Road repairing and building asphalt mixture warm-mixing additive, preparation method thereof and using method thereof

Abstract

The invention relates to a road repairing and building asphalt mixture warm-mixing additive, a preparation method thereof and a using method thereof. The warm-mixing additive consists of lignin amine salt, chloroepoxy propane, OP-10, an amine anti-stripping agent, chlorhydric acid and industrial water. The preparation method comprises the following steps: preparing the lignin amine salt from lignin, the chloroepoxy propane and polyamine, and dissolving the lignin amine salt in water; and based on the mass of the solution, adding the OP-10, the amine anti-stripping agent and the chlorhydric acid into the solution, and uniformly stirring the mixture to obtain the warm-mixing additive. When used, the warm-mixing additive is mixed with asphalt; then the asphalt-containing warm-mixing additive is mixed with stones. The warm-mixing additive has the advantages that: warm-mixing additive which is a surfactant improves the state of the adhesion between the asphalt and the surfaces of the stones and the fluidity of the asphalt; and nitrogen, which serves as a hydrophilic radical in the amine, has very strong absorption force and adhesion force for the stones; environment-friendly and resource-saving production of changing waste into useful things and circularly using materials is realized because the lipophilic lignin is from extracts of wood paper-making liquid waste; and the production cost of the asphalt mixture is reduced.

Description

technical field [0001] The invention relates to a warm-mixing additive for road-building asphalt mixture and a preparation and use method thereof, belonging to the mixing technology of road-building asphalt mixture. Background technique [0002] There are usually two types of asphalt mixture mixing processes for road construction: hot mixing and cold mixing. The hot mixing process is to mix stone materials at a temperature of 178°C-182°C and asphalt at a temperature of 130°C-170°C to prepare asphalt mixture. This hot mixing process has high energy consumption, and the asphalt mixture mixed with this process is prone to thermal aging of asphalt and the emission of harmful gases after paving and rolling the pavement. The cold mixing process first makes asphalt into emulsion, and then mixes it with stone at a temperature of 20°C-35°C to prepare asphalt mixture. This cold mixing process has low energy consumption and has the advantages of environmental protection. The road sur...

AI Technical Summary

Problems solved by technology

The first three types of warm mixing technology are mainly applied in Europe, but because the technology is owned by each party independently, more detailed technical details are still in the confidential stage, and there are shortcomings such as high cost and complicated production, so far no substantial progress has been made. The fourth type of technology is an open technology. In the past two years, many test roads have been paved in the United States, South Africa, Canada, China, etc.

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