Proportioning Plan For Stationary Asphalt Plant
2021.04.14
Stationary asphalt plant is common seen asphalt mixing plant equipment type in road and highway construction project. From the perspective of country's highway situation, asphalt pavement is the most used, which is one of the reasons for the rapid development of asphalt mixing plants. Under the situation of rapid economic development, the quality problems on the surface of asphalt pavement are gradually increasing, which puts forward higher and higher requirements for the quality of asphalt. It is understood that the primary factor that affects the quality of the use of asphalt is the ratio of raw materials. This is also involved in the introduction of the asphalt mixing plant.
In order to obtain high-quality asphalt products, in addition to the stationary asphalt plant equipment to meet the requirements, choosing the appropriate asphalt mixture grading type is also a top priority. According to country’s current regulations, the maximum particle size of the asphalt mixture on the top layer of the highway should not exceed half the thickness of the layer; and the maximum particle size of the aggregate of the asphalt mixture in the middle layer should not exceed two-thirds of the thickness of the layer; The maximum nominal size of aggregate of the pavement structure layer mixture should not exceed one third of the layer thickness.
From this analysis, if the asphalt surface layer with a certain thickness is selected according to the above specifications, the particle size of the asphalt mixture aggregate is generally too large, which will inevitably bring difficult construction difficulties to the construction of the asphalt concrete pavement. After investigation, experiment, analysis, and comparison, it can be seen that the lower layer has a wide choice of options, so the AG-201 gradation type can be used; while the choice of the upper layer mixture type is more difficult, and it is necessary to achieve a reasonable choice of this mix ratio. , On the one hand, we must investigate as many aggregate resources as possible, on the other hand, we must also consider the model of the asphalt mixing plant equipment.
In order to ensure the quality of the stationary asphalt plant road construction project, the engineering materials must be strictly selected and inspected. Therefore, the selection and determination of raw materials should be based on the requirements for the pavement structure and quality of use, and combined with the supply of ground materials, and inspected in accordance with the requirements of the relevant test procedures. Choose the best material so that all the technical indicators of the material meet the specified technical requirements.
