Modified asphalt composition with creeping characteristic and preparation method thereof

Abstract

The invention provides a modified asphalt composition with a creeping characteristic, which comprises the following components in parts by weight: 15-60 parts of asphalt, 3-15 parts of modifying material, 5-30 parts of rubber powder, 15-60 parts of softening agent, 15-60 parts of inorganic powder, 3-25 parts of viscosity regulating agent, 0.3-1.5 parts of peptizing agent and 0.1-2 parts of coupling agent. A preparation method of the modified asphalt composition comprises the following steps of: adding the softening agent into a reaction kettle, heating to 170 to 200 DEG C, adding the modifying material, agitating, adding the asphalt and the rubber powder, and agitating for 1-2 h to obtain an intermediate raw material; levigating the intermediate raw material to 150-250 meshes, and putting back to the reaction kettle; and finally, adding the inorganic powder, the viscosity regulating agent, the peptizing agent and the coupling agent into the reaction kettle, agitating and dispersing uniformly. The modified asphalt composition has the characteristics of excellent water-proof performance, strong binding capability and continuous binding capability, large elongation percentage and good low-temperature flexibility.

Description

technical field [0001] The invention relates to a modified asphalt composition with creep properties and a preparation method thereof, belonging to the technical field of chemical industry. Background technique [0002] Asphalt is an excellent basic building material with a series of advantages such as impervious, non-absorbent, non-conductive, corrosion-resistant, good adhesion and impact resistance. It is also the leftovers after petroleum refining, and it is cheap, and has the functions of bonding, waterproofing and anticorrosion. As construction materials and raw materials, it is widely used in various industries such as transportation (roads, railways, aviation, etc.), construction, agriculture, water conservancy projects, industry (extraction industry, manufacturing industry), and civil use. Disadvantages of asphalt are temperature sensitivity and climatic instability. After decades of polymer modification, the performance of asphalt has been greatly improved, and th...

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Problems solved by technology

But another problem has arisen from this, that is, once the waterproof layer produces small holes or cracks in a certain part and leaks water, there will be water channeling under the waterproof layer, resulting in multiple leaks in the room, and it is difficult to find the leak. The source of the leakage brings great difficulty to the repair work

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