Asphalt warm-mix agent and asphalt mixture mixed by same as well as preparation methods thereof

Abstract

The invention relates to an asphalt warm-mix agent, comprising the following components in percentage by weight: 1.0-2.0% of alkylamine type cationic surfactant, 3.0-5.0% of amide type cationic surfactant, 5.0-10.0% of ammonium salt type cationic surfactant, 1.01.5% of calcium chloride, and water with residual percentage. The invention also relates to an asphalt mixture with the pavement applicability basically same as the traditional hot-mix asphalt mixture and the mixing and construction temperature lower than 20-50 DEG C; the purposes of energy saving, emission reduction, longer construction season, asphalt aging reduction and easier compaction are realized by reducing the mixing temperature; the indexes of the compaction degree, the water stability, the high-temperature performance, the low-temperature performance and the like of the pavement after paving the asphalt are not lower than those of hot-mix asphalt mixture at the same stage; and the service life of the asphalt pavement is efficiently guaranteed.

Description

technical field [0001] The invention belongs to the technical field of road construction, and in particular relates to a warm asphalt mix agent, an asphalt mixture mixed with it and a preparation method for the two. The warm asphalt mix agent and the asphalt mixture mixed with it are mainly used in roads and bridges Tunnel and other road pavement. Background technique [0002] In road construction, asphalt pavement is usually paved with traditional hot mix asphalt mixture HMA (Hot Mixture Asphalt). The preparation process of the traditional hot mix asphalt mixture is: first heat the asphalt from room temperature to about 140 °C , and then heat the ore from room temperature to 170-180°C, and then mix the two at high temperature to form a hot mix asphalt mixture. The finished product temperature of the hot-mix asphalt mixture is not lower than 150°C, meeting the temperature requirements for paving and rolling. The traditional hot mix asphalt mixture has the advantages of sta...

AI Technical Summary

Problems solved by technology

The traditional hot mix asphalt mixture has the advantages of stable performance and has been widely used. However, during the preparation process, the asphalt and mineral aggregates are heated to such a high temperature, which consumes precious energy, and in the process of production and construction It will also emit a large amount of exhaust gas and dust, which seriously affects the surrounding environment and will cause harm to the health of construction workers. It can be seen that the extensive use of traditional hot-mix asphalt mixtures does not conform to my country's "resource-saving and environment-friendly" development concept

[0003] In some road construction, cold-mix asphalt mixture is also used. The cold-mix asphalt mixture is prepared at room temperature, and the construction operation is also carried out at a lower temperature. However, the pavement paved with cold-mix asphalt mixture has the disadvantage of poor road performance, and it is difficult to meet the large-area construction of high-grade highways.

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