Easy compact asphalt mixing material and preparation method of easy compact asphalt mixing material

Abstract

The invention discloses an easy compact asphalt mixing material and temperature and time control parameters in the preparation process of the easy compact asphalt mixing material. The easy compact asphalt mixing material comprises 100 parts of ore materials, 5.8 to 6.4 parts of modified asphalt, 0.2 to 0.3 parts of polyester fibers and 0.3 parts of easy compact agents, wherein the ore materials comprise the following ingredients in weight proportioning: 50 percent to 60 percent of 8-11mm macadam, 10 percent to 15 percent of 5-8mm macadam, 25 percent to 35 percent of manufactured sand and 3 percent to 8 percent of limestone ore powder. The ore materials are heated to 150 DEG C to 160 DEG C and is then subjected to dry stirring with polyester fibers for 5 to 10s, the modified asphalt is heated to 165 DEG C to 175 DEG C, the easy compact agents start to be sprayed after the modified asphalt is sprayed for 3s, the total time for spraying the asphalt and the easy compact agents is controlled to be within 13s, the ore powder is added after the wet stirring for 6s, the total time of the stirring and the mixing is not lower than 60s, the cylinder discharge temperature is controlled to 135 to 155 DEG C, and the easy compact asphalt mixing material is obtained. The mixing material is easy to compact, the rutting resistance capability is high, the construction temperature is reduced to 30 to 50 DEG C, heating energy sources are saved by about 22 percent, the emission of asphalt smoke and greenhouse gas such as CO2 is reduced, the effects of energy saving, emission reduction and environment protection are obvious, meanwhile, the construction quality is improved, the effective construction time is prolonged, and the work period is shortened.

Description

technical field [0001] The invention relates to an asphalt mixture, in particular to an easy-to-compact asphalt mixture. [0002] The invention also relates to a method for preparing the easy-to-compact asphalt mixture, in particular to the time and temperature control of the preparation process. Background technique [0003] Patent CN101302348A discloses "A Warm Asphalt Mixture and Its Preparation Method": put the mineral material with a weight ratio of 90wt% to 96wt% and a temperature of 140°C to 155°C into the mixing pot, and add an appropriate proportion at a temperature of 140°C to 155°C ℃ hot asphalt binder, mix for 20s~30s, then add a certain amount of warm mix asphalt modifier Sasobit, and mix for 20s~30s to prepare warm mix asphalt mixture. Using this method to prepare warm-mix asphalt mixture, the production process is simple, and the asphalt mixture has good high-temperature performance, but its additives are not ideal for reducing the mixing temperature and roll...

AI Technical Summary

Problems solved by technology

Although the mixture has the properties of water damage resistance, rutting resistance, fatigue resistance, and low temperature resistance, the production process is complicated and the production cost is high, and the chemically modified mortar and asphalt binder are foamed and mixed in the process. The function of chemically modified glue will greatly affect its cooling effect

[0005] The literature "Research on the Application of Easy-Dense Asphalt Concrete in Rutting Treatment" (Ding Linjiang, Shao Hu, "Highway Traffic Science and Technology (Application Edition)" 2009) introduces the composition design and road performance research of easy-dense asphalt concrete. Indoor research and road performance effect prediction analysis did not involve the actual formulation of easy-to-compact asphalt mixture production, and the control temperature did not meet the actual requirements

Images