Water Balance of an Earth Fill Built of Slightly Contaminated Organic Clay

Birle, Emanuel; Heyer, Dirk

doi:10.1061/9780784412121.354

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…The fill was constructed in autumn 2008. First results of the water balance of the fill were published at the fifth international conference on unsaturated soils 2010 in Barcelona [1] and at the GeoCongress 2012 [2]. Since then further measurements were taken and valuable information about the water balance could be gained.…”

Section: Introductionmentioning

confidence: 99%

Water balance of an earth fill built of organic clay

Birle

Heyer

2016

E3S Web Conf.

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Abstract. The paper presents investigations on the water balance of an earth fill built of organic clay in humid climate. As the organic soil used for the fill contains geogenetically elevated concentrations of arsenic, particular attention is paid on the seepage flow through the fill. The test fill is 5 m high, 30 m long and 25 m wide. The fill consists of the organic clay compacted at water contents wet and dry of Proctor Optimum covered by a drainage mat and a 60 cm thick top layer. For the determination of the water balance extensive measuring systems were installed. The seepage at the bottom measured so far was less than 2 % of the precipitation. The interflow in the drainage mat above the compacted organic clay was of similar magnitude. The estimated evapotranspiration reached approx. 84 % of the precipitation. According to these measurements the percolation is much lower than the percolation of many landfill covers in humid climates.

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Section: Introductionmentioning

confidence: 99%

Water balance of an earth fill built of organic clay

Birle

Heyer

2016

E3S Web Conf.

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“…Data of the water balance were collected since the installation in 2008. Results of the measurements were reported by Birle et al [1] and Birle and IOP Publishing doi:10.1088/1757-899X/1260/1/012018 2 Heyer [2] [3]. In the following the design of the fill and the measuring instrumentation is briefly described.…”

Section: Introductionmentioning

confidence: 95%

Evaluation of the performance of a drainage geocomposite in a simple cover system based on 10 year measurements

Birle¹,

Melsbach²,

Heyer³

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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In the course of the geotechnical investigations for a new runway at Munich Airport the hydro-mechanical behaviour of organogenic clays was studied. With the aim of an efficient use of materials the organogenic clay shall be used for noise and view barriers. As the organogenic clays have increased arsenic contents the percolation of such structures should be minimized. For the detailed investigation of the hydro-mechanical behaviour and for the determination of seepage quantities, a large scale, 5 m high, 30 m long and 25 m wide test fill was constructed. Due to the low permeability of the organogenic clays in compacted condition a cover design with a drainage mat and a top layer without an additional sealing layer was chosen. Measurements of the water balance were collected since the installation in 2008. The results show very low leachate quantities, although humid climatic conditions with average annual precipitation of approx. 745 mm were present. The low leachate rates can be mainly attributed to the capillary-breaking effect of the drainage geocomposite and the high water retention capacity of the topsoil. Based on the results the presented simple cover system can be considered an efficient and effective solution for minimizing infiltration water into core materials of embankments and noise barriers in road-way design.

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