Recycling technology of using the old asphalt and the use of the site excavated site mixing old pavement mix, paving, avoid the loss of material temperature during materials mixing from distance transport, saving transport costs and ensure smooth highway.
Technical analysis of asphalt repair
1．Drawbacks of normal pavement pothole
（1）Normal hot-mix equipment can not produce small quantities of finished materials, from the hot asphalt to finished products should be at least 3-5 days, moreover, from the mixing plant to the construction site of finished material, increasing the cost of the mix to repeat heating and warmed cost. Since the road has characteristics of a long line multi-point, and pavement slots are showing the dispersion characteristics of the distribution, conventional hot-mix equipment is suitable for larger quantities and concentrated projects.
（2）Emulsified asphalt can live mixed, but not supply at any time and high cost.
（3）Cold mix asphalt is the mixed material adding by 20% of kerosene and others, bagged and sealed storage, patcher use under low temperatures , high cost.
2．Advantage of this technique for regeneration of the old asphalt：
Old asphalt recycling technology is available all year round construction, convenient, at the construction site, at any time crushing recycling old material, at any time to restore to the new renewable heating mixing materials, ready to repair potholes, to keep the main highway perennial pits, It provides practical technical support. At the same time because of the old asphalt recycling reduce environmental pollution, reduce the waste of resources, turning waste into treasure.
In practice, compared with we mix the material with conventional emulsified asphalt mixing materials field mixing materials and low temperature, 50% cost savings, very significant economic benefits. In particular it embodies a huge social benefits to our deteriorating ecological environment , for mitigation the highway maintenance department underfunded plays great significance.
