Research On Performance Of Nature Temperature Asphalt Mixture

In recent years, with the rapid development of economy, people’s living standardscontinue to improve. The requirements of economic efficiency, energy saving andenvironmental protection has gradually become the main concept of the modernproduction and living. Infrastructure area was no exception, as we all know, the asphaltpavement is the main form of modern road. Although many experts and scholars arestudying low-smoke or smoke suppression and other environmental protection asphaltpavement, but the effect is not obvious. energy consumption and serious pollution hasbeen an insurmountable technical problems. However, nature temperature asphaltmixture that modified by dilution technique at nature temperature do not need to beheated, so as to fundamentally solve technical problems of energy consumption andserious pollution. It is a new type of asphalt environmental protection material. Naturetemperature asphalt concrete can be used in the new road surface and old pavementmaintenance. It has good storage properties and used with the check, to reduceconstruction costs. Also, nature temperature asphalt mixture has applied in a variety ofclimatic and environment, less energy consumption less pollution, easy constructionand other benefits.The study of nature temperature asphalt mixture started relatively late in China. Inrecent years, many big companies are optimistic about chinese vast market prospects athome and abroad, began selling its asphalt products, however because of uneven qualityand expensive, it’s difficult to bear and be used a lot in pavement engineering.Therefore,we actively carry out technology research of nature temperature asphalt mixture has thevery vital significance. In this article, through the collection of data, indoor test andfield application, developed a nature temperature asphalt concrete for a variety ofclimatic and environment, less energy consumption less pollution, easy construction.This paper came to the following conclusion through a lot of tests:①Nature temperature asphalt is constituted by asphalt、modifier and diluent.Modifier and diluent are two key components of nature temperature asphalt, the roleof the diluent is to ensure that asphalt has a lower viscosity than the hot-mix asphaltat lower temperatures to maintain a certain liquidity. The main role of the modifieris to compensate and improve the performance of the asphalt.②Workability and storage of nature temperature asphalt mixture with the increase of diluent is getting better and better, but the strength is just the opposite. When thecontent is10%to20%，workability and initial strength of the mixture meet therequirements.③The number of compaction is75, too high to cause structural damage, too low not todense.④The mixing temperature of ACMP-1nature temperature asphalt mixture at80℃is the most appropriate and the mixing temperature of ACMP-2naturetemperature asphalt at100℃is most suitable.⑤Dynamic stability of ACMP-2nature temperature asphalt mixture is much largerthan800/mm dynamic stability of the asphalt mixture; that residual stability ofthe water stability is81%also meet requirements; Marshall stability is greater thansmallest stability8KN standard of the asphalt mixture.