Discussion on Rock-Fill Embankment and Manufactured Sand Using Tunnel Abandoned Dreg in Hu-Yang Expressway

Abstract:

The Hu-Yang expressway, the first one in mountainous area in Shannxi province, has two conflicts in construction. One is the tunnel abandoned dreg is difficult to place, and cause ecological environment damage; the other is the project needs so much filler and sand which is scarce along the line. The tunnel abandoned dreg for rock-fill embankment and manufactured sand is designed to solve the problems. Slope greening, crushed run rock in certain range of roadbed and back of the retain wall and compaction control method of rock-fill embankment are discussed. And in view of technical and economic aspects, the application of manufactured sand is also studied. It decided to adopt manufactured sand in the Hu-Yang expressway for the first time in highway construction in Shaanxi province.

• Periodical: Applied Mechanics and Materials (Volumes 178-181)
• Pages: 1499-1502
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.178-181.1499
• Online since: May 2012
• Authors: Huai Yu Yuan, Xiao Mou Wang, Wen Jia Song
• Keywords: Expressway in Mountainous Area, Manufactured Sand, Rock-Fill Embankment, Tunnel Abandoned Dreg

References

[1] The design and construction methods of rock-fill embankment have been put forward, including arch skeleton protection and greening, crushed run rock in roadbed and back of retaining wall and the compaction control methods.

[2] In view of technical and economic aspects, the application of manufactured sand is discussed. It decided to adopt manufactured sand partly in the Hu-Yang expressway for the first time in highway construction in Shaanxi province.

[3] It achieves good economic benefits，ecology benefit and social benefit for using tunnel abandoned dreg for rock-fill embankment and manufactured sand, in the meantime it is valuable for other highways.