GM  Vol.2 No.2 , April 2012
Effect of Compaction on Soil Hydraulic Parameters of Vegetative Landfill Covers
Abstract: Parameters of water retention and air capacity are important factors for the evaluation of soil material that will be used for vegetative covers or evapotranspiration (ET) covers of landfills. These values are often measured in the laboratory (usually on disturbed samples), but are also estimated from texture, organic matter content and dry bulk density. The standard basis for the estimation in Germany is the German Soil Classification Handbook (KA5). This estimation implicitly assumes that the data in the KA5 compiled from naturally developed soils are also valid for artificially compacted materials. In the present study, 25 materials were evaluated in the laboratory for the available water capacity, air capacity and permanent wilting point at 85%, 90% and 95% of Proctor density. The data were compared with parameter estimations from the KA5 and the program ROSETTA. Both estimation methods show significant deviations from the measured values; specifically, the change in the available water capacity in compressed samples is not estimated correctly. A possible explanation is a change in pore structure at different compaction levels of build in soil material in comparison with naturally developed soils of different bulk densities.
Cite this paper: R. Anlauf and P. Rehrmann, "Effect of Compaction on Soil Hydraulic Parameters of Vegetative Landfill Covers," Geomaterials, Vol. 2 No. 2, 2012, pp. 29-36. doi: 10.4236/gm.2012.22005.

[1]   T. A. Abfall, “Technical Instructions on Waste Manage- ment (in German),” Gemeinsames Ministerialblatt, Vol. 42, No. 8, 1991, pp. 139-214.

[2]   EC Directive, “Council Directive 1999/31/EC of 26 April 1999 on the Landfill of Waste,” Official Journal, L 182, 1999, pp. 1-19.

[3]   R. Bonaparte, B. A. Gross, D. E. Daniel, R. M. Koerner, and S. Dwyer, “Draft Technical Guidance for RCRA/ CERCLA Final Covers,” US Environmental Protection Agency, Office of Solid Waste and Emergency Response, Washington DC, 2002.

[4]   DepV, “Ordinance Concerning Dumps and Long-Term Storage Facilities,” 2009.

[5]   GDA, “E 2-31 Recultivation Layers (in German),” Rekul- tivierungsschichten, 2006.

[6]   ITRC, “Technical and Regulatory Guidance for Design, Instal-lation, and Monitoring of Alternative Final Landfill Covers,” Alternative Landfill Technologies, Interstate Tech- nology & Regulatory Council, Washington DC, 2003.

[7]   A. G. Boden, “German Soil Classification Handbook (in German),” 5th Edition, Hannover, 2005.

[8]   J. R. Archer and P. D. Smith, “The Relation between Bulk Density, Available Water Capacity, and Air Capac- ity of Soils,” Journal of Soil Science, Vol. 23, No. 4, 1972, pp. 475-480. doi:10.1111/j.1365-2389.1972.tb01678.x

[9]   S. Melchior, “Recultivation Layers (in German): Rekul- tivierungsschichten—Geltende Anforderungen, Stand der Technik und Praxiserfahrungen,” In: J. Gebert and E. M. Pfeiffer, Eds., Hamburger Bodenkundliche Arbeiten, Vol. 63, 2010, pp. 25-42.

[10]   M. G. Schaap, F. J. Leij and M. Th. van Genuchten, “Rosetta: A Computer Program for Estimating Soil Hy- draulic Parameters with Hierarchical Pedotransfer Func- tions,” Journal of Hydrology, Vol. 251, No. 3-4, 2001, pp. 163-176. doi:10.1016/S0022-1694(01)00466-8

[11]   United States Department of Agriculture, “Rosetta Mo- del,” 2011.

[12]   GDA, “Modelling the Water Balance of Landfill Capping Systems (in German),” 2003.

[13]   K. Berger and P. R. Schroeder, “The Hydrologic Evalua- tion of Landfill Performance (HELP) Model (German Version) HELP 3.80 D. CD,” Institute of Soil Science, Hamburg University, Hamburg, 2004.

