Mechanism Research on Post-Processing Technology in the Widening Application of Expressway

The most common expressway that has been built and put into use in China is a two-way, four lane road. Some of these expressways have been unable to adapt to the traffic growth and social development requires an urgently need to broaden the road traffic capacity. From the perspective of long-term and economy, widening will become the mainstream of the future expressway construction. Based on the analysis of the key problem and common treatment measures in the old road widening project, this paper researched and analyzed the processing mechanism, method and processing effect of post-processing technology with small non-sand concrete pile in the applications of widening engineering of expressways. It provides a new treatment method for the widening construction of expressways.