A kind of porous low-noise pavement asphalt mixture and preparation method thereof
An asphalt mixture and low-noise technology, which is applied in the field of road construction materials, can solve the problems of low void ratio, interference with daily life of residents along the road, and high noise, and achieve low fine aggregate content, which is conducive to technology promotion and cost savings Effect
Inactive Publication Date: 2016-04-27
杨林江
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Problems solved by technology
The pavement paved with general asphalt mixture has low porosity. Vehicles running on this kind of pavement will make a lot of noise and cause great disturbance to the daily life of residents along the road.
Method used
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Embodiment
[0017] Embodiment: Weigh 85% coarse aggregate (the nominal maximum particle size of the particle is 13.2mm), 6% high viscosity SBS modified asphalt, 0.5% mineral fiber and 8.5% ore powder by weight percentage, coarse aggregate Pre-heat to 180-190°C, heat the asphalt to 160-170°C, the mixer is equipped with a special fiber feeding device, the fiber is directly and automatically added to the mixing pot or weighing hopper of the mixer, and the fiber is automatically dispersed by air blowing equipment. After putting in the coarse aggregate, dry mix for 8-10s, and the mixing temperature does not exceed 185°C, then put in mineral powder and asphalt, and the wet mixing time after spraying the asphalt is 30-35s, and the mixing temperature does not exceed 185°C, to obtain porosity Low noise pavement asphalt mixture. The factory temperature of the mixture is 170-180°C. The mixed asphalt mixture should be used immediately. When it needs to be stored in the storage bin, the degree of asph...
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Abstract
The invention discloses a porous low-noise road surface asphalt mixture and a preparation method thereof. The porous low-noise road surface asphalt mixture comprises the following components by weight percentage as follows: 70-85 percent of coarse aggregate, 5.5-6 percent of asphalt, 0.3-0.5 percent of fibre and the balance of ore powder. The preparation method of the mixture comprises the steps as follows: pre-heating the coarse aggregate and the asphalt, automatically dispersing and charging the fibre by adopting blowing equipment, performing dry agitation of the input coarse aggregate for 8-10 s and then inputting the ore powder and the asphalt, wherein the wet agitation time is 30-35 s after spraying the asphalt. By adopting the preparation method to pave a road surface, noise is reduced, the paved road surface is good in durability and drainage, less construction cost is increased, better social and economical benefits are obtained, and the technology popularization is facilitated in China.
Description
Technical field: [0001] The invention relates to the technical field of road building materials, in particular to an asphalt mixture and a preparation method. Background technique: [0002] With the improvement of national environmental protection policies, highway noise has increasingly become the focus of environmental protection work and residents along the road. The pavement paved with general asphalt mixture has low porosity, and the vehicles running on this pavement will make a lot of noise, which will greatly interfere with the daily life of the residents along the line. Porous noise-reducing asphalt pavement has good noise-reducing performance, reduces the noise hazards to residents along the road, does not require residents along the road to relocate, reduces the cost of the road, and has better social and economic benefits. Invention content: [0003] The object of the present invention is to provide a porous low-noise pavement asphalt mixture and its preparatio...
Claims
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IPC IPC(8): C04B26/26
Inventor 杨林江
Owner 杨林江