Slurry asphalt emulsion sealant technology is the use of graded stone or fine sand as aggregate, with asphalt emulsified as a binder, then add the proportion of water and filler after the pavement formed by a layer of thin asphalt technology The Asphalt emulsion coating technology in the most recent years of asphalt pavement construction has been widely used, but also to mature, slurry asphalt emulsion sealing technology should pay attention to emulsified asphalt, mineral powder, aggregate, and the proportion of the distribution of additives To be a reasonable configuration, stirring into a paste, paving construction requires uniform paving construction, to ensure that the asphalt road paving construction after completion of a strong firmness, density and wear resistance.
The construction technology of the middle seal layer is mainly used for traffic flow in general, with mild crack, road surface asphalt pavement, the construction technology in the construction of asphalt pavement in the effective application of the pavement can effectively control the cracks, Coarse aggregate can also form a skeleton of the structure of the asphalt pavement in the cracking, aging and loose some problems at the same time can play a role in delay and maintenance, asphalt pavement wear resistance, anti-skid performance is also greater The promotion of the role. Coarse cover construction technology is mainly used for traffic flow larger, asphalt road wear layer and highway asphalt preventive cover on the use of the actual construction process, if the existing road to do double laying construction, Semi-rigid base can be used in the construction of the application of the caisson, the actual operation of the laying of a layer of coarse cover and then laying the cover layer; reinforced cover construction technology to be used for low road grades, traffic flow smaller Such as the township road asphalt pavement on the highway, in the highway asphalt pavement construction and traffic flow is relatively large asphalt road, in order to effectively replace the repair overcoat, thick cover construction technology is often used.
Construction Technology of Asphalt Highway Local Cold Recycling in Asphalt Highway Maintenance Technology
Asphalt road in situ cold regeneration construction technology, refers to the old pavement surface material and the original grass-roots on the effective use of the construction technology, the road in situ cold regeneration technology in the construction of the new bone Materials, water and additives should be allocated in a certain proportion, the construction materials to be uninterrupted milling, mixing, crushing, laying, compaction and forming the construction process to ensure that through the above construction process to complete a new road Grassroots, new pavement grassroots in the construction quality and grass-roots performance to meet the relevant requirements.
In recent years, asphalt road in situ cold regeneration construction technology as a new construction technology is widely used to the asphalt road re-transformation and maintenance, maintenance work, its working principle: the construction of technical personnel to operate an alloy tool The rotor of the professional machinery and equipment, the material cutting of the construction process, the synchronization of the regeneration machine is able to promote the water tanker in the water, airborne system automatically spray water into the mixing device. And then through the computer control to accurately measure the mixing device in the internal spray of water and cutting the material can be fully mixed to ensure that in the compaction of the construction work to have the best water supply protection. Emulsified asphalt, foam asphalt in situ cold regeneration construction technology construction is also in accordance with the above principles by the regeneration machine to complete.
Asphalt road in situ cold regeneration construction technology and the traditional asphalt road re-transformation and maintenance of maintenance technology compared with: low-cost transformation and maintenance, do not change the original road section of the overall road but to improve the quality of the original road to enhance the road Grade, simple construction process will not cause environmental pollution around the construction and other advantages. Low-cost transformation and maintenance of the maintenance is mainly reflected in the local cold regeneration construction technology on the original rational use of paving materials, with statistical data for the traditional asphalt road re-transformation and maintenance of maintenance technology can reduce the cost of about 30% Not to change the original road section of the overall road, but to improve the quality of the original road, which upgrade the road level is mainly reflected in: the use of new technology can make the road after the overall carrying capacity to achieve the original design capacity, and Do not change the original elevation of the road to extend the life of the road. Simple construction process will not cause environmental pollution around the construction is mainly reflected in the man-machine with one molding, waste recycling, reducing the use of new aggregate materials, the environment and resources also played a protective role.
Construction Technology of Synchronous Gravel Seal in Asphalt Highway Maintenance Technology
Asphalt road maintenance technology in the synchronous gravel seal layer construction technology is in the same time together with the aggregate and asphalt binder, through the continuous rolling of the formation of the asphalt gravel seal is synchronous gravel seal construction technology , In this construction process need to pay attention to the rolling entity to be rubber tire entity. The construction technology of synchronous gravel sealing layer is a good way to solve the problem of poor adhesion between aggregate and bitumen in traditional seal construction. The construction technology of gravel sealing layer can be used for the traditional construction technology and synchronous construction technology. The construction technology of synchronous gravel sealing layer has the following advantages: (1) The construction technology of synchronous gravel seal layer can greatly improve the wear resistance of asphalt pavement (2) the amount of water infiltrated by the rainwater after the gravel seal road surface can be greatly reduced, and the service life of the road can be prolonged; (3) The water quality of the road can be prolonged by the amount of water used to repair the rut and the road crack and so on. ) Synchronous gravel seal construction technology from the cost point of view is lower than the traditional seal construction, synchronous gravel seal construction technology can reduce the cost of materials and equipment inputs, new technology, new equipment to improve the efficiency of the construction Play a supporting role, greatly improving the construction efficiency. Synchronous gravel seal construction technology pavement maintenance rate is lower than the traditional seal construction.
The main operation of the synchronous gravel seal construction technology is: by the professional construction workers using synchronous gravel seal car, the asphalt and stone mixed evenly after the spray on the road, in order to facilitate the uniform mixing of asphalt and stone, asphalt The temperature should be more than 160 degrees Celsius. Spray the mixture at the same time using the roller to the mixture rolling, until the road surface strength to meet the requirements so far. Among them, if the application of the case of emulsified asphalt, the construction staff also required rapid deodorization work, demulsification operations to ensure that the solid content reached the highest value, in order to avoid the flow phenomenon. Synchronous gravel seal construction technology core technical requirements is to ensure that as much as possible to ensure that the area of asphalt and stone to maximize the area.