Rare earth modified cold repaired maintenance material for asphalt pavement, and preparation method

Abstract

This invention discloses rare earth-modified cold patching maintainance material for asphalt pavement, and its preparation method. The rare earth-modified cold patching maintainance material is composed of asphalt, rare earth, waste kerosene, grease trash and graded stone chips. The preparation method comprises: drying graded stone chips, mixing with asphalt cold patching mixed solution, and stirring to obtain rare earth-modified cold patching maintainance material. The method has such advantages as high feasibility and easy operation. The rare earth-modified cold patching maintainance material has such advantages as long storage time, good properties, low cost, no pollution, and high economic, environmental and social benefits. The rare earth-modified cold patching maintainance material can be used to repair asphalt pavement in snow and rain.

Description

technical field [0001] The invention relates to a rare earth modified cold patch maintenance material for asphalt pavement, and also relates to a preparation method of the cold patch material. The new cold patch material is convenient and suitable for repairing various road surface layers. Background technique [0002] Rare earths are lanthanide elements in the periodic table of chemical elements - lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), etc., are typical metal elements, and their metal activity is second only to alkali metals and alkaline earths Metal elements are more lively than other metal elements. Rare earth elements can form chemically stable oxides, halides, and sulfides, and are widely used in petroleum, chemical, metallurgy, and electronics industries. [0003] With the rapid development of the traffic industry, the problem of road maintenance in winter has become more and more prominent. Road maintenance works from November to April of th...

AI Technical Summary

Problems solved by technology

Under the action of impact load, the potholes will soon be connected, resulting in large-scale damage to local road sections, affecting the service life of national defense roads and vehicle driving safety

This vicious circle not only increases the difficulty of maintenance operations, increases maintenance costs, but also causes great inconvenience to the transportation of national defense materials for the troops.

One is that road surface diseases cannot be repaired in time, resulting in the transportation of national defense combat readiness materials, especially the transportation of national defense scientific research and cutting-edge precision instruments.

The second is that the damaged asphalt pavement cannot be repaired in time, which leads to the deterioration of the pavement disease and causes large areas of looseness, potholes, serious muddying of the roadbed and road surface, etc., resulting in an increase in maintenance costs year by year

According to the statistics of the maintenance department, the funds invested directly or indirectly in response to the above problems accounted for 41.8% of the total maintenance cost, which seriously affected the effective operation of the maintenance funds of the maintenance unit throughout the year, causing the maintenance unit to bear greater pressure on fund allocation

Third, it has a significant impact on driving safety

Especially when driving at night and in rainy and snowy weather, because the driver cannot judge the use ability of the road well and the potential safety hazards in the road ahead, traffic accidents such as vehicle rollover and vehicle collision occur from time to time, causing serious damage to the lives of the people and the safety of military supplies. had a major impact

Fourth, the conventional hot-mix repair method for asphalt pavement has relatively high requirements for construction technology, equipment, and construction environment, and the utilization rate of raw materials is relatively low, which is not conducive to emergency repairs during wartime