[14]   U. Krahmer, V. Hennings, U. Müller and H. P. Schrey, “Determination of Soil Physical Characteristics as a Function of Soil Type, Compaction and Organic Matter Content (in German),” Journal of Plant Nutrition and Soil Science, Vol. 158, No. 4, 1995, pp. 323-331. doi:10.1002/jpln.19951580403

[15]   J. Simunek, M. Sejna, H. Saito, M. Sakai and M. Th. van Ge-nuchten, “The Hydrus-1D Software Package for Simu- lating the Movement of Water, Heat, and Multiple Solutes in Variably Saturated Media, Version 4.0, HYDRUS Software Series 3,” Department of Environmental Sci- ences, University of Cali-fornia Riverside, Riverside, 2008, p. 315.

[16]   DIN 18127, “Soil, Investigation and Testing—Proctor Test,” Beuth, Berlin/Cologne, 1997.

[17]   A. Klute, “Water Retention: Laboratory Methods,” In: A. Klute, Ed., Methods of Soil Analysis: Part I—Physical and Minero-logical Methods: Soil Science Society of Ame- rica Book Series No. 5, Soil Science Society of America, Madison, 1986, pp. 635-660.

[18]   DIN EN 13041, “Soil Improvers and Growing Media— Deter-mination of Physical Properties—Dry Bulk Density, Air Volume, Water Volume, Shrinkage Value and Total Pore Space,” Beuth, Berlin/Cologne, 2012.

[19]   DIN 11274, “Soil Quality—Determination of the Water Reten-tion Characteristics—Laboratory Methods,” Beuth, Ber-lin/Cologne, 2011.

[20]   D. Wallach, “Evaluating Crop Models,” In: D. Wallach, D. Makowski and J. W. Jones, Eds., Working with Dy- namic Crop Models, Elsevier, Amsterdam, 2006.

[21]   Soil Survey Division Staff, “Soil Survey Manual,” Soil Con-servation Service, US Department of Agriculture Handbook 18, 1993.

[22]   K. E. Saxton, W. J. Rawls, J. S. Romberger and R. I. Pa- pen-dick, “Estimating Generalized Soil Water Characteris- tics from Texture,” Soil Science Society of America Jour- nal, Vol. 50, No. 4, 1986, pp. 1031-1035. doi:10.2136/sssaj1986.03615995005000040039x

[23]   P. R. Schroeder, N. M. Aziz, C. M. Lloyd and P. A. Zappi, “The Hydrologic Evaluation of Landfill Performance (HELP) Model: User’s Guide for Version 3, EPA/600/ R-94/168a,” US Environmental Protection Agency Office of Research and De-velopment, Washington DC, 1994.

[24]   M. Acutis and M. Donatelli, “SOILPAR 2.00: Software to Es-timate Soil Hydrological Parameters and Functions,” European Journal of Agronomy, Vol. 18, No. 3-4, 2002, pp. 373-377. doi:10.1016/S1161-0301(02)00128-4

[25]   K. E. Saxton and W. J. Rawls, “Soil Water Characteristic Esti-mates by Texture and Organic Matter for Hydrologic Solutions,” Soil Science Society of America Journal, Vol. 70, No. 5, 2006, pp. 1569-1578. doi:10.2136/sssaj2005.0117

[26]   D. Dec, J. D?rner, O. Becker-Fazekas and R. Horn, “Ef- fect of Bulk Density on Hydraulic Properties of Homoge- nized and Structured Soils,” Journal of Soil Science and Plant Nutrition, Vol. 8, No. 1, 2008, pp. 1-13.

[27]   Th. Egloffstein, D. Sturm and H. Brackelmann, “Experi- ence in the Construction of ET Covers and Recultivation Layers (in German),” Expertengespr?ch zum Thema: Was- serhaushaltsschichten im Deponiebau, LUGV Branden- burg, Potsdam, 2009.

[28]   W. Konold, P. Wattendorf, O. Ehrmann, A. Bieberstein, H. Reith, G. B?necke and H. Schack-Kirchner, “Water Balance and Soil Development of Rehabilitation Layers (in German),” Institut für Landespflege, Albert-Ludwigs- Universit?t Freiburg, Freiburg im Breisgau, 2004.