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[Chemical Knowledge]：Manufacturing method and process of building asphalt

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The manufacturing method
of construction asphalt
1. Introduction

Construction asphalt is an important product in the field of chemical production raw materials, widely used in road construction, waterproof materials, construction engineering and other fields. With the continuous development of science and technology, the manufacturing methods of construction asphalt are constantly improved to meet the ever-increasing performance requirements and environmental protection standards. This article will introduce a manufacturing method of construction asphalt, which aims to improve product quality and production efficiency.

2. raw material preparation

1. Petroleum asphalt: Select high-quality petroleum asphalt as raw material to ensure that it has good fluidity, stability and weather resistance.
2. Modifier: According to the product performance requirements, select the appropriate modifier, such as polymer, rubber, etc.
3. Additives: According to needs, choose the right amount of additives, such as antioxidants, anti-stripping agents, etc.

3. Manufacturing Process

1. Ingredients: According to the predetermined formula ratio, the petroleum asphalt, modifier and additives are added to the high-speed mixer.
2. High-speed mixing: In the high-speed mixer, the raw materials are fully stirred and mixed to ensure the uniform distribution of various raw materials.
3. Melt blending: The mixed materials are fed into the melt blender and melt blended at high temperature to make the modifier fully react with the petroleum asphalt to produce modified asphalt.
4. Dehydration and degassing: in the process of melt blending, the material is dehydrated and degassed to remove the water and gas.
5. Finished product cooling: The modified asphalt is cooled to an appropriate temperature to form a finished construction asphalt.

4. quality control

1. Testing the quality of raw materials: quality testing of raw materials such as petroleum asphalt, modifiers and additives to ensure that the raw materials meet the standard requirements.
2. Process control: In the manufacturing process, pay close attention to the changes of various process parameters to ensure that the manufacturing process is stable and controllable.
3. Finished product testing: Quality testing of finished products of construction asphalt, including penetration, softening point, ductility and other indicators, to ensure that the products meet the requirements of relevant standards and specifications.

5. environmental protection measures

1. Waste gas treatment: In the manufacturing process, the waste gas produced is effectively treated, such as the use of combustion method, absorption method, etc., to reduce the pollution of waste gas to the environment.
2. Wastewater treatment: The wastewater produced in the production process shall be treated and discharged after reaching the environmental protection standards to avoid pollution to water resources.
3. Waste residue treatment: reasonable disposal of waste residue generated in the production process can be used as resources or safe landfill to avoid pollution of soil and groundwater.

6. conclusion

the construction asphalt manufacturing method introduced in this paper, through the selection of high-quality raw materials, scientific formula ratio, advanced manufacturing technology and strict quality control measures, can produce excellent performance, stable quality of construction asphalt. At the same time, strengthen environmental management, take effective environmental protection measures, reduce the impact of the production process on the environment, in line with the requirements of sustainable development.

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