What Is Rubberized Asphalt?

Rubber asphalt is processed from raw tire tires into rubber powders, and then combined according to a certain thickness gradation ratio. At the same time, a variety of high polymer modifiers are added, and under fully mixed high temperature conditions (above 180 ° C) ), Modified asphalt cementing material formed after sufficient swelling reaction with matrix asphalt.

Rubber asphalt

Rubber pitch is first processed from waste tire raw material into

Improve

1. Reduced asphalt heating temperature to prevent high temperature aging of asphalt and prevent approaching

· Excellent anti-fatigue property to improve the durability of pavement;

· Because of its high volume and good elasticity, it improves the road surface against fatigue cracks,

The temperature of rubber asphalt needs to pay attention to the temperature. Because the viscosity of rubber asphalt is very large, the temperature should be controlled during construction to ensure the construction of rubber asphalt.

1. Rubber asphalt mixture (abbreviation: AR -1 13 ) (surface layer)

After 50 years of application, rubber asphalt has formed two mature gradation mixture product lines. Compared with conventional asphalt mixtures, rubber asphalt mixtures have a higher amount of asphalt (about 7.5%).

( 1 ) Open-graded mixture ( AR-OFC ): It is a mixture of high-amount rubber asphalt (9-10%) and aggregate with a single particle size.

Features and applications: Open-graded mixtures have good anti-slip, splash-proof, noise reduction and long-term stability, making them ideal surface materials for expressways and urban expressways. At the same time, the outstanding anti-reflective cracking ability of the grading mixture is widely used in ultra-thin cover of cement pavement.

( 2 ) Intermittent gradation mixture ( AR-AP ): It is made by mixing the intermediate particle size with intermittent gradation and rubber asphalt. The dynamic stability reaches above 3000, and the freeze-thaw splitting value reaches above 80.

Features and applications: Due to its good surface structure, water-tightness, and shear stability, discontinuous grading and mixtures are commonly used in urban road surfaces and reinforcement structures with more crossovers and speed changes.

Construction machinery: mixing station, paver, steel roller