Long-Term Performance of a Highway Embankment Built with Lightweight Aggregates
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Volume 31, Issue 5
Abstract
This paper presents the results from a field and numerical studies performed to understand the long-term performance of a bridge approach embankment designed with lightweight, expanded clay and shale (ECS) aggregates to mitigate the settlements on a soft soil foundation. The ECS aggregates and traditional select fill were used to build southern and northern approach embankments, respectively, for a bridge on State Highway 360 in Arlington, Texas. An extensive series of laboratory tests were conducted to obtain the engineering behavior of ECS and the select fill materials before the construction. These properties were then used in the finite element modeling to simulate the embankment sections to verify the long-term performance. The embankment sections were instrumented with vertical inclinometers to monitor the lateral movements for more than four years. This data was used to validate the numerical models with an acceptable amount of accuracy. Then a parametric study was conducted for varied heights of embankments, thicknesses of foundation soil and also compression/recompression indices of foundation soil to develop design charts. The numerical, as well as field data, indicate that there is a two-thirds reduction in settlement of the foundation soil with the use of the lightweight material. The pre-consolidation pressure and the overconsolidation ratios govern the settlement behavior of the foundation soil due to lightweight embankments. The design charts can be useful in either predicting the embankment settlements for a given ECS embankment configuration or determine the allowable height of the ECS embankment for a specified settlement value when constructing in similar foundation soil encountered in this study.
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Acknowledgments
The authors would like to acknowledge the Texas Department of Transportation (TXDOT) for the financial support for this project under an interagency contract agreement. The authors also would like to thank the support from TXDOT, Fort Worth District officials, especially Mr. Richard Williammee, for their continuous support.
References
Archeewa, E. (2010). “Comprehensive studies on deep soil mixing and lightweight aggregates applications to mitigate approach slab settlements.” Ph.D. thesis, Univ. of Texas at Arlington, Arlington, TX.
ASTM. (2011a) “Standard test method for direct shear test of soils under consolidated drained conditions.” ASTM D3080/D3080M-11, West Conshohocken, PA.
ASTM. (2011b) “Standard test methods for one-dimensional consolidation properties of soils using incremental loading.” ASTM D2435/D2435M-11, West Conshohocken, PA.
Briaud, J. L., James, R. W., and Hoffman, S. B. (1997). “Settlement of bridge approaches (the bump at the end of the bridge).”, Transportation Research Board, National Research Council, Washington, DC.
Das, B. S. (2009). Principles of geotechnical engineering, 7th Ed., Cengage Learning, Boston.
DeMerchant, R. M., and Valsangkar, A. J. (2002). “Plate load tests on geo-grid reinforced expanded shale lightweight aggregate.” J. Geotex. Geomembr., 20(3), 173–190.
Holm, T. A., Ooi, O. S., and Bremner, T. W. (2003). “Moisture dynamics in lightweight aggregate and concrete.” Proc., 6th CANMET/ACI Int. Conf. on the Durability of Concrete, American Concrete Institute, Farmington Hills, MI, 167–184.
Holm, T. A., and Valsangkar, A. J. (1993). “Lightweight artificial and waste materials for embankments over soft soils.” Transp. Res. Rec., 1422, 7–13.
Hopkins, T. C. (1969). “Settlement of highway bridge approaches and embankment foundations.”, Kentucky Transportation Center, Lexington, KY.
Kramer, S. L., and Sajer, P. (1991). “Bridge approach slab effectiveness.”, Washington State Dept. of Transportation, Olympia, WA.
Lin, Q. L., and Wong, I. H. (1999). “Use of deep cement mixing to reduce settlements at bridge approaches.” J. Geotech. Geoenviron. Eng., 309–320.
Matsuo, M., and Kawamura, K. (1977). “Diagram for construction control of embankment on soft ground.” Soils Found., 17(3), 37–52.
Pedarla, A., Chittoori, S., Puppala, A., Hoyos, L., and Saride, S. (2010). “Influence of lime dosage on stabilization effectiveness of montmorillonite dominant clays.” GeoFlorida 2010, ASCE, Reston, VA, 767–776.
PLAXIS 2D [Computer software]. Plaxis, Delft, Netherlands.
Puppala, A. J., Archeewa, E., Saride, S., Nazarian, S., and Hoyos, L. R. (2012). “Recommendations for design, construction, and maintenance of bridge approach slabs.”, Texas Dept. of Transportation, Austin, TX.
Puppala, A. J., and Chittoori, B. S. (2012). “Transportation civil infrastructure settlement and heave distress: Challenges and solutions.” J. Zhejiang Univ.–Sci. A, 13(11), 850–857.
Puppala, A. J., Saride, S., and Williammee, R. (2012). “Sustainable reuse of limestone quarry fines and RAP in pavement base/subbase layers.” J. Mater. Civ. Eng., 418–429.
Saride, S., Puppala, A. J., Williammee, R., and Sirigiripet, S. K. (2010). “Use of lightweight ECS as a fill material to control approach embankment settlements.” J. Mater. Civ. Eng., 607–617.
Seo, J. (2003). “The bump at the end of the bridge: An investigation.” Ph.D. thesis, Texas A&M Univ., College Station, TX.
Stewart, C. F. (1985). “Highway structure approaches.”, FHWA, California Dept. of Transportation, Sacramento, CA.
Stoll, R. D., and Holm, T. A. (1985). “Expanded shale lightweight fill: Geotechnical properties.” J. Geotech. Eng., 1023–1027.
Tan, T. S., Inoue, T., and Lee, S. L. (1991). “Hyperbolic method for consolidation analysis.” J. Geotech. Eng., 1723–1737.
Valsangkar, A. J., and Holm, T. A. (1990). “Geotechnical properties of expanded shale lightweight aggregate.” ASTM Geotech. Test. J., 13(1), 10–15.
Valsangkar, A. J., and Holm, T. A. (1999). “Mechanical durability of expanded shale lightweight aggregate.” ASTM Geotech. Test. J., 22(4), 329–333.
Walkinshaw, J. L. (1978). “Survey of bridge movements in the western United States.” Transp. Res. Rec., 678, 6–12.
White, D., Mohamed, M., Sritharan, S., and Suleiman, M. (2007). “Underlying causes for settlement of bridge approach pavement systems.” J. Perform. Constr. Facil., 273–282.
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Published In
Journal of Performance of Constructed Facilities
Volume 31 • Issue 5 • October 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Dec 22, 2015
Accepted: Jan 13, 2017
Published online: Mar 16, 2017
Discussion open until: Aug 16, 2017
Published in print: Oct 1, 2017
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