Design and transformation method for integrally forming and paving asphalt composite crushed stone sealing layer

Abstract

The invention discloses a design and transformation method for integrally forming and paving an asphalt composite crushed stone sealing layer. The method comprises the following steps: S1, evaluating the pavement disease grade of a reconstructed road; S2, according to the S1, determining the thickness of the spread composite gravel sealing layer, determining the specification and dosage of a sealing layer material, and selecting existing construction equipment for combined construction; S3, according to actual engineering, calculating the use amount of the gravels and the asphalt of each layer of particle size, and transporting the gravels and the asphalt to a construction site through a dumper and a rubber asphalt transport vehicle; S4, establishing a uniform spreading length formula and an asphalt spreading amount control formula of each synchronous chip seal layer; S5, performing synchronous construction according to the formula established in the S4; and S6, performing on-site charging, and repeating the steps S5-S6 till construction is completed. According to the invention, the standardized construction process of the asphalt composite gravel sealing layer according to local conditions can be realized, the construction period is shortened, and the construction efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of reconstruction, overlay maintenance and new construction of urban roads and old roads, in particular to a design and reconstruction method for an integrally formed overlay of an asphalt composite crushed stone seal layer. Background technique [0002] With the rapid development of our country's economy, the transportation industry has entered an era of rapid development. However, road construction at all levels in our country started relatively late, and the technical force is relatively weak. Under the combined effect of heavy traffic load and natural environment, damage such as rutting, potholes, cracking, and subsidence will occur only a few years after it is put into operation. Phenomenon, which greatly reduces the performance of the pavement. Preventive maintenance technologies such as asphalt synchronous gravel seal technology can effectively alleviate the emergence of mild diseases, while severe di...

AI Technical Summary

Problems solved by technology

[0005] However, there is currently no corresponding construction method for the asphalt composite gravel seal, and the construction unit relies entirely on experience, and there are the following problems:

[0006] 1. There is no standardized construction process, construction scheduling is difficult, working time is wasted in vain, and construction efficiency is reduced. Moreover, without reasonable calculations, it often causes gravel to be scattered, asphalt is still being sprinkled with oil and other materials, or asphalt The former will cause poor bonding between asphalt and gravel, while the latter will cause no asphalt bonding, which will significantly affect the construction quality.

[0007] 2. There is no targeted construction based on the characteristics of each road. In the current construction process, because it relies on construction experience, it is impossible to accurately grasp the construction quality. As a result, all roads adopt the same overlay design and reconstruction plan. For the sake of quality Meet the standard, blindly increase the thickness of the composite gravel seal, resulting in waste of resources

[0008] 3. The current construction technology, for the sake of convenience, selects the entire section of construction. After the entire road is sprinkled with one layer, the subsequent layer is sprinkled. This will make the temperature of the asphalt and gravel of the upper layer already very low. The huge loss of temperature between layers will affect the bonding effect between layers

[0009] 4. In the existing construction technology, the rolling scheme is not formulated in combination with the characteristics of the composite crushed stone seal layer structure, resulting in the low compaction of the composite crushed stone seal layer structure, and it is impossible to realize its composite embedded extrusion and composite The function of waterproof and composite bonding affects the function of pavement

[0010] 5. In the existing construction technology, due to the limited capacity of the synchronous gravel sealing vehicle, it is necessary to go back and forth between the material yard and the construction site many times during the construction process, which wastes construction time, increases the construction period, and causes a lot of oil loss and equipment loss

Images