| 1. SummaryThe technology of completely cool reproduction to the old asphalt roadbed (called"Cool Reproduction"for short below) is on the basis of the old road, to mix with appropriate amount of additive selectively, according to the new design requirements, and in ordinary temperature, continue to accomplish the process of excavating, smashing, adding materials, paving and so on locally by using the technology. Then making level and pressing the roadbed. At last realizing the aim of building a kind of road subbase (or underpayment) of special level, and the aim of improving and promoting the roadbed.This technology can be widely applied to improve ordinary roads, such as the national roads, the provincial roads, the county/town roads and so on. The improved highways can be of the first, second, third, forth levels and of beyond the ordinary levels.The earliest countries to study Cool Reproduction are American and Germany. The technology begins in the 1910s, and is mature after the 1990s. It is widely applied to the city roads, the national roads, highways of the second level, and some highways between states.Our country's study about the technology starts very late. In 1998 Han Dan, He Bei province imported the first machine of Cool Reproduction throughout the country. From then on, other provinces such as Tian Jing, Liao Ning, Shan Dong imported the locally cool reproduction equipments and relevant technologies one after another. These provinces, referring to the successful experience of foreign countries, conducted experiments on some sections of the roads and succeeded. Till now, this technology has no relevant norms and standards in our country, and has not be spreaded in a large scale. It is of greatly practical value to test and probe this technology according to our local characteristics.Liao Cheng, Shan Dong province is located in the vast expanded plain formed by Yellow River. The traffic mileages of this district's highways have...
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