Searched for: subject%3A%22peat%22
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van Veen, J. (author)
Where the top layer of clayey substance was thin and the underlying peat layer thick, the shrinkage of the latter had been such that the clay-filled gullies appeared as ridges of about ½ to 1 m high in the field. Farmers sometimes call these ridges ,,natural dykes". In some places they have dug up parts of these ancient depots of good clay and...
report 1942
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den Haan, E.J. (author)
The behaviour of peats and organic soils is usually approached with the concepts and methods developed for inorganic clays. However, important anomalies exist, and these are given emphasis in the present overview of the mechanical behaviour of these soils. Subject headings include index properties and general characteristics, classification...
report 1977
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Van Gilst, T.B. (author)
This report is a study on the possibilities of practising irrigation & drainage at a large scale in tidal lowlands with acid sulphate soils in the humid tropics. The first chapters concern lowlands and their development in Indonesia. It appears that many of these lands become unfertile shortly after reclamation due to oxidation of pyrite,...
master thesis 1992
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Hal, V.V. (author)
Vietnam is an agricultural country where rice is the main crop cultivated in the Red river delta in the North and in the Mekong delta in the South. Both deltas refer to lowland. However, the degree of development is clearly different between the two deltas. In the Red river delta, the dike system as well as the canal networks have been...
report 1996
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Van, M.A. (author), Molendijk, W.O. (author)
This technical document describes the behaviour of peat and gives an overview of the design methodes for peat. Subject headings include general characteristics and classification issues, prototypes of peat problems, design and calculation methods, special construction techniques, parameter determination safety aspects and monitoring.
report 1997
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Zwanenburg, C. (author)
Soft soil is often described as an anisotropic heterogeneous material. Standard soil investigation mainly involves vertically retrieved samples. Information on the parameters working in the horizontal direction remains scarce. Principally each soil property like permeability, stiffness or strength might show anisotropic behaviour. This thesis...
doctoral thesis 2005
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Zainorabidin, A. (author), Wijeyesekera, D.C. (author), Masirin, M.I. (author)
Peat soils occur in many countries and are described differently at times from both a qualitative and quantitative perspective. Peats are formed naturally through the decomposition of plant and animal matter under anaerobic conditions that take place over long periods of time. While the estimated and reported extent of Malaysian peat was...
report 2007
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Zainorabidin, A. (author), Wijeyesekera, D.C. (author)
Peat soil is encountered in many areas and generally originates from plant/animal remains and is considered partly as decomposed biomass. Due to this composition, the structure of this soil is very different when compared with inorganic soils like clay, sand and gravel. Peat has a high compressibility, low shear strength, high moisture content...
report 2008
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Shirasagi, S. (author)
Peat is sediment consisting of incompletely decomposed organic matter deposited in swamp and marsh. It has served for a long time as benefits for human beings. Meanwhile, it has posed huge challenges to geotechnical engineers because of its unique characteristics such as anisotropy, low stiffness, high compressibility and strong creep...
master thesis 2009
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Nterekas, D. (author)
This research investigates the Wilnis dike failure that occurred in the dry summer of 2003. It is believed that drought played an important role in decreasing the stability of the dike, finally leading to failure. In the reported MSc project the situation during drought is simulated with the help of finite element method programs Plaxis and...
master thesis 2009
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Kroon-van Loon, P.S. (author)
About 30% of the increased greenhouse gas (GHG) emissions of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) are related to land use changes and agricultural activities. In order to select effective measures, knowledge is required about GHG emissions from these ecosystems and how these emissions are influenced by management and...
doctoral thesis 2010
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Grognet, M.F. (author)
More than the half of the Netherlands is under the high level of sea and rivers. Therefore, evaluating the safety of dykes is primordial. A specific interest is given to peat dykes safety which suffer of a lack of knowledge which manifested recently by some peat dykes failures (Van Baars 2005). The behaviour of peat is also of interest in others...
master thesis 2011
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Ponziani, M. (author)
doctoral thesis 2012
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Zwanenburg, C. (author)
Stability assessment of existing dikes build on soft soil generates questions on the available stability calculation techniques and material models. Especially peat behaviour is not easily captured by standard design methods. This has led to disapproval, based on calculations, of dikes that have been in operation for several hundreds of years....
conference paper 2012
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Papadaki, E. (author)
This study being part of the Weesp Bloemendalerpolder Project, is concentrated on the compression of a peat layer under the weight of a trial sand embankment; examined under two scopes, the laboratory K0-CRS test and the field settlements. Their interconnection is also evaluated. Peat being an organic material with many distinctive...
master thesis 2013
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Houkes, C.B. (author)
Organic soft soils pose technical challenges in construction industry due to their extraordinary compressibility and deformability, which is an issue of particular relevance in the densely populated Netherlands, of which more than half of the land surface is covered by such soft soils. Uncertainty and variability in settlement predictions for...
master thesis 2016
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Noorbergen, Lars J. (author), Abels, H.A. (author), Hilgen, Frederik J. (author), Robson, Brittany E. (author), de Jong, Edwin (author), Dekkers, Mark J. (author), Krijgsman, Wout (author), Smit, Jan (author), Collinson, Margaret E. (author), Kuiper, Klaudia F. (author)
Fluvial systems in which peat formation occurs are typified by autogenic processes such as river meandering, crevasse splaying and channel avulsion. Nevertheless, autogenic processes cannot satisfactorily explain the repetitive nature and lateral continuity of many coal seams (compacted peats). The fluvial lower Palaeocene Tullock Member of...
journal article 2017
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Chatzis, Konstantinos (author)
The term peat is commonly used to describe organic soils, composed of fragmented plant remains and fibers. Despite the extensive research on the behaviour of peat during the last 50 years, the vast majority of the attention was devoted to the volumetric behaviour. Only few attempts are reported to model the deviatoric behavior of peat, which is...
master thesis 2018
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Muraro, S. (author)
The geotechnical description of peats represents one of the main challenges in the Netherlands to assure the required safety standard and performance of the flood defence infrastructure. Almost a third of the country is situated below the sea and the rivers level with about 60% to 70% of the population and economic assets concentrated in low...
doctoral thesis 2019
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Dicker, Sjors (author)
Peat is formed by biochemical processes and the accumulation of the soil depends on the aerobic and anaerobic conditions. The soil covers five to eight percent of the land surface of the earth. For this thesis a peat coming from a site called Markermeeer, which is a lake between the provinces Noord-Holland and Flevoland in the Netherlands, is...
master thesis 2019
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