GEOTECHNICAL PERFORMANCE OF A HIGHWAY EMBANKMENT CONSTRUCTED USING WASTE FOUNDRY SAND

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GEOTECHNICAL PERFORMANCE OF A HIGHWAY EMBANKMENT CONSTRUCTED USING WASTE FOUNDRY SAND

Author: Fox, P J Mast, D G | Size: 4.10 MB | Format: PDF | Quality: Original preprint | Publisher: Purdue University/Indiana Department of Transportation JHRP | Year: 1998 | pages: 110

The purpose of this study was to evaluate the use of waste foundry sand (WFS) as a highway embankment material in a full-scale field demonstration project. This evaluation included geotechnical concerns, such as deformation, strength, hydraulic conductivity, and ease of construction. The report presents an introduction and previous research concerning WFS use in highway construction. A geotechnical laboratory testing program characterized the WFS used in the project, which was a waste product of Auburn Foundry, Inc., located in Auburn, Indiana. This study was also a part of the Federal Highway Administration Priorities Technology Program. The project site was a 275 m section of the County Route 206 highway project near Butler, Indiana. Three sections of the embankment were studied: a section built with clay borrow, a section built with natural sand, and a section built with WFS. The embankment was built during the summer of 1996. This report presents field testing data with regard to vertical and lateral deformations of the WFS embankment, in situ changes in pore pressures in the foundation soil during construction, and the post-construction in situ penetration resistance of the WFS. The performance of the WFS section is compared to that of the clay borrow and natural sand sections of the embankment. The results of laboratory and field testing of the Auburn Foundry WFS provide general guidelines for the choice of geotechnical parameters for preliminary design of WFS embankments. From a geotechnical perspective, the results indicate that WFS can be used successfully as embankment fill material for full-scale highway projects.

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