1. Equipment factors
Nozzle design: The structure, size and distribution of the nozzle determine the angle and flow rate of asphalt spraying, which directly affects the uniformity.
Pressure regulation: Stable pressure can ensure that asphalt is sprayed at a uniform flow rate, and pressure fluctuations can easily lead to uneven spreading.
Tank structure: Reasonable tank design can ensure smooth flow of asphalt and avoid local accumulation affecting uniformity.
Stirring device: Good stirring prevents asphalt precipitation and segregation, ensures uniform composition, and improves spreading uniformity.
2. Operation factors
Driving speed: Too fast or too slow speed will make the asphalt thickness uneven, and it is necessary to reasonably control and maintain a uniform speed.
Spreading height: The distance between the nozzle and the road surface affects the distribution of asphalt. Too high or too low is not conducive to uniform spreading.
3. Material factors
Asphalt viscosity and temperature: Viscosity changes with temperature, affecting fluidity, and the temperature needs to be controlled to ensure appropriate viscosity.
Asphalt composition and quality: Asphalt with uniform composition and stable quality can reduce blockage and unstable flow and improve uniformity.
