Micro-surfacing process suitable for on-site replenishment construction

Abstract

The invention provides a micro-surfacing process suitable for on-site replenishment construction. The micro-surfacing process comprises three steps of the optimization of the overall structure of a road pavement, the improvement of a surface fine treatment material, and micro-surfacing on-site replenishment construction. The invention provides a road pavement fine-treatment method having the advantages of high pavement overall strength, good durability, good low-temperature cracking resistance, strong skid resistance, reduction of carbon emission, energy conservation and ecological environment protection. The construction efficiency can be improved, the construction progress can be accelerated and the energy can be saved; in short, the micro-surfacing process is an efficient continuous construction method.

Description

technical field [0001] The invention relates to a micro-surfacing process suitable for on-site replenishment construction, specifically a surface fine treatment method for road construction and maintenance, especially suitable for pavement of high-grade roads, airport runways, parking lots and bridges, etc. and conservation. Background technique [0002] Slurry seal layer is a pavement with a certain thickness formed by mixing emulsified asphalt, graded mineral materials, fillers, water and additives in a certain proportion into a paste-like flow mixture under normal temperature conditions, and paving it on the road surface in time. The thin layer plays the role of waterproof, anti-slip, wear-resistant and restores the function of the road surface. It is mainly used for the maintenance of the asphalt pavement of ordinary roads. Currently, it is less used in the maintenance of the asphalt pavement of the expressway. In recent years, the ordinary emulsified asphalt material h...

AI Technical Summary

Problems solved by technology

Such as long molding time after paving, low early strength, closed traffic during maintenance, easy softening in high temperature seasons, poor resistance to permanent deformation and durability, unsatisfactory high temperature stability, and easy damage in severe cold weather, etc., making it unsuitable for ordinary road asphalt In the case of large deformation of the road surface, it cannot meet the requirements of heavy traffic and heavy traffic on the road surface

[0003] For example, with the growth of highway traffic, the increase of overloaded and heavy-duty vehicles, the formation of channelized traffic, and global warming, the problem of rutting is still a worldwide problem. High temperature on the road surface is the most direct cause of rutting. The asphalt used in the modified slurry seal is also a kind of heat-absorbing material, and the absorption rate of solar heat radiation is as high as 0.80-0.95. Some areas are also extremely vulnerable to severe cold weather, which can cause cracks in the road surface in winter frost and ice, reducing the safety of road driving

Another example is that with the prominence of severe environmental problems such as smog in big cities such as Beijing, the environmental protection of automobiles has attracted increasing attention. However, the current micro-surfacing process has not taken into account how to use road construction materials to solve the problem of how to reduce automobile exhaust. The technical problems that have been decomposed cause the atmospheric environment to suffer a lot of pollution. At the same time, the vehicle exhaust also has an adverse effect on the materials in the road surface, reducing the performance of the road.

[0004] In addition, the existing micro-surfacing technology only focuses on the improvement of surface fine treatment materials or the improvement of surface fine treatment methods, without considering the overall structure of the pavement, so that the improvement effect of surface fine treatment methods on road performance is limited and cannot meet the requirements Situations with higher demands on the road

[0005] Moreover, the micro-surfacing of the prior art uses vehicles to transport materials back and forth, which belongs to intermittent transportation and construction, the project is discontinuous, and it is easy to cause waste of materials and bring adverse effects on traffic