Full TGIF Record # 118476
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Publication Type:
i
Report
Author(s):Wolf, Bettina; Matthies, Dietmar; Magel, Gabriele; Fehr, Thomas
Author Affiliation:Wolf and Matthies: Lehrstuhl für Forstliche Arbeitswissenschaft und Angewandte Informatik, Technische Universität München; Magel and Fehr: Sektion Mineralogie, Department für Geo- und Umweltwissenschaften, Ludwig-Maximilians-Universität, München
Title:Eignung von Quarzsanden als Gerüstbaustoff im Sportplatzbau: Teil II: Ursachen von Verfestigung und mangelnder Drainage in Rasentragschichten
Translated Title:[Suitability of quartz sands as subsoil in the construction of sports fields: Part 2: Causes of compaction and poor drainage in root zone mixtures]
Article Series:Eignung von Quarzsanden als Gerüstbaustoff im Sportplatzbau
Translated Series Title:[Suitability of quartz sands as subsoil in the construction of sports fields]
Source:Rasen-Turf-Gazon. Vol. 35, No. 3, September 2004, p. 46-52.
Publishing Information:Bonn, Germany: Hortus Verlag
# of Pages:7
Keywords:TIC Keywords: Athletic fields; Sports turf construction; Root zone mixture; Sand particle size; Sand shape; Physical properties of soil; Soil binding; Compaction; Electron microscopy; X-ray diffraction; Physical soil analysis; Soil testing; Drainage; Irrigation
Abstract/Contents:X-ray diffraction and electron microscopy were used to examine various sand-based root zone mixtures, in order to determine causes for soil compaction and poor drainage. The hypothesis was that fine-grained sand particles are collected by water and "concentrated and captured in the area of grain contacts. This hypothesis could be verified." It was possible, with the help of the Hagen-Poiseuille law and the observed reduction of pore cross-section, to explain the 50% decrease in soil permeability ("kf-Wert") after repeating irrigation. "For the first time the development of secondary 'cement bridges' that partly even divided the cross sections of the pores could be explained and understood because of their special concave surface." A further attempt was made to demonstrate the existence of a binding agent "responsible for the high mechanical stability of the test-pieces. The high density of aluminum in the solution gave [initial] evidence of separation of [aluminum hydroxides] which acted as a sort of binding agent between sand grains and carried away fine [grains]." This could be confirmed neither for aluminum nor other cations. "The strong solidity [is mainly] due to adhesive/cohesive powers. This was verified by a simple water test when the baked material crumbled away spontaneously."
Language:German
References:1
See Also:See also Part 1 "Eignung von Quarzsanden als Gerüstbaustoff im Sportplatzbau - Teil I: Bodenphysikalische, -mechanische und -chemische Untersuchungen" Rasen, Turf, Gazon, 25(1) March 2004 p. 4-6 R=118157 R=118157

See also part 3 "Eignung von Quarzsanden als Gerüstbaustoff im Sportplatzbau: Teil III: Empfehlungen" Rasen Turf Gazon, 35(4) December 2004, p. 60-63 R=79752 R=79752
Note:Abstract appears in German, English, and French
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Wolf, B., D. Matthies, G. Magel, and T. Fehr. 2004. Eignung von Quarzsanden als Gerüstbaustoff im Sportplatzbau: Teil II: Ursachen von Verfestigung und mangelnder Drainage in Rasentragschichten. (In German) Rasen Turf Gazon. 35(3):p. 46-52.
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