Warm mix regenerant for asphalt pavement and its preparation method and use method

Abstract

The invention relates to an asphalt pavement warm-mix regeneration agent, a preparation method and a use method thereof. In the asphalt pavement regeneration technology, the heating temperature of the hot regeneration technology is high, and it is easy to age again when mixed with the old asphalt pavement material, and the old material parameter is small; the cold regeneration technology takes a long time to form the strength of the mixture and needs to add cement, which reduces the durability . The asphalt pavement warm-mix rejuvenator of the present invention has the following formula: 15-60 parts of long-chain alkanes and naphthenes, 10-15 parts of high-oil asphalt, 15-60 parts of furfural extraction oil, 5-10 parts of dispersant, plasticizer 1-5 parts, 5-10 parts of toughening agent and 1-5 parts of anti-aging agent are mixed and melted, mixed with milled asphalt mixture old material, new stone material and new asphalt at a temperature of 120-150 ° C. The present invention increases the parameters of old asphalt pavement materials to more than 50%, and controls the mixing temperature in the warm zone, which not only reduces mixing energy consumption and mechanical loss, but also effectively reduces the aging degree of asphalt pavement and improves the old asphalt pavement. The utilization rate of materials; the traffic can be opened faster.

Description

technical field [0001] The invention belongs to the technical field of asphalt mixture manufacture, and in particular relates to a warm-mix regenerant for asphalt pavement, a preparation method and a use method thereof. Background technique [0002] Asphalt pavement recycling technology can be divided into hot recycling technology and cold recycling technology. Hot recycling technology is mainly used to restore the bonding properties of aged asphalt, and recycle asphalt and aggregates after reusing the role of asphalt as a binder; cold recycling technology is mainly to reuse the original road milling materials as aggregates. Among these two regeneration technologies, the production and construction process of the factory-mixed hot recycling technology and the factory-mixed cold recycling technology are relatively easy to control, so the use effect is relatively good, but there are also serious shortcomings. In the process of plant-mixed cold recycling, the strength of the c...

AI Technical Summary

Problems solved by technology

Among these two regeneration technologies, the production and construction process of the factory-mixed hot recycling technology and the factory-mixed cold recycling technology are relatively easy to control, so the use effect is relatively good, but there are also serious shortcomings.

In the process of plant-mixed cold recycling, the strength of the cold recycled mixture takes a long time to form; generally, a certain thickness of overlay is required; the performance of the mixture obtained by cold recycling is poorer than that of the hot mix asphalt mixture, and the generally used layer The lower level; cold mix technology generally requires the addition of cement, which reduces the durability of this level

In the process of factory mixing heat regeneration: the heating temperature of the aggregate is too high during heat regeneration and remixing. After mixing with the asphalt pavement milling old material, it is easy to cause the asphalt in the asphalt pavement milling old material to age again, affecting the mixture. service life; thermal regeneration requires high heating temperature, which increases energy consumption and aggravates the damage to the environment; asphalt pavement milling old material parameters are less, generally 15-30%