture-induced damage.

Key Features

• Equipped with an industrial PC for display and control, providing simple operation and allowing test parameters to be saved.
• Real-time display of relevant test parameters.
• Capable of simulating moisture-induced damage in asphalt mixtures.
• Short conditioning time, with a complete test cycle achievable within several hours.
• Test pressure and temperature can be set according to test requirements.
• Multiple specimens can be conditioned in a single test, including Marshall specimens, gyratory-compacted specimens, and wheel-tracking slab specimens.
• Water filling and air venting are performed automatically during the test.

Technical Specifications