The Old Cold Recycling Of Asphalt Pavement Materials Technology Research

Each year, there are numerous asphalt pavement needing reconstructing. The old way which is to dig the old pavement away and rebuild a new one will produce masses of waste materials. This will occupy vast expanses of land, contaminate surrounding areas, and will result in an enormous waste of resources as well. The adoption of cold in-place recycling technology which could reutilize pavement materials is in advance with the present trend toward sustainable development, and therefore is a burning issue lying before the researchers and engineers.Based on the research, results from home and abroad, according to the characteristic of the widely-adopted semi-rigid pavement, the thesis studies the cold in-place recycling technology, and proposes the method of the mixture design of cold in-place recycling, the reasonable ratio of the pavement to the base and the amount of cement utilized. Moreover, the thesis delves on the mechanical property, construction craft and quality control of the old asphalt mixture after recondition, how to apply the recycling mixture to the base, and cater to the needs of performance.The thesis also draws a comparison between cold in-place recycling and rebuilding. And the results indicate that cold in-place recycling is a desirable mode in road mass-reconstruction, in particular in the regions lacking grit and pebbles